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301 Area Code

About Area Code 301

State: Maryland
Major City: Germantown
Timezone: Eastern (2:17pm)
Short URL: allareacodes.com/301
Download: Download this data

Area Code 301 Map

  • Aspen Hill, MD
  • Bethesda, MD
  • Bowie, MD
  • Chillum, MD
  • Clinton, MD
  • College Park, MD
  • Cumberland, MD
  • Fairland, MD
  • Fort Washington, MD
  • Frederick, MD
  • Gaithersburg, MD
  • Germantown, MD
  • Greenbelt, MD
  • Hagerstown, MD
  • Landover, MD
  • Montgomery Village, MD
  • North Bethesda, MD
  • North Laurel, MD
  • North Potomac, MD
  • Olney, MD
  • Oxon Hill-glassmanor, MD
  • Potomac, MD
  • Rockville, MD
  • Silver Spring, MD
  • South Laurel, MD
  • St. Charles, MD
  • Suitland, MD
  • Waldorf, MD
  • Wheaton-glenmont, MD
  • White Oak, MD

More About Area Code 301

Area code 301 is one of the original 86 area codes created by AT&T and the Bell System in 1947. It originally served the entire state of Maryland. In 1997, area code 240 was created as an overlay to area code 301. Currently, the largest city it serves is Germantown, MD, and it overlaps coverage areas with area codes 227 and 240.

Overview of Active Prefixes

Assigned to Carrier

Usage

Carriers

Active Phone Number Prefixes

Prefix
Usage
Primary City
Carrier
Introduced
(301) 200-
Landline
Indian Head
Bandwidth.com Clec
Introduced 02/24/2011
(301) 202-
Wireless
Chevy Chase
New Cingular Wireless PCS - DC
Introduced 12/19/2008
(301) 203-
Landline
Fort Washington
Verizon Maryland
Introduced 02/04/1994
(301) 204-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 04/15/1996
(301) 205-
Landline
Edgewater
Verizon Maryland
Introduced 07/06/1997
(301) 206-
Landline
Laurel
Verizon Maryland
Introduced 02/04/1994
(301) 207-
Wireless
Greenbelt
Usa Mobility Wireless
Introduced 02/04/1994
(301) 208-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 209-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 210-
Landline
Beltsville
Verizon Maryland
Introduced 02/04/1994
(301) 212-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 213-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 07/06/1997
(301) 214-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 215-
Landline
Chevy Chase
Verizon Maryland
Introduced 02/04/1994
(301) 216-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 217-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 218-
Landline
Bowie
Verizon Maryland
Introduced 01/10/1996
(301) 219-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 07/04/1995
(301) 220-
Landline
Greenbelt
Verizon Maryland
Introduced 02/04/1994
(301) 221-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 09/11/1994
(301) 222-
Landline
Bethesda
Cavalier Telephone Mid-atlantic
Introduced 10/11/1997
(301) 223-
Landline
Williamsport
Verizon Maryland
Introduced 02/04/1994
(301) 224-
Wireless
Chevy Chase
Usa Mobility Wireless
Introduced 04/15/1996
(301) 225-
Landline
Glenn Dale
Teleport Communications America - DC
Introduced 05/21/2009
(301) 226-
Landline
Hyattsville
Verizon Maryland
Introduced 07/01/1996
(301) 227-
Landline
Glen Echo
Verizon Maryland
Introduced 02/04/1994
(301) 228-
Landline
Frederick
Verizon Maryland
Introduced 07/06/1997
(301) 229-
Landline
Glen Echo
Verizon Maryland
Introduced 02/04/1994
(301) 230-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 231-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 232-
Landline
Sandy Spring
Mci Worldcom Communications
Introduced 01/11/1997
(301) 233-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 04/01/1997
(301) 234-
Landline
Fort Washington
Verizon Maryland
Introduced 01/11/1997
(301) 235-
Landline
Clinton
Mcimetro Access Transmission Services LLC
Introduced 01/11/1997
(301) 236-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 237-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 04/01/1997
(301) 238-
Landline
Temple Hills
Verizon Maryland
Introduced 02/04/1994
(301) 239-
Wireless
Hyattsville
Verizon Maryland
Introduced 02/11/1995
(301) 240-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 241-
Landline
Highfield
Verizon Maryland
Introduced 01/10/1996
(301) 242-
Landline
Brandywine
Mcimetro Access Transmission Services LLC
Introduced 01/11/1997
(301) 243-
Landline
Bethesda
Verizon Maryland
Introduced 07/20/2006
(301) 244-
Landline
Rockville
Telcove Operations
Introduced 01/11/1997
(301) 245-
Landline
Bittinger
Verizon Maryland
Introduced 02/04/1994
(301) 246-
Landline
Nanjemoy
Verizon Maryland
Introduced 02/04/1994
(301) 247-
Wireless
Leonardtown
New Cingular Wireless PCS - DC
Introduced 01/10/1996
(301) 248-
Landline
Fort Washington
Verizon Maryland
Introduced 02/04/1994
(301) 249-
Landline
Bowie
Verizon Maryland
Introduced 02/04/1994
(301) 250-
Landline
Rockville
Mci Worldcom Communications
Introduced 01/11/1997
(301) 251-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 252-
Wireless
Gaithersburg
Sprint Spectrum L.p.
Introduced 01/10/1996
(301) 253-
Landline
Damascus
Verizon Maryland
Introduced 02/04/1994
(301) 254-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 01/10/1996
(301) 255-
Landline
Rockville
Verizon Maryland
Introduced 01/11/1997
(301) 256-
Landline
Laurel
Mci Worldcom Communications
Introduced 01/11/1997
(301) 257-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 10/11/1997
(301) 258-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 259-
Landline
Issue
Verizon Maryland
Introduced 02/04/1994
(301) 260-
Landline
Ashton
Verizon Maryland
Introduced 07/06/1997
(301) 261-
Landline
Glenn Dale
Verizon Maryland
Introduced 02/04/1994
(301) 262-
Landline
Bowie
Verizon Maryland
Introduced 02/04/1994
(301) 263-
Landline
Glen Echo
Verizon Maryland
Introduced 04/01/1997
(301) 264-
Landline
Mount Savage
Verizon Maryland
Introduced 02/04/1994
(301) 265-
Landline
Fort Washington
Verizon Maryland
Introduced 01/11/1997
(301) 266-
Wireless
Waldorf
New Cingular Wireless PCS - DC
Introduced 01/11/1997
(301) 267-
Wireless
Greenbelt
Sprint Spectrum L.p.
Introduced 10/04/2011
(301) 268-
Wireless
Cumberland
Uscoc Of Cumberland DBA United States Cel Md
Introduced 07/06/1997
(301) 270-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 271-
Landline
Thurmont
Verizon Maryland
Introduced 02/04/1994
(301) 272-
Landline
Rockville
Mci Worldcom Communications
Introduced 01/11/1997
(301) 273-
Landline
Silver Spring
Mci Worldcom Communications
Introduced 01/11/1997
(301) 274-
Landline
Hughesville
Verizon Maryland
Introduced 02/04/1994
(301) 275-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 02/11/1995
(301) 276-
Landline
Hyattsville
Mci Worldcom Communications
Introduced 01/11/1997
(301) 277-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 278-
Landline
Mount Rainier
Mci Worldcom Communications
Introduced 01/11/1997
(301) 279-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 280-
Landline
Chevy Chase
Verizon Maryland
Introduced 10/11/1997
(301) 281-
Landline
Oxon Hill
Mci Worldcom Communications
Introduced 01/11/1997
(301) 282-
Landline
Silver Spring
Verizon Maryland
Introduced 07/04/1995
(301) 283-
Landline
Bryans Road
Verizon Maryland
Introduced 02/04/1994
(301) 284-
Landline
Rockville
Mci Worldcom Communications
Introduced 01/11/1997
(301) 285-
Wireless
Silver Spring
Verizon Maryland
Introduced 07/04/1995
(301) 286-
Landline
Greenbelt
Verizon Maryland
Introduced 02/04/1994
(301) 287-
Landline
Rockville
Mci Worldcom Communications
Introduced 01/11/1997
(301) 288-
Landline
Rockville
Mci Worldcom Communications
Introduced 01/10/1996
(301) 289-
Landline
College Park
Mci Worldcom Communications
Introduced 01/11/1997
(301) 290-
Landline
Mechanicsville
Verizon Maryland
Introduced 07/06/1997
(301) 291-
Landline
Mount Rainier
Mci Worldcom Communications
Introduced 01/11/1997
(301) 292-
Landline
Fort Washington
Verizon Maryland
Introduced 02/04/1994
(301) 293-
Landline
Myersville
Verizon Maryland
Introduced 02/04/1994
(301) 294-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 295-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 296-
Landline
Rockville
Mci Worldcom Communications
Introduced 07/04/1995
(301) 297-
Landline
Fort Washington
Verizon Maryland
Introduced 02/04/1994
(301) 298-
Landline
Upper Marlboro
Mcimetro Access Transmission Services LLC
Introduced 04/01/1997
(301) 299-
Landline
Bethesda
Verizon Maryland
Introduced 02/04/1994
(301) 300-
Wireless
Bethesda
Cellco Partnership DBA Verizon Wireless
Introduced 03/30/2007
(301) 302-
Landline
Hagerstown
Sprint Spectrum L.p.
Introduced 10/05/2004
(301) 303-
Wireless
Greenbelt
Usa Mobility Wireless
Introduced 02/04/1994
(301) 304-
Landline
Frederick
Comcast Phone Of Northern Maryland
Introduced 03/06/2007
(301) 305-
Wireless
Frederick
Sprint Spectrum L.p.
Introduced 04/15/1996
(301) 306-
Landline
Lanham
Verizon Maryland
Introduced 02/04/1994
(301) 307-
Landline
College Park
Verizon Maryland
Introduced 07/01/1996
(301) 308-
Wireless
Greenbelt
Usa Mobility Wireless
Introduced 02/04/1994
(301) 309-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 310-
Landline
Columbia
Verizon Maryland
Introduced 07/01/1996
(301) 312-
Wireless
Oxon Hill
New Cingular Wireless PCS - DC
Introduced 10/11/1997
(301) 313-
Landline
Greenbelt
Verizon Maryland
Introduced 10/11/1997
(301) 314-
Landline
Hyattsville
Paetec Communications
Introduced 02/04/1994
(301) 315-
Landline
Rockville
Verizon Maryland
Introduced 07/01/1996
(301) 316-
Landline
Temple Hills
Verizon Maryland
Introduced 07/06/1997
(301) 317-
Landline
Laurel
Verizon Maryland
Introduced 02/04/1994
(301) 318-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 02/04/1994
(301) 319-
Landline
Rockville
Verizon Maryland
Introduced 07/01/1996
(301) 320-
Landline
Glen Echo
Verizon Maryland
Introduced 02/04/1994
(301) 321-
Landline
Rockville
Telcove Operations
Introduced 07/06/1997
(301) 322-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 323-
Landline
Laurel
Tw Telecom Of Maryland LLC
Introduced 07/06/1997
(301) 324-
Landline
Capitol Heights
Verizon Maryland
Introduced 07/04/1995
(301) 325-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 07/04/1995
(301) 326-
Wireless
Silver Spring
Omnipoint Communications Cap Operations
Introduced 10/11/1997
(301) 327-
Landline
Upper Marlboro
Comcast Phone Of Northern Maryland
Introduced 03/09/2006
(301) 328-
Landline
Silver Spring
Comcast Phone Of Northern Maryland
Introduced 06/21/2006
(301) 329-
Wireless
Greenbelt
Cavalier Telephone Mid-atlantic
Introduced 09/20/2011
(301) 330-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 331-
Wireless
Hagerstown
New Cingular Wireless PCS - DC
Introduced 02/04/1994
(301) 332-
Wireless
Silver Spring
New Cingular Wireless PCS - DC
Introduced 10/15/1996
(301) 333-
Landline
Capitol Heights
Verizon Maryland
Introduced 01/11/1997
(301) 334-
Landline
Oakland
Verizon Maryland
Introduced 02/04/1994
(301) 335-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 09/11/1994
(301) 336-
Landline
Capitol Heights
Verizon Maryland
Introduced 02/04/1994
(301) 337-
Landline
Gaithersburg
Mci Worldcom Communications
Introduced 07/04/1995
(301) 338-
Landline
Cumberland
Idt America Corp
Introduced 01/31/2006
(301) 339-
Landline
Rockville
Cavalier Telephone Mid-atlantic
Introduced 10/11/1997
(301) 340-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 341-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 342-
Landline
Patuxent River
Verizon Maryland
Introduced 01/10/1996
(301) 343-
Wireless
Capitol Heights
Sprint Spectrum L.p.
Introduced 02/11/1995
(301) 344-
Landline
Greenbelt
Verizon Maryland
Introduced 02/04/1994
(301) 345-
Landline
Greenbelt
Verizon Maryland
Introduced 02/04/1994
(301) 346-
Wireless
Silver Spring
New Cingular Wireless PCS - DC
Introduced 10/11/1997
(301) 347-
Landline
Chevy Chase
Verizon Maryland
Introduced 10/15/1996
(301) 348-
Landline
Kensington
Mci Worldcom Communications
Introduced 07/04/1995
(301) 349-
Landline
Poolesville
Verizon Maryland
Introduced 02/04/1994
(301) 350-
Landline
Capitol Heights
Verizon Maryland
Introduced 02/04/1994
(301) 351-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 07/04/1995
(301) 352-
Landline
Bowie
Verizon Maryland
Introduced 09/11/1994
(301) 353-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 354-
Landline
Rockville
Teleport Communications America - DC
Introduced 01/10/1996
(301) 355-
Landline
Gaithersburg
Verizon Maryland
Introduced 12/08/2005
(301) 356-
Landline
Laurel
Vdl DBA Global Telecom Brokers
Introduced 08/17/2004
(301) 357-
Wireless
Mount Rainier
Cellco Partnership DBA Verizon Wireless
Introduced 10/12/2006
(301) 358-
Landline
Upper Marlboro
Level 3 Communications
Introduced 10/11/1997
(301) 359-
Landline
Westernport
Verizon Maryland
Introduced 01/10/1996
(301) 360-
Landline
Frederick
Verizon Maryland
Introduced 01/25/1998
(301) 361-
Landline
Laurel
Tw Telecom Of Maryland LLC
Introduced 10/11/1997
(301) 362-
Landline
Laurel
Verizon Maryland
Introduced 10/11/1997
(301) 363-
Landline
Damascus
Level 3 Communications
Introduced 08/16/2006
(301) 364-
Landline
Hyattsville
Mci Worldcom Communications
Introduced 07/04/1995
(301) 365-
Landline
Bethesda
Verizon Maryland
Introduced 02/04/1994
(301) 366-
Wireless
Gaithersburg
Sprint Spectrum L.p.
Introduced 10/11/1997
(301) 367-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/11/1995
(301) 368-
Landline
Damascus
Verizon Maryland
Introduced 01/25/1998
(301) 369-
Landline
Laurel
Verizon Maryland
Introduced 02/04/1994
(301) 370-
Wireless
Gaithersburg
Sprint Spectrum L.p.
Introduced 05/18/1998
(301) 371-
Landline
Middletown
Verizon Maryland
Introduced 02/04/1994
(301) 372-
Landline
Brandywine
Verizon Maryland
Introduced 02/04/1994
(301) 373-
Landline
Hollywood
Verizon Maryland
Introduced 02/04/1994
(301) 374-
Landline
Waldorf
Verizon Maryland
Introduced 02/11/1995
(301) 375-
Landline
Bryans Road
Verizon Maryland
Introduced 02/04/1994
(301) 376-
Wireless
Laurel
Verizon Maryland
Introduced 04/01/1997
(301) 377-
Landline
Laurel
Comcast Phone Of Northern Maryland
Introduced 10/11/1997
(301) 378-
Landline
Frederick
Comcast Phone Of Northern Maryland
Introduced 02/20/2007
(301) 379-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 01/25/1998
(301) 380-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 382-
Wireless
Rockville
Verizon Maryland
Introduced 10/15/1996
(301) 383-
Landline
Glenn Dale
Comcast Phone Of Northern Maryland
Introduced 10/11/1997
(301) 384-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 385-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 04/01/1997
(301) 386-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 387-
Landline
Swanton
Verizon Maryland
Introduced 02/04/1994
(301) 388-
Landline
Silver Spring
Verizon Maryland
Introduced 10/11/1997
(301) 389-
Landline
Laurel
Tw Telecom Of Maryland LLC
Introduced 01/25/1998
(301) 390-
Landline
Bowie
Verizon Maryland
Introduced 02/04/1994
(301) 391-
Landline
Damascus
Verizon Maryland
Introduced 02/11/1995
(301) 392-
Landline
La Plata
Verizon Maryland
Introduced 07/06/1997
(301) 393-
Landline
Hagerstown
Verizon Maryland
Introduced 01/25/1998
(301) 394-
Landline
Beltsville
Verizon Maryland
Introduced 02/04/1994
(301) 395-
Wireless
Laurel
Cellco Partnership DBA Verizon Wireless
Introduced 08/17/2004
(301) 396-
Landline
Waldorf
Verizon Maryland
Introduced 01/25/1998
(301) 397-
Wireless
Greenbelt
Verizon Maryland
Introduced 02/11/1995
(301) 398-
Landline
Rockville
Verizon Maryland
Introduced 10/09/2003
(301) 399-
Wireless
Waldorf
Sprint Spectrum L.p.
Introduced 01/25/1998
(301) 400-
Landline
Rockville
Verizon Maryland
Introduced 03/29/2010
(301) 401-
Wireless
Frederick
New Cingular Wireless PCS - DC
Introduced 02/04/1994
(301) 402-
Landline
Bethesda
Verizon Maryland
Introduced 02/04/1994
(301) 403-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 404-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 04/15/1996
(301) 405-
Landline
Hyattsville
Paetec Communications
Introduced 02/04/1994
(301) 406-
Wireless
Chevy Chase
Usa Mobility Wireless
Introduced 02/04/1994
(301) 407-
Landline
Poolesville
Verizon Maryland
Introduced 07/01/1996
(301) 408-
Landline
Hyattsville
Verizon Maryland
Introduced 07/01/1996
(301) 409-
Wireless
Greenbelt
Usa Mobility Wireless
Introduced 02/04/1994
(301) 412-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 02/04/1994
(301) 413-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 414-
Landline
Damascus
Verizon Maryland
Introduced 02/04/1994
(301) 415-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 416-
Landline
Williamsport
Verizon Maryland
Introduced 02/04/1994
(301) 417-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 418-
Landline
Frederick
Verizon Maryland
Introduced 11/20/2002
(301) 419-
Landline
Beltsville
Verizon Maryland
Introduced 02/04/1994
(301) 420-
Landline
Suitland
Verizon Maryland
Introduced 02/04/1994
(301) 421-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 422-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 423-
Landline
Temple Hills
Verizon Maryland
Introduced 02/04/1994
(301) 424-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 425-
Wireless
Beltsville
Verizon Maryland
Introduced 09/11/1994
(301) 426-
Wireless
Beltsville
Verizon Maryland
Introduced 04/15/1996
(301) 427-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 428-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 429-
Landline
Lanham
Verizon Maryland
Introduced 01/11/1997
(301) 430-
Landline
Bowie
Verizon Maryland
Introduced 10/11/1997
(301) 431-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 432-
Landline
Keedysville
Verizon Maryland
Introduced 02/04/1994
(301) 433-
Landline
Fort Washington
Verizon Maryland
Introduced 01/11/1997
(301) 434-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 435-
Landline
Bethesda
Verizon Maryland
Introduced 07/04/1995
(301) 436-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 437-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 08/14/1998
(301) 438-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 439-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 440-
Wireless
Capitol Heights
Sprint Spectrum L.p.
Introduced 05/18/1998
(301) 441-
Landline
Greenbelt
Verizon Maryland
Introduced 02/04/1994
(301) 442-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 01/25/1998
(301) 443-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 444-
Landline
Gaithersburg
Verizon Maryland
Introduced 01/25/1998
(301) 445-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 446-
Landline
Greenbelt
Verizon Maryland
Introduced 08/14/1998
(301) 447-
Landline
Emmitsburg
Verizon Maryland
Introduced 02/04/1994
(301) 448-
Landline
Silver Spring
Comcast Phone Of Northern Maryland
Introduced 08/20/2000
(301) 449-
Landline
Fort Washington
Verizon Maryland
Introduced 02/04/1994
(301) 451-
Landline
Bethesda
Verizon Maryland
Introduced 05/10/1999
(301) 452-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/11/1995
(301) 453-
Landline
Kitzmiller
Verizon Maryland
Introduced 02/04/1994
(301) 454-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 455-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 01/25/1998
(301) 456-
Landline
Mount Rainier
Comcast Phone Of Northern Maryland
Introduced 04/01/1997
(301) 457-
Landline
Silver Spring
Verizon Maryland
Introduced 02/11/1995
(301) 458-
Landline
Mount Rainier
Teleport Communications America - DC
Introduced 07/04/1995
(301) 459-
Landline
Lanham
Verizon Maryland
Introduced 02/04/1994
(301) 460-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 461-
Wireless
Rockville
Cellco Partnership DBA Verizon Wireless
Introduced 05/18/1998
(301) 462-
Wireless
Myersville
Sprint Spectrum L.p.
Introduced 10/11/1997
(301) 463-
Landline
Lonaconing
Verizon Maryland
Introduced 02/04/1994
(301) 464-
Landline
Bowie
Verizon Maryland
Introduced 02/04/1994
(301) 465-
Wireless
Myersville
Sprint Spectrum L.p.
Introduced 01/11/1997
(301) 466-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 07/04/1995
(301) 467-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 01/10/1996
(301) 468-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 469-
Landline
Bethesda
Verizon Maryland
Introduced 02/04/1994
(301) 470-
Landline
Laurel
Verizon Maryland
Introduced 02/04/1994
(301) 471-
Wireless
Frederick
Cellco Partnership DBA Verizon Wireless
Introduced 04/15/1996
(301) 472-
Landline
Mechanicsville
Verizon Maryland
Introduced 09/11/1994
(301) 473-
Landline
Frederick
Verizon Maryland
Introduced 02/04/1994
(301) 474-
Landline
Greenbelt
Verizon Maryland
Introduced 02/04/1994
(301) 475-
Landline
Leonardtown
Verizon Maryland
Introduced 02/04/1994
(301) 476-
Landline
Silver Spring
Verizon Maryland
Introduced 09/11/1994
(301) 477-
Landline
College Park
Comcast Phone Of Northern Maryland
Introduced 10/11/1997
(301) 478-
Landline
Oldtown
Verizon Maryland
Introduced 02/04/1994
(301) 479-
Landline
College Park
Mci Worldcom Communications
Introduced 07/04/1995
(301) 480-
Landline
Bethesda
Verizon Maryland
Introduced 02/04/1994
(301) 481-
Wireless
Leonardtown
Cellco Partnership DBA Verizon Wireless
Introduced 04/15/1996
(301) 482-
Landline
Damascus
Verizon Maryland
Introduced 04/15/1996
(301) 483-
Landline
Laurel
Verizon Maryland
Introduced 04/15/1996
(301) 484-
Landline
Oxon Hill
Comcast Phone Of Northern Maryland
Introduced 04/01/1997
(301) 485-
Landline
Oxon Hill
Comcast Phone Of Northern Maryland
Introduced 04/01/1997
(301) 486-
Landline
Greenbelt
Verizon Maryland
Introduced 01/11/1997
(301) 487-
Landline
Myersville
Verizon Maryland
Introduced 02/04/1994
(301) 488-
Wireless
Greenbelt
Verizon Maryland
Introduced 01/25/1998
(301) 489-
Landline
Greenbelt
Verizon Maryland
Introduced 09/11/1994
(301) 490-
Landline
Laurel
Verizon Maryland
Introduced 02/04/1994
(301) 491-
Wireless
Hagerstown
Uscoc Of Cumberland DBA United States Cel Md
Introduced 02/04/1994
(301) 492-
Landline
Chevy Chase
Verizon Maryland
Introduced 02/04/1994
(301) 493-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 494-
Landline
Upper Marlboro
Verizon Maryland
Introduced 10/15/1996
(301) 495-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 496-
Landline
Bethesda
Verizon Maryland
Introduced 02/04/1994
(301) 497-
Landline
Laurel
Verizon Maryland
Introduced 02/04/1994
(301) 498-
Landline
Laurel
Verizon Maryland
Introduced 02/04/1994
(301) 499-
Landline
Capitol Heights
Verizon Maryland
Introduced 02/04/1994
(301) 500-
Landline
Chevy Chase
Xo Maryland
Introduced 09/01/2010
(301) 501-
Wireless
Oakland
New Cingular Wireless PCS - DC
Introduced 02/04/1994
(301) 502-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/04/1994
(301) 503-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 02/04/1994
(301) 504-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 505-
Landline
Temple Hills
Verizon Maryland
Introduced 02/04/1994
(301) 506-
Wireless
Greenbelt
Usa Mobility Wireless
Introduced 02/04/1994
(301) 507-
Landline
Greenbelt
Verizon Maryland
Introduced 02/04/1994
(301) 508-
Wireless
Myersville
New Cingular Wireless PCS - DC
Introduced 05/18/1998
(301) 509-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/04/1994
(301) 510-
Wireless
Greenbelt
Usa Mobility Wireless
Introduced 02/04/1994
(301) 512-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 01/10/1996
(301) 513-
Landline
Greenbelt
Verizon Maryland
Introduced 02/04/1994
(301) 514-
Wireless
Frederick
Cellco Partnership DBA Verizon Wireless
Introduced 07/01/1996
(301) 515-
Landline
Gaithersburg
Verizon Maryland
Introduced 01/10/1996
(301) 516-
Landline
Suitland
Verizon Maryland
Introduced 04/01/1997
(301) 517-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 518-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/04/1994
(301) 519-
Landline
Gaithersburg
Verizon Maryland
Introduced 04/01/1997
(301) 520-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/04/1994
(301) 521-
Landline
Oxon Hill
Verizon Maryland
Introduced 04/01/1997
(301) 522-
Wireless
Rockville
Verizon Maryland
Introduced 04/01/1997
(301) 523-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 10/15/1996
(301) 524-
Wireless
Frederick
Sprint Spectrum L.p.
Introduced 08/14/1998
(301) 525-
Landline
Gaithersburg
Quantum Telecommunications
Introduced 10/16/2003
(301) 526-
Wireless
Silver Spring
New Cingular Wireless PCS - DC
Introduced 08/14/1998
(301) 527-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/11/1995
(301) 528-
Landline
Gaithersburg
Verizon Maryland
Introduced 08/14/1998
(301) 529-
Wireless
Rockville
New Cingular Wireless PCS - DC
Introduced 08/14/1998
(301) 530-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 531-
Landline
Hyattsville
Starpower Communications
Introduced 11/20/1998
(301) 533-
Landline
Oakland
Verizon Maryland
Introduced 08/14/1998
(301) 534-
Landline
Indian Head
Ymax Communications Corp.
Introduced 11/15/2006
(301) 535-
Wireless
Waldorf
New Cingular Wireless PCS - DC
Introduced 08/14/1998
(301) 536-
Wireless
Leonardtown
Sprint Spectrum L.p.
Introduced 11/20/1998
(301) 537-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 08/14/1998
(301) 538-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 02/11/1995
(301) 539-
Landline
La Plata
Teleport Communications America - DC
Introduced 08/14/1998
(301) 540-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 541-
Landline
Mount Rainier
Teleport Communications America - DC
Introduced 11/20/1998
(301) 542-
Landline
Waldorf
Teleport Communications America - DC
Introduced 08/14/1998
(301) 543-
Landline
Laurel
Teleport Communications America - DC
Introduced 10/11/1997
(301) 544-
Wireless
Rockville
Verizon Maryland
Introduced 11/20/1998
(301) 545-
Landline
Rockville
Verizon Maryland
Introduced 10/11/1997
(301) 546-
Landline
Landover
Verizon Maryland
Introduced 04/07/2014
(301) 547-
Landline
Mount Rainier
Teleport Communications America - DC
Introduced 01/10/1996
(301) 548-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/11/1995
(301) 549-
Landline
Laurel
Verizon Maryland
Introduced 09/11/1994
(301) 551-
Landline
Kensington
Baltimore-washington Telephone (bwt)
Introduced 06/13/2000
(301) 552-
Landline
Lanham
Verizon Maryland
Introduced 02/04/1994
(301) 553-
Wireless
Waldorf
Usa Mobility Wireless
Introduced 05/18/1998
(301) 554-
Wireless
Bethesda
Usa Mobility Wireless
Introduced 05/18/1998
(301) 556-
Landline
Gaithersburg
Teleport Communications America - DC
Introduced 10/11/1997
(301) 557-
Landline
Mount Rainier
Broadwing Communications. LLC
Introduced 09/06/2011
(301) 558-
Wireless
College Park
Usa Mobility Wireless
Introduced 05/18/1998
(301) 559-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 560-
Landline
Hyattsville
Paetec Communications
Introduced 08/14/1998
(301) 561-
Landline
Silver Spring
Baltimore-washington Telephone (bwt)
Introduced 03/03/2001
(301) 562-
Landline
Silver Spring
Verizon Maryland
Introduced 04/01/1997
(301) 563-
Landline
Silver Spring
Verizon Maryland
Introduced 04/01/1997
(301) 564-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 565-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 566-
Wireless
Beltsville
Verizon Maryland
Introduced 10/11/1997
(301) 567-
Landline
Oxon Hill
Verizon Maryland
Introduced 02/04/1994
(301) 568-
Landline
Suitland
Verizon Maryland
Introduced 02/04/1994
(301) 569-
Wireless
Gaithersburg
Cellco Partnership DBA Verizon Wireless
Introduced 08/14/1998
(301) 570-
Landline
Ashton
Verizon Maryland
Introduced 02/04/1994
(301) 571-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 572-
Landline
Beltsville
Verizon Maryland
Introduced 02/04/1994
(301) 573-
Wireless
Hagerstown
Sprint Spectrum L.p.
Introduced 11/20/1998
(301) 574-
Landline
Upper Marlboro
Verizon Maryland
Introduced 02/11/1995
(301) 575-
Landline
Laurel
Us Lec Of Maryland
Introduced 08/14/1998
(301) 576-
Landline
Silver Spring
Paetec Communications
Introduced 08/14/1998
(301) 577-
Landline
Lanham
Verizon Maryland
Introduced 02/04/1994
(301) 578-
Landline
Silver Spring
Verizon Maryland
Introduced 10/15/1996
(301) 579-
Landline
Brandywine
Verizon Maryland
Introduced 02/04/1994
(301) 580-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/04/1994
(301) 581-
Landline
Rockville
Verizon Maryland
Introduced 04/01/1997
(301) 582-
Landline
Hagerstown
Verizon Maryland
Introduced 02/04/1994
(301) 583-
Landline
Hyattsville
Verizon Maryland
Introduced 01/25/1998
(301) 584-
Landline
Silver Spring
Baltimore-washington Telephone (bwt)
Introduced 06/13/2000
(301) 585-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 586-
Landline
Beltsville
Verizon Maryland
Introduced 01/10/1996
(301) 587-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 588-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 589-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 590-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 591-
Landline
Gaithersburg
Paetec Communications
Introduced 08/14/1998
(301) 592-
Landline
Silver Spring
Verizon Maryland
Introduced 10/11/1997
(301) 593-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 594-
Landline
Bethesda
Verizon Maryland
Introduced 02/04/1994
(301) 595-
Landline
Beltsville
Verizon Maryland
Introduced 02/04/1994
(301) 596-
Landline
Columbia
Verizon Maryland
Introduced 02/04/1994
(301) 597-
Landline
Hancock
New Frontiers Telecommunications
Introduced 06/13/2000
(301) 598-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 599-
Landline
Clinton
Verizon Maryland
Introduced 02/04/1994
(301) 600-
Landline
Frederick
Verizon Maryland
Introduced 07/06/2006
(301) 601-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 602-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 04/15/1996
(301) 603-
Landline
Rockville
Verizon Maryland
Introduced 07/01/1996
(301) 604-
Landline
Laurel
Verizon Maryland
Introduced 02/04/1994
(301) 605-
Landline
Rockville
Verizon Maryland
Introduced 10/15/1996
(301) 606-
Wireless
Frederick
Cellco Partnership DBA Verizon Wireless
Introduced 02/04/1994
(301) 607-
Landline
New Market
Verizon Maryland
Introduced 02/04/1994
(301) 608-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 609-
Landline
La Plata
Verizon Maryland
Introduced 02/04/1994
(301) 610-
Landline
Rockville
Verizon Maryland
Introduced 10/15/1996
(301) 612-
Wireless
Sandy Spring
Teleport Communications America
Introduced 10/11/2012
(301) 613-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 07/01/1996
(301) 614-
Landline
Greenbelt
Verizon Maryland
Introduced 01/10/1996
(301) 615-
Wireless
Greenbelt
Verizon Maryland
Introduced 02/04/1994
(301) 616-
Wireless
Oakland
Uscoc Of Cumberland DBA United States Cel Md
Introduced 02/04/1994
(301) 617-
Landline
Laurel
Verizon Maryland
Introduced 02/11/1995
(301) 618-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 619-
Landline
Frederick
Verizon Maryland
Introduced 02/04/1994
(301) 620-
Landline
Frederick
Verizon Maryland
Introduced 02/04/1994
(301) 621-
Landline
Glenn Dale
Verizon Maryland
Introduced 02/04/1994
(301) 622-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 623-
Landline
Mount Rainier
Teleport Communications America - DC
Introduced 10/11/1997
(301) 624-
Landline
Frederick
Verizon Maryland
Introduced 01/10/1996
(301) 625-
Landline
Silver Spring
Verizon Maryland
Introduced 01/10/1996
(301) 626-
Wireless
Silver Spring
Verizon Maryland
Introduced 05/18/1998
(301) 627-
Landline
Upper Marlboro
Verizon Maryland
Introduced 02/04/1994
(301) 628-
Landline
Mount Rainier
Teleport Communications America - DC
Introduced 01/10/1996
(301) 629-
Wireless
Glenn Dale
Verizon Maryland
Introduced 02/04/1994
(301) 630-
Landline
Temple Hills
Verizon Maryland
Introduced 02/04/1994
(301) 631-
Landline
Frederick
Verizon Maryland
Introduced 02/11/1995
(301) 632-
Landline
Waldorf
Verizon Maryland
Introduced 01/10/1996
(301) 633-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 02/11/1995
(301) 634-
Landline
Mount Rainier
Teleport Communications America - DC
Introduced 10/11/1997
(301) 635-
Landline
Myersville
New Frontiers Telecommunications
Introduced 06/13/2000
(301) 636-
Landline
Hyattsville
Verizon Maryland
Introduced 06/13/2000
(301) 637-
Landline
Rockville
Level 3 Communications
Introduced 08/14/1998
(301) 638-
Landline
Waldorf
Verizon Maryland
Introduced 01/10/1996
(301) 639-
Wireless
Frederick
Cellco Partnership DBA Verizon Wireless
Introduced 02/11/1995
(301) 640-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 641-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 09/11/1994
(301) 642-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 01/25/1998
(301) 643-
Wireless
Waldorf
Cellco Partnership DBA Verizon Wireless
Introduced 09/11/1994
(301) 644-
Landline
Frederick
Verizon Maryland
Introduced 08/14/1998
(301) 645-
Landline
Waldorf
Verizon Maryland
Introduced 02/04/1994
(301) 646-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 01/10/1996
(301) 647-
Wireless
Laurel
Verizon Maryland
Introduced 01/10/1996
(301) 648-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 02/04/1994
(301) 649-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 650-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 651-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/11/1995
(301) 652-
Landline
Chevy Chase
Verizon Maryland
Introduced 02/04/1994
(301) 653-
Wireless
Waldorf
New Cingular Wireless PCS - DC
Introduced 01/10/1996
(301) 654-
Landline
Chevy Chase
Verizon Maryland
Introduced 02/04/1994
(301) 655-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 04/15/1996
(301) 656-
Landline
Chevy Chase
Verizon Maryland
Introduced 02/04/1994
(301) 657-
Landline
Chevy Chase
Verizon Maryland
Introduced 02/04/1994
(301) 658-
Landline
Sandy Spring
Teleport Communications America - DC
Introduced 10/11/1997
(301) 659-
Wireless
Waldorf
New Cingular Wireless PCS - DC
Introduced 05/18/1998
(301) 660-
Wireless
Keedysville
New Cingular Wireless PCS - DC
Introduced 03/19/2004
(301) 661-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 09/11/1994
(301) 662-
Landline
Frederick
Verizon Maryland
Introduced 02/04/1994
(301) 663-
Landline
Frederick
Verizon Maryland
Introduced 02/04/1994
(301) 664-
Landline
Chevy Chase
Verizon Maryland
Introduced 01/10/1996
(301) 665-
Landline
Hagerstown
Verizon Maryland
Introduced 01/10/1996
(301) 666-
Landline
Glenn Dale
Teleport Communications America - DC
Introduced 08/14/1998
(301) 667-
Wireless
Myersville
New Cingular Wireless PCS - DC
Introduced 09/11/1994
(301) 668-
Landline
Frederick
Verizon Maryland
Introduced 08/14/1998
(301) 669-
Landline
Suitland
Verizon Maryland
Introduced 09/11/1994
(301) 670-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 671-
Landline
Hagerstown
New Frontiers Telecommunications
Introduced 06/13/2000
(301) 672-
Wireless
Tall Timbers
Sprint Spectrum L.p.
Introduced 11/20/1998
(301) 673-
Landline
Frederick
New Frontiers Telecommunications
Introduced 06/13/2000
(301) 674-
Wireless
Bethesda
Sprint Spectrum L.p.
Introduced 11/20/1998
(301) 675-
Wireless
Silver Spring
Omnipoint Communications Cap Operations
Introduced 06/13/2000
(301) 676-
Wireless
Frederick
New Cingular Wireless PCS - DC
Introduced 07/06/1997
(301) 677-
Landline
Glenn Dale
Teleport Communications America - DC
Introduced 02/04/1994
(301) 678-
Landline
Hancock
Verizon Maryland
Introduced 02/04/1994
(301) 679-
Landline
Mount Rainier
Teleport Communications America - DC
Introduced 08/14/1998
(301) 680-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 681-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 682-
Landline
Frederick
Verizon Maryland
Introduced 02/11/1995
(301) 683-
Landline
Mount Rainier
Teleport Communications America - DC
Introduced 08/14/1998
(301) 684-
Landline
Indian Head
Teleport Communications America - DC
Introduced 08/14/1998
(301) 685-
Landline
Damascus
Teleport Communications America - DC
Introduced 08/14/1998
(301) 686-
Landline
Oxon Hill
Verizon Maryland
Introduced 05/10/1999
(301) 687-
Landline
Frostburg
Verizon Maryland
Introduced 07/04/1995
(301) 688-
Landline
Laurel
Verizon Maryland
Introduced 02/04/1994
(301) 689-
Landline
Frostburg
Verizon Maryland
Introduced 02/04/1994
(301) 690-
Landline
Leonardtown
Idt America Corp
Introduced 05/23/2007
(301) 691-
Landline
Poolesville
Teleport Communications America - DC
Introduced 08/14/1998
(301) 692-
Landline
Mount Rainier
Teleport Communications America - DC
Introduced 08/14/1998
(301) 693-
Wireless
Frederick
Omnipoint Communications Cap Operations
Introduced 06/13/2000
(301) 694-
Landline
Frederick
Verizon Maryland
Introduced 02/04/1994
(301) 695-
Landline
Frederick
Verizon Maryland
Introduced 02/04/1994
(301) 696-
Landline
Frederick
Verizon Maryland
Introduced 02/04/1994
(301) 697-
Wireless
Cumberland
New Cingular Wireless PCS - DC
Introduced 02/04/1994
(301) 698-
Landline
Frederick
Verizon Maryland
Introduced 02/04/1994
(301) 699-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 701-
Wireless
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 702-
Landline
Temple Hills
Verizon Maryland
Introduced 02/04/1994
(301) 703-
Landline
Mount Airy
Level 3 Communications
Introduced 08/29/2002
(301) 704-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/04/1994
(301) 705-
Landline
Waldorf
Verizon Maryland
Introduced 02/04/1994
(301) 706-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 04/15/1996
(301) 707-
Wireless
Cumberland
Uscoc Of Cumberland DBA United States Cel Md
Introduced 02/04/1994
(301) 708-
Wireless
Greenbelt
Cavalier Telephone Mid-atlantic
Introduced 09/20/2011
(301) 709-
Wireless
Greenbelt
Usa Mobility Wireless
Introduced 02/04/1994
(301) 710-
Landline
Waldorf
Level 3 Communications
Introduced 12/30/2005
(301) 712-
Landline
Frederick
Mci Worldcom Communications
Introduced 03/27/2005
(301) 713-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 714-
Landline
Hagerstown
Verizon Maryland
Introduced 02/04/1994
(301) 715-
Landline
Upper Marlboro
Teleport Communications America - DC
Introduced 08/14/1998
(301) 716-
Wireless
Beltsville
Verizon Maryland
Introduced 07/01/1996
(301) 717-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/04/1994
(301) 718-
Landline
Chevy Chase
Verizon Maryland
Introduced 02/04/1994
(301) 719-
Landline
Mount Rainier
Teleport Communications America - DC
Introduced 08/14/1998
(301) 720-
Landline
Brandywine
Teleport Communications America - DC
Introduced 08/14/1998
(301) 721-
Landline
Gaithersburg
Verizon Maryland
Introduced 10/15/1996
(301) 722-
Landline
Cumberland
Verizon Maryland
Introduced 02/04/1994
(301) 723-
Landline
Cumberland
Verizon Maryland
Introduced 05/18/1998
(301) 724-
Landline
Cumberland
Verizon Maryland
Introduced 02/04/1994
(301) 725-
Landline
Laurel
Verizon Maryland
Introduced 02/04/1994
(301) 727-
Landline
Capitol Heights
Baltimore-washington Telephone (bwt)
Introduced 06/13/2000
(301) 728-
Wireless
Silver Spring
Omnipoint Communications Cap Operations
Introduced 06/13/2000
(301) 729-
Landline
Cumberland
Verizon Maryland
Introduced 02/04/1994
(301) 730-
Wireless
Myersville
New Cingular Wireless PCS - DC
Introduced 11/20/1998
(301) 731-
Landline
Lanham
Verizon Maryland
Introduced 02/04/1994
(301) 732-
Wireless
Greenbelt
Metro PCS
Introduced 10/04/2011
(301) 733-
Landline
Hagerstown
Verizon Maryland
Introduced 02/04/1994
(301) 734-
Landline
Silver Spring
Verizon Maryland
Introduced 02/11/1995
(301) 735-
Landline
Suitland
Verizon Maryland
Introduced 02/04/1994
(301) 736-
Landline
Suitland
Verizon Maryland
Introduced 02/04/1994
(301) 737-
Landline
Lexington Park
Verizon Maryland
Introduced 02/04/1994
(301) 738-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 739-
Landline
Hagerstown
Verizon Maryland
Introduced 02/04/1994
(301) 740-
Landline
Gaithersburg
Verizon Maryland
Introduced 04/22/2004
(301) 741-
Landline
Laurel
Level 3 Communications
Introduced 08/14/1998
(301) 742-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 02/04/1994
(301) 743-
Landline
Indian Head
Verizon Maryland
Introduced 02/04/1994
(301) 744-
Landline
Indian Head
Verizon Maryland
Introduced 10/11/1997
(301) 745-
Landline
Hagerstown
Verizon Maryland
Introduced 02/04/1994
(301) 746-
Landline
Accident
Verizon Maryland
Introduced 02/04/1994
(301) 747-
Landline
Mount Rainier
Teleport Communications America - DC
Introduced 11/20/1998
(301) 748-
Wireless
Frederick
Sprint Spectrum L.p.
Introduced 04/01/1997
(301) 749-
Landline
Oxon Hill
Verizon Maryland
Introduced 09/11/1994
(301) 750-
Landline
Friendsville
Core Communications
Introduced 03/18/2004
(301) 751-
Wireless
Waldorf
Cellco Partnership DBA Verizon Wireless
Introduced 01/10/1996
(301) 752-
Wireless
Waldorf
Cellco Partnership DBA Verizon Wireless
Introduced 08/14/1998
(301) 753-
Landline
Oxon Hill
Verizon Maryland
Introduced 02/04/1994
(301) 754-
Landline
Silver Spring
Verizon Maryland
Introduced 09/11/1994
(301) 755-
Landline
Silver Spring
Mci Worldcom Communications
Introduced 07/04/1995
(301) 756-
Landline
Laurel
Tw Telecom Of Maryland LLC
Introduced 01/25/1998
(301) 757-
Landline
Patuxent River
Verizon Maryland
Introduced 01/11/1997
(301) 758-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 09/11/1994
(301) 759-
Landline
Cumberland
Verizon Maryland
Introduced 02/04/1994
(301) 760-
Landline
Bethesda
Level 3 Communications
Introduced 02/27/2002
(301) 761-
Landline
Kensington
Level 3 Communications
Introduced 02/27/2002
(301) 762-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 763-
Landline
Suitland
Verizon Maryland
Introduced 02/04/1994
(301) 764-
Landline
Waldorf
Verizon Maryland
Introduced 01/10/1996
(301) 765-
Landline
Bethesda
Verizon Maryland
Introduced 10/15/1996
(301) 766-
Landline
Hagerstown
Verizon Maryland
Introduced 04/15/1996
(301) 767-
Landline
Bethesda
Verizon Maryland
Introduced 10/15/1996
(301) 768-
Landline
Cabin John
Level 3 Communications
Introduced 02/27/2002
(301) 769-
Landline
Avenue
Verizon Maryland
Introduced 02/04/1994
(301) 770-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 771-
Wireless
Chevy Chase
Verizon Maryland
Introduced 04/01/1997
(301) 772-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 773-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 774-
Landline
Ashton
Verizon Maryland
Introduced 02/04/1994
(301) 775-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 01/10/1996
(301) 776-
Landline
Laurel
Verizon Maryland
Introduced 02/04/1994
(301) 777-
Landline
Cumberland
Verizon Maryland
Introduced 02/04/1994
(301) 778-
Landline
Capitol Heights
Mci Worldcom Communications
Introduced 07/04/1995
(301) 779-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 780-
Landline
Upper Marlboro
Verizon Maryland
Introduced 01/25/1998
(301) 781-
Landline
Frostburg
New Frontiers Telecommunications
Introduced 06/13/2000
(301) 782-
Landline
Brandywine
Verizon Maryland
Introduced 02/04/1994
(301) 783-
Landline
Cumberland
New Frontiers Telecommunications
Introduced 06/13/2000
(301) 784-
Landline
Cumberland
Verizon Maryland
Introduced 09/11/1994
(301) 785-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 08/14/1998
(301) 786-
Landline
Mccoole
Verizon Maryland
Introduced 01/10/1996
(301) 787-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 08/14/1998
(301) 788-
Wireless
Frederick
Cellco Partnership DBA Verizon Wireless
Introduced 08/14/1998
(301) 789-
Landline
Hyattsville
Core Communications - PA
Introduced 08/13/2002
(301) 790-
Landline
Hagerstown
Verizon Maryland
Introduced 02/04/1994
(301) 791-
Landline
Hagerstown
Verizon Maryland
Introduced 02/04/1994
(301) 792-
Wireless
Silver Spring
Omnipoint Communications Cap Operations
Introduced 06/13/2000
(301) 793-
Wireless
Silver Spring
Omnipoint Communications Cap Operations
Introduced 06/13/2000
(301) 794-
Landline
Lanham
Verizon Maryland
Introduced 02/04/1994
(301) 795-
Landline
Hyattsville
Mcimetro Access Transmission Services LLC
Introduced 11/20/1998
(301) 796-
Landline
College Park
Verizon Maryland
Introduced 06/30/2003
(301) 797-
Landline
Hagerstown
Verizon Maryland
Introduced 02/04/1994
(301) 798-
Landline
New Market
Verizon Maryland
Introduced 07/01/1996
(301) 799-
Landline
Keedysville
Core Communications
Introduced 03/18/2004
(301) 800-
Wireless
Hagerstown
Virginia PCS Alliance, L.c.
Introduced 04/29/2010
(301) 801-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 04/15/1996
(301) 802-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 10/15/1996
(301) 803-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 804-
Landline
Sandy Spring
Mcimetro Access Transmission Services LLC
Introduced 11/20/1998
(301) 805-
Landline
Bowie
Verizon Maryland
Introduced 02/04/1994
(301) 806-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 07/01/1996
(301) 807-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/04/1994
(301) 808-
Landline
Capitol Heights
Verizon Maryland
Introduced 02/04/1994
(301) 809-
Landline
Bowie
Verizon Maryland
Introduced 02/04/1994
(301) 810-
Landline
Monrovia
AT&T Local
Introduced 08/14/1998
(301) 812-
Landline
North Beach
Verizon Maryland
Introduced 07/01/1996
(301) 813-
Landline
Bethesda
Baltimore-washington Telephone (bwt)
Introduced 06/30/2001
(301) 814-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 02/04/1994
(301) 815-
Landline
Frederick
Verizon Maryland
Introduced 02/04/1994
(301) 816-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 817-
Landline
Suitland
Verizon Maryland
Introduced 02/04/1994
(301) 818-
Landline
Waldorf
Verizon Maryland
Introduced 02/04/1994
(301) 819-
Wireless
Silver Spring
Verizon Maryland
Introduced 07/01/1996
(301) 820-
Landline
Gaithersburg
AT&T Local
Introduced 11/20/1998
(301) 821-
Landline
Laurel
AT&T Local
Introduced 08/14/1998
(301) 822-
Landline
Mount Rainier
AT&T Local
Introduced 08/14/1998
(301) 823-
Landline
Mount Rainier
AT&T Local
Introduced 08/14/1998
(301) 824-
Landline
Smithsburg
Verizon Maryland
Introduced 02/04/1994
(301) 825-
Landline
Rockville
AT&T Local
Introduced 08/14/1998
(301) 826-
Landline
Lexington Park
Verizon Maryland
Introduced 02/04/1994
(301) 827-
Landline
Bethesda
Verizon Maryland
Introduced 02/04/1994
(301) 828-
Landline
Bethesda
AT&T Local
Introduced 08/14/1998
(301) 829-
Landline
Mount Airy
Verizon Maryland
Introduced 02/04/1994
(301) 830-
Landline
Silver Spring
AT&T Local
Introduced 08/14/1998
(301) 831-
Landline
Adamstown
Verizon Maryland
Introduced 02/04/1994
(301) 832-
Landline
Mount Rainier
AT&T Local
Introduced 08/14/1998
(301) 833-
Landline
Glenn Dale
Teleport Communications America - DC
Introduced 11/11/2003
(301) 834-
Landline
Brunswick
Verizon Maryland
Introduced 02/04/1994
(301) 836-
Landline
Temple Hills
Verizon Maryland
Introduced 07/04/1995
(301) 837-
Landline
Hyattsville
Mcimetro Access Transmission Services LLC
Introduced 11/20/1998
(301) 838-
Landline
Rockville
Verizon Maryland
Introduced 07/04/1995
(301) 839-
Landline
Oxon Hill
Verizon Maryland
Introduced 02/04/1994
(301) 840-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 841-
Landline
Hyattsville
Mcimetro Access Transmission Services LLC
Introduced 11/20/1998
(301) 842-
Landline
Clear Spring
Verizon Maryland
Introduced 02/04/1994
(301) 843-
Landline
Waldorf
Verizon Maryland
Introduced 02/04/1994
(301) 844-
Wireless
Mount Rainier
Sprint Spectrum L.p.
Introduced 10/04/2011
(301) 845-
Landline
Walkersville
Verizon Maryland
Introduced 02/04/1994
(301) 846-
Landline
Frederick
Verizon Maryland
Introduced 02/04/1994
(301) 847-
Landline
Beltsville
Verizon Maryland
Introduced 02/04/1994
(301) 848-
Wireless
Waldorf
Cellco Partnership DBA Verizon Wireless
Introduced 08/14/1998
(301) 849-
Landline
Oakland
New Frontiers Telecommunications
Introduced 06/13/2000
(301) 850-
Landline
Glenn Dale
Level 3 Communications
Introduced 08/04/2002
(301) 851-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 852-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 853-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 854-
Landline
Columbia
Verizon Maryland
Introduced 02/04/1994
(301) 855-
Landline
Upper Marlboro
Verizon Maryland
Introduced 02/04/1994
(301) 856-
Landline
Clinton
Verizon Maryland
Introduced 02/04/1994
(301) 857-
Landline
Clear Spring
Core Communications
Introduced 07/12/2002
(301) 858-
Landline
Glenn Dale
Verizon Maryland
Introduced 02/04/1994
(301) 859-
Landline
Oxon Hill
Level 3 Communications
Introduced 01/09/2002
(301) 860-
Landline
Bowie
Verizon Maryland
Introduced 08/20/2000
(301) 861-
Landline
Waldorf
Level 3 Communications
Introduced 08/14/1998
(301) 862-
Landline
Lexington Park
Verizon Maryland
Introduced 02/04/1994
(301) 863-
Landline
Lexington Park
Verizon Maryland
Introduced 02/04/1994
(301) 864-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 865-
Landline
New Market
Verizon Maryland
Introduced 02/04/1994
(301) 866-
Landline
Lexington Park
Verizon Maryland
Introduced 10/15/1996
(301) 867-
Landline
Hyattsville
Mcimetro Access Transmission Services LLC
Introduced 11/20/1998
(301) 868-
Landline
Clinton
Verizon Maryland
Introduced 02/04/1994
(301) 869-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 870-
Landline
Waldorf
Verizon Maryland
Introduced 02/04/1994
(301) 871-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 872-
Landline
Ridge
Verizon Maryland
Introduced 02/04/1994
(301) 873-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/04/1994
(301) 874-
Landline
Adamstown
Verizon Maryland
Introduced 02/04/1994
(301) 875-
Landline
Laurel
Cellco Partnership DBA Verizon Wireless
Introduced 03/27/2005
(301) 876-
Landline
Cumberland
Level 3 Communications
Introduced 05/02/2002
(301) 877-
Landline
Clinton
Verizon Maryland
Introduced 01/11/1997
(301) 878-
Landline
Baltimore
Verizon Maryland
Introduced 01/10/1996
(301) 879-
Landline
Silver Spring
Verizon Maryland
Introduced 02/11/1995
(301) 880-
Landline
Tall Timbers
Level 3 Communications
Introduced 08/14/1998
(301) 881-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 882-
Landline
New Market
Core Communications
Introduced 03/18/2004
(301) 883-
Landline
Hyattsville
Verizon Maryland
Introduced 09/11/1994
(301) 884-
Landline
Mechanicsville
Verizon Maryland
Introduced 02/04/1994
(301) 885-
Landline
Waldorf
Verizon Maryland
Introduced 02/11/1995
(301) 886-
Landline
Laurel
Verizon Maryland
Introduced 07/04/1995
(301) 887-
Landline
Hyattsville
Verizon Maryland
Introduced 02/11/1995
(301) 888-
Landline
Brandywine
Verizon Maryland
Introduced 02/04/1994
(301) 889-
Landline
Glenn Dale
Verizon Maryland
Introduced 01/10/1996
(301) 890-
Landline
Beltsville
Verizon Maryland
Introduced 02/04/1994
(301) 891-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 892-
Landline
Hyattsville
Verizon Maryland
Introduced 03/11/2005
(301) 893-
Landline
Waldorf
Verizon Maryland
Introduced 01/10/1996
(301) 894-
Landline
Temple Hills
Verizon Maryland
Introduced 02/04/1994
(301) 895-
Landline
Grantsville
Verizon Maryland
Introduced 02/04/1994
(301) 896-
Landline
Rockville
Verizon Maryland
Introduced 01/10/1996
(301) 897-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 898-
Landline
Walkersville
Verizon Maryland
Introduced 02/04/1994
(301) 899-
Landline
Temple Hills
Verizon Maryland
Introduced 02/04/1994
(301) 900-
Landline
Frederick
Verizon Maryland
Introduced 10/22/2013
(301) 901-
Landline
Greenbelt
Verizon Maryland
Introduced 02/04/1994
(301) 902-
Landline
Beltsville
Verizon Maryland
Introduced 02/04/1994
(301) 903-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 904-
Wireless
Leonardtown
Cellco Partnership DBA Verizon Wireless
Introduced 02/04/1994
(301) 905-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 906-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 10/15/1996
(301) 907-
Landline
Chevy Chase
Verizon Maryland
Introduced 05/18/1998
(301) 908-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/04/1994
(301) 909-
Landline
Hyattsville
Mcimetro Access Transmission Services LLC
Introduced 11/20/1998
(301) 910-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 02/04/1994
(301) 912-
Landline
Odenton
Verizon Maryland
Introduced 02/04/1994
(301) 913-
Landline
Chevy Chase
Verizon Maryland
Introduced 02/04/1994
(301) 914-
Landline
Mc Henry
Mountain Communications DBA Procom
Introduced 12/27/2012
(301) 915-
Landline
Bethesda
Starpower Communications
Introduced 11/20/1998
(301) 916-
Landline
Poolesville
Verizon Maryland
Introduced 02/04/1994
(301) 917-
Landline
Rockville
Starpower Communications
Introduced 08/14/1998
(301) 918-
Landline
Lanham
Verizon Maryland
Introduced 02/04/1994
(301) 919-
Wireless
Bethesda
New Cingular Wireless PCS - DC
Introduced 02/04/1994
(301) 920-
Landline
Silver Spring
Starpower Communications
Introduced 08/14/1998
(301) 921-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 922-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 04/15/1996
(301) 923-
Wireless
Hyattsville
Verizon Maryland
Introduced 09/11/1994
(301) 924-
Landline
Ashton
Verizon Maryland
Introduced 02/04/1994
(301) 925-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 926-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 927-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 928-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/11/1995
(301) 929-
Landline
Kensington
Verizon Maryland
Introduced 02/04/1994
(301) 930-
Wireless
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 931-
Landline
Beltsville
Verizon Maryland
Introduced 07/04/1995
(301) 932-
Landline
La Plata
Verizon Maryland
Introduced 02/04/1994
(301) 933-
Landline
Kensington
Verizon Maryland
Introduced 02/04/1994
(301) 934-
Landline
La Plata
Verizon Maryland
Introduced 02/04/1994
(301) 935-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 937-
Landline
Beltsville
Verizon Maryland
Introduced 02/04/1994
(301) 938-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 04/15/1996
(301) 939-
Landline
Laurel
Verizon Maryland
Introduced 04/15/1996
(301) 940-
Wireless
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 941-
Landline
Chevy Chase
Verizon Maryland
Introduced 02/11/1995
(301) 942-
Landline
Kensington
Verizon Maryland
Introduced 02/04/1994
(301) 943-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 04/15/1996
(301) 944-
Landline
Gaithersburg
Mcimetro Access Transmission Services LLC
Introduced 11/20/1998
(301) 945-
Landline
Hyattsville
Mcimetro Access Transmission Services LLC
Introduced 11/20/1998
(301) 946-
Landline
Kensington
Verizon Maryland
Introduced 02/04/1994
(301) 947-
Landline
Gaithersburg
Verizon Maryland
Introduced 04/15/1996
(301) 948-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 949-
Landline
Kensington
Verizon Maryland
Introduced 02/04/1994
(301) 951-
Landline
Chevy Chase
Verizon Maryland
Introduced 02/04/1994
(301) 952-
Landline
Upper Marlboro
Verizon Maryland
Introduced 02/04/1994
(301) 953-
Landline
Laurel
Verizon Maryland
Introduced 02/04/1994
(301) 955-
Landline
Hyattsville
Mcimetro Access Transmission Services LLC
Introduced 11/20/1998
(301) 956-
Landline
Rockville
Verizon Maryland
Introduced 05/22/2002
(301) 957-
Landline
Laurel
Mcimetro Access Transmission Services LLC
Introduced 11/20/1998
(301) 960-
Landline
Silver Spring
Mcimetro Access Transmission Services LLC
Introduced 11/20/1998
(301) 961-
Landline
Chevy Chase
Verizon Maryland
Introduced 02/04/1994
(301) 962-
Landline
Kensington
Verizon Maryland
Introduced 01/11/1997
(301) 963-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 964-
Wireless
Myersville
New Cingular Wireless PCS - DC
Introduced 04/15/1996
(301) 965-
Landline
Hyattsville
Mcimetro Access Transmission Services LLC
Introduced 11/20/1998
(301) 966-
Landline
Hyattsville
Mcimetro Access Transmission Services LLC
Introduced 11/20/1998
(301) 967-
Landline
Suitland
Verizon Maryland
Introduced 02/04/1994
(301) 968-
Landline
Bethesda
Mci Worldcom Communications
Introduced 07/04/1995
(301) 969-
Landline
Brunswick
Comcast Phone Of Northern Maryland
Introduced 03/06/2007
(301) 970-
Landline
Annapolis
Verizon Maryland
Introduced 02/04/1994
(301) 971-
Landline
Oxon Hill
Starpower Communications
Introduced 11/20/1998
(301) 972-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 973-
Landline
Glenn Dale
Verizon Maryland
Introduced 02/04/1994
(301) 974-
Landline
Laurel
Starpower Communications
Introduced 11/20/1998
(301) 975-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 976-
Unknown
Baltimore-washington Telephone (bwt)
Introduced 10/17/2005
(301) 977-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 978-
Landline
Gaithersburg
Verizon Maryland
Introduced 10/11/1997
(301) 979-
Landline
Gaithersburg
Verizon Maryland
Introduced 04/15/1996
(301) 980-
Wireless
Silver Spring
Cellco Partnership DBA Verizon Wireless
Introduced 02/04/1994
(301) 981-
Landline
Mount Rainier
Tw Telecom Of Maryland LLC
Introduced 02/04/1994
(301) 982-
Landline
Greenbelt
Verizon Maryland
Introduced 02/04/1994
(301) 983-
Landline
Bethesda
Verizon Maryland
Introduced 02/04/1994
(301) 984-
Landline
Rockville
Verizon Maryland
Introduced 02/04/1994
(301) 985-
Landline
Hyattsville
Verizon Maryland
Introduced 02/04/1994
(301) 986-
Landline
Chevy Chase
Verizon Maryland
Introduced 02/04/1994
(301) 987-
Landline
Gaithersburg
Verizon Maryland
Introduced 10/11/1997
(301) 988-
Wireless
Hagerstown
Uscoc Of Cumberland DBA United States Cel Md
Introduced 07/06/1997
(301) 989-
Landline
Silver Spring
Verizon Maryland
Introduced 02/04/1994
(301) 990-
Landline
Gaithersburg
Verizon Maryland
Introduced 02/04/1994
(301) 991-
Wireless
Hagerstown
Sprint Spectrum L.p.
Introduced 04/15/1996
(301) 992-
Wireless
Hagerstown
Sprint Spectrum L.p.
Introduced 10/11/1997
(301) 993-
Wireless
Greenbelt
Verizon Maryland
Introduced 11/20/1998
(301) 994-
Landline
Valley Lee
Verizon Maryland
Introduced 02/04/1994
(301) 995-
Landline
Patuxent River
Verizon Maryland
Introduced 08/14/1998
(301) 996-
Wireless
Beltsville
Sprint Spectrum L.p.
Introduced 01/10/1996
(301) 997-
Landline
Leonardtown
Verizon Maryland
Introduced 01/25/1998
(301) 998-
Landline
Rockville
Verizon Maryland
Introduced 01/10/1996

Heavily Reported Numbers

Phone complaint data powered by CallerCenter.com

Most Searched Numbers

Cell
All Time
301-202-0000
301-202-0001
301-202-0002
301-202-0003
301-202-0004
301-202-0005
301-202-0006
301-202-0007
301-202-0008
301-202-0009
301-202-0010
301-202-0011
301-202-0012
301-202-0013
301-202-0014
301-202-0015
301-202-0016
301-202-0017
301-202-0018
301-202-0019
This Month
301-202-0000
301-202-0001
301-202-0002
301-202-0003
301-202-0004
301-202-0005
301-202-0006
301-202-0007
301-202-0008
301-202-0009
301-202-0010
301-202-0011
301-202-0012
301-202-0013
301-202-0014
301-202-0015
301-202-0016
301-202-0017
301-202-0018
301-202-0019
Landline
All Time
301-200-0000
301-200-0001
301-200-0002
301-200-0003
301-200-0004
301-200-0011
301-200-0030
301-200-0115
301-200-0181
301-200-1180
301-200-1220
301-200-1306
301-200-1567
301-200-1611
301-200-1802
301-200-1972
301-200-2049
301-200-2056
301-200-2230
301-200-2267
This Month
301-200-0000
301-200-0001
301-200-0002
301-200-0003
301-200-0004
301-200-0011
301-200-0030
301-200-0115
301-200-0181
301-200-1180
301-200-1220
301-200-1306
301-200-1567
301-200-1611
301-200-1802
301-200-1972
301-200-2049
301-200-2056
301-200-2230
301-200-2267