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443 Area Code

About Area Code 443

State: Maryland
Major City: Baltimore
Timezone: Eastern (1:45am)
Short URL: allareacodes.com/443
Download: Download this data

Area Code 443 Map

  • Annapolis, MD
  • Arbutus, MD
  • Arnold, MD
  • Baltimore, MD
  • Bel Air North, MD
  • Bel Air South, MD
  • Carney, MD
  • Catonsville, MD
  • Columbia, MD
  • Crofton, MD
  • Dundalk, MD
  • Edgewood, MD
  • Eldersburg, MD
  • Elkridge, MD
  • Ellicott City, MD
  • Essex, MD
  • Glen Burnie, MD
  • Lochearn, MD
  • Middle River, MD
  • Milford Mill, MD
  • Odenton, MD
  • Parkville, MD
  • Perry Hall, MD
  • Pikesville, MD
  • Randallstown, MD
  • Reisterstown, MD
  • Salisbury, MD
  • Severn, MD
  • Severna Park, MD
  • South Gate, MD
  • Towson, MD

More About Area Code 443

Area code 443 was first put in service June 1, 1997. In 2012, area code 667 was created as an overlay to area code 443. Currently, the largest city it serves is Baltimore, MD, and it overlaps coverage areas with area codes 410 and 667.

Overview of Active Prefixes

Assigned to Carrier

Usage

Carriers

Active Phone Number Prefixes

Prefix
Usage
Primary City
Carrier
Introduced
Landline
Baltimore
Allegiance Telecom
Introduced 02/21/2001
Wireless
Westminster
Cellco Partnership DBA Verizon Wireless
Introduced 12/01/2011
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 01/09/2012
Landline
West River
Verizon Maryland
Introduced 03/03/2001
Wireless
Pikesville
New Cingular Wireless PCS - DC
Introduced 05/15/2003
Wireless
Cambridge
Sprint Spectrum L.p.
Introduced 01/20/2004
Wireless
Perryville
Cellco Partnership DBA Verizon Wireless
Introduced 01/14/2000
Wireless
Elkton
Omnipoint Communications Enterprises, L.p.
Introduced 08/14/1998
Landline
Essex
Sprint Spectrum L.p.
Introduced 02/01/2011
Landline
Havre De Grace
Cavalier Telephone (mid-atlantic)
Introduced 02/27/1999
Landline
Aberdeen
Sprint Spectrum L.p.
Introduced 09/30/2011
Landline
Sparks Glencoe
Us Lec Of Maryland
Introduced 08/14/1998
Landline
Baltimore
Verizon Maryland
Introduced 05/18/1998
Landline
Annapolis
New Cingular Wireless PCS - DC
Introduced 10/11/2011
Landline
Chestertown
Core Communications
Introduced 01/14/2000
Landline
Dundalk
Cavalier Telephone Mid-atlantic
Introduced 10/13/1999
Landline
Annapolis
Core Communications
Introduced 01/14/2000
Landline
Reisterstown
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Baltimore
Level 3 Communications
Introduced 05/18/1998
Landline
Baltimore
Verizon Maryland
Introduced 11/20/1998
Landline
Annapolis
Level 3 Communications
Introduced 08/20/2000
Landline
Reisterstown
Xo Maryland
Introduced 01/14/2000
Wireless
Annapolis
Cellco Partnership DBA Verizon Wireless
Introduced 10/13/1999
Landline
Baltimore
Mci Worldcom Communications
Introduced 05/10/1999
Landline
Cambridge
Sprint Spectrum L.p.
Introduced 01/20/2004
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 08/14/1998
Landline
Port Deposit
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Middle River
Us Lec Of Maryland
Introduced 06/30/2001
Landline
Severna Park
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
Odenton
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Baltimore
AT&T Local
Introduced 08/14/1998
Landline
Willards
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Landline
Mardela Springs
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Landline
Snow Hill
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Wireless
Salisbury
Cellco Partnership DBA Verizon Wireless
Introduced 10/13/1999
Landline
Cardiff
Core Communications
Introduced 01/14/2000
Landline
North Beach
Core Communications
Introduced 01/14/2000
Landline
Parkton
Ctc Communications Corp.
Introduced 01/14/2000
Wireless
Easton
New Cingular Wireless PCS - DC
Introduced 01/20/2004
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 01/27/2012
Landline
Westminster
Global Naps South
Introduced 01/14/2000
Landline
Sparrows Point
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Wireless
Fallston
Cellco Partnership DBA Verizon Wireless
Introduced 10/13/1999
Landline
Westminster
Level 3 Communications
Introduced 10/13/1999
Landline
Elkton
Cavalier Telephone (mid-atlantic)
Introduced 02/27/1999
Landline
Elkton
Core Communications
Introduced 01/14/2000
Landline
Union Bridge
Ctc Communications Corp.
Introduced 01/14/2000
Wireless
Catonsville
Cellco Partnership DBA Verizon Wireless
Introduced 01/15/2007
Landline
Stevensville
Verizon Maryland
Introduced 07/22/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 08/14/1998
Wireless
Chestertown
Local Access LLC
Introduced 08/16/2013
Wireless
Perryville
Cellco Partnership DBA Verizon Wireless
Introduced 09/08/2009
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 08/14/1998
Wireless
Annapolis
Omnipoint Communications Cap Operations
Introduced 06/13/2000
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 07/22/1999
Landline
North East
Ctc Communications Corp.
Introduced 01/14/2000
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 08/14/1998
Wireless
Easton
New Cingular Wireless PCS - DC
Introduced 07/22/1999
Landline
Columbia
Verizon Maryland
Introduced 08/14/1998
Landline
Salisbury
Verizon Maryland
Introduced 07/22/1999
Landline
Severna Park
Mci Worldcom Communications
Introduced 06/13/2000
Landline
Centreville
Verizon Maryland
Introduced 01/14/2000
Landline
Baltimore
Verizon Maryland
Introduced 07/22/1999
Landline
Pikesville
Xo Maryland
Introduced 01/14/2000
Landline
Fork
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
Glenwood
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Darlington
Teleport Communications America
Introduced 02/27/1999
Landline
Baltimore
Core Communications
Introduced 01/14/2000
Landline
Towson
Xo Maryland
Introduced 01/14/2000
Landline
Baltimore
Paetec Communications
Introduced 10/13/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 10/21/2002
Landline
Baltimore
Teleport Communications America
Introduced 08/14/1998
Landline
Reisterstown
Teleport Communications America
Introduced 08/14/1998
Landline
Severn
Verizon Maryland
Introduced 10/13/1999
Landline
Baltimore
Comcast Phone Of Northern Maryland
Introduced 05/18/1998
Landline
Baltimore
Allegiance Telecom
Introduced 06/13/2000
Wireless
Sykesville
Sprint Spectrum L.p.
Introduced 07/22/1999
Landline
Baltimore
Vdl DBA Global Telecom Brokers
Introduced 10/02/2003
Landline
Baltimore
Allegiance Telecom
Introduced 10/13/1999
Wireless
Sykesville
New Cingular Wireless PCS - DC
Introduced 08/14/1998
Landline
Baltimore
Allegiance Telecom
Introduced 06/13/2000
Wireless
Chestertown
Sprint Spectrum L.p.
Introduced 10/04/2004
Landline
Baltimore
Paetec Communications
Introduced 10/13/1999
Landline
Jessup
Xo Maryland
Introduced 01/14/2000
Landline
Columbia
Verizon Maryland
Introduced 10/13/1999
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 08/14/1998
Landline
Baltimore
Verizon Maryland
Introduced 07/22/1999
Landline
Baltimore
Allegiance Telecom
Introduced 06/13/2000
Landline
Westminster
Mci Worldcom Communications
Introduced 05/16/2011
Landline
Parkville
Tw Telecom Of Maryland LLC
Introduced 10/13/1999
Landline
Hampstead
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Laurel
Level 3 Communications
Introduced 10/13/1999
Landline
Westminster
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
West River
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Prince Frederick
Level 3 Communications
Introduced 10/13/1999
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Arbutus
Teleport Communications America
Introduced 08/14/1998
Wireless
Easton
New Cingular Wireless PCS - DC
Introduced 11/15/2002
Landline
Fallston
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Sykesville
Broadwing Communications. LLC
Introduced 08/20/2000
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 04/05/2012
Landline
Crofton
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Aberdeen
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 08/14/1998
Landline
Bel Air
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Baltimore
Allegiance Telecom
Introduced 06/13/2000
Wireless
Elkton
Sprint Spectrum L.p.
Introduced 11/20/1998
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 10/31/2000
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Fork
Global Crossing Local Services-md
Introduced 07/22/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 02/01/2011
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Cockeysville
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Landline
Columbia
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Annapolis
Paetec Communications
Introduced 06/13/2000
Landline
Towson
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
Rhodesdale
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 07/22/1999
Landline
Ellicott City
Cavalier Telephone Mid-atlantic
Introduced 11/20/1998
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 02/21/2001
Landline
Aberdeen
Cavalier Telephone Mid-atlantic
Introduced 03/03/2001
Landline
Sykesville
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Jessup
Global Crossing Local Services-md
Introduced 02/27/1999
Landline
Baltimore
Cavalier Telephone Mid-atlantic
Introduced 05/18/1998
Landline
Taneytown
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Crofton
Cavalier Telephone Mid-atlantic
Introduced 05/09/2001
Wireless
Annapolis
Leap Wireless Intl DBA Cricket Comm
Introduced 02/13/2009
Landline
Towson
Allegiance Telecom
Introduced 03/14/2001
Landline
Brooklyn
Xo Maryland
Introduced 01/14/2000
Wireless
Annapolis
Sprint Spectrum L.p.
Introduced 05/10/1999
Landline
Sparrows Point
Xo Maryland
Introduced 01/14/2000
Landline
Sparks Glencoe
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Sherwood Forest
Ctc Communications Corp.
Introduced 01/14/2000
Wireless
Westminster
Cellco Partnership DBA Verizon Wireless
Introduced 10/13/1999
Landline
Baltimore
Level 3 Communications
Introduced 05/18/1998
Landline
Solomons
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Millersville
Teleport Communications America
Introduced 02/27/1999
Landline
Severna Park
Core Communications
Introduced 01/14/2000
Landline
Aberdeen
Level 3 Communications
Introduced 10/13/1999
Landline
Severna Park
Xo Maryland
Introduced 01/14/2000
Landline
Cardiff
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Baltimore
Teleport Communications America
Introduced 08/14/1998
Landline
Westminster
Core Communications
Introduced 01/14/2000
Wireless
Elkton
Cellco Partnership DBA Verizon Wireless
Introduced 08/20/2000
Landline
Columbia
Us Lec Of Maryland
Introduced 06/13/2000
Landline
Baltimore
AT&T Local
Introduced 11/20/1998
Landline
Cockeysville
Verizon Maryland
Introduced 03/19/2004
Landline
Baltimore
Level 3 Communications
Introduced 07/22/1999
Landline
Baltimore
Level 3 Communications
Introduced 07/22/1999
Landline
Bel Air
Level 3 Communications
Introduced 07/22/1999
Landline
Pikesville
Verizon Maryland
Introduced 10/13/1999
Landline
Salisbury
Ymax Communications Corp.
Introduced 02/17/2011
Wireless
Delmar
Cellco Partnership DBA Verizon Wireless
Introduced 06/13/2000
Landline
Aberdeen
Teleport Communications America
Introduced 08/14/1998
Landline
Sykesville
Core Communications
Introduced 01/14/2000
Wireless
Easton
Omnipoint Communications Cap Operations
Introduced 06/13/2000
Landline
Severn
Xo Maryland
Introduced 01/14/2000
Landline
Baltimore
Teleport Communications America
Introduced 08/14/1998
Wireless
Salisbury
Omnipoint Communications Cap Operations
Introduced 06/13/2000
Wireless
Salisbury
Sprint Spectrum L.p.
Introduced 04/17/2001
Landline
Columbia
Verizon Maryland
Introduced 06/13/2000
Landline
Westminster
Core Communications
Introduced 01/14/2000
Landline
Bel Air
Core Communications
Introduced 01/14/2000
Landline
Annapolis
New Cingular Wireless PCS - DC
Introduced 10/31/2000
Landline
Bel Air
Broadwing Communications. LLC
Introduced 10/31/2000
Landline
Edgewood
Us Lec Of Maryland
Introduced 03/19/2001
Wireless
Ocean City
Sprint Spectrum L.p.
Introduced 10/31/2000
Landline
Aberdeen
Cavalier Telephone (mid-atlantic)
Introduced 02/27/1999
Wireless
Hampstead
Sprint Spectrum L.p.
Introduced 08/20/2000
Landline
Baltimore
Teleport Communications America
Introduced 08/14/1998
Wireless
Towson
Cellco Partnership DBA Verizon Wireless
Introduced 06/09/2010
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 07/27/2004
Landline
Pikesville
Comcast Phone Of Northern Maryland
Introduced 02/23/2007
Landline
Baltimore
Level 3 Communications
Introduced 05/18/1998
Landline
Reisterstown
Xo Maryland
Introduced 01/14/2000
Landline
Cambridge
Core Communications
Introduced 01/14/2000
Landline
Westminster
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Parkville
Cavalier Telephone Mid-atlantic
Introduced 10/13/1999
Landline
Easton
Core Communications
Introduced 01/14/2000
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 02/27/1999
Landline
Pocomoke
Core Communications
Introduced 01/14/2000
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 04/13/2006
Landline
Salisbury
Core Communications
Introduced 01/14/2000
Landline
Churchville
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Baltimore
AT&T Local
Introduced 05/10/1999
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Pikesville
Verizon Maryland
Introduced 11/20/1998
Landline
Aberdeen
Verizon Maryland
Introduced 08/13/2009
Landline
Odenton
Global Crossing Local Services-md
Introduced 07/22/1999
Wireless
Salisbury
Cellco Partnership DBA Verizon Wireless
Introduced 04/06/2009
Wireless
Sykesville
Sprint Spectrum L.p.
Introduced 03/15/2001
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Baltimore
Xo Maryland
Introduced 10/31/2000
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 10/17/2011
Landline
Edgewood
Teleport Communications America
Introduced 02/27/1999
Landline
Aberdeen
Broadwing Communications. LLC
Introduced 06/20/2001
Wireless
Solomons
Sprint Spectrum L.p.
Introduced 10/31/2000
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Elkton
Teleport Communications America
Introduced 02/27/1999
Landline
Baltimore
Allegiance Telecom
Introduced 06/13/2000
Landline
Baltimore
Xo Maryland
Introduced 10/31/2000
Landline
Edgewood
Cavalier Telephone Mid-atlantic
Introduced 10/31/2000
Landline
Baltimore
Centurylink Communications LLC
Introduced 06/21/2013
Landline
Churchville
Teleport Communications America
Introduced 02/27/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 05/10/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 05/10/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 05/10/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 05/10/1999
Landline
Fallston
Teleport Communications America
Introduced 02/27/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 05/10/1999
Landline
Glenwood
Cavalier Telephone Mid-atlantic
Introduced 10/31/2000
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Wireless
Fork
New Cingular Wireless PCS - DC
Introduced 08/14/1998
Wireless
Glen Burnie
Leap Wireless Intl DBA Cricket Comm
Introduced 02/13/2009
Landline
Baltimore
Broadwing Communications. LLC
Introduced 10/13/1999
Landline
Cardiff
Teleport Communications America
Introduced 02/27/1999
Landline
Baltimore
AT&T Local
Introduced 08/14/1998
Landline
Baltimore
Paetec Communications
Introduced 06/30/2001
Landline
Princess Anne
Core Communications
Introduced 01/14/2000
Landline
Cockeysville
Core Communications
Introduced 01/14/2000
Landline
Woodlawn
Cavalier Telephone Mid-atlantic
Introduced 10/13/1999
Landline
Baltimore
Xo Maryland
Introduced 05/18/2001
Landline
Randallstown
Xo Maryland
Introduced 01/14/2000
Landline
Prince Frederick
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Annapolis
Xo Maryland
Introduced 02/21/2001
Landline
Federalsburg
Comcast Phone Of Northern Maryland
Introduced 11/01/2004
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 02/01/2011
Landline
Woodlawn
Verizon Maryland
Introduced 11/20/1998
Landline
Pocomoke
Teleport Communications America
Introduced 11/01/2004
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 10/08/2008
Landline
Trappe
Cellco Partnership DBA Verizon Wireless
Introduced 11/01/2004
Landline
Annapolis
Verizon Maryland
Introduced 03/03/2001
Landline
Glenwood
Teleport Communications America
Introduced 02/27/1999
Landline
Parkville
Cavalier Telephone Mid-atlantic
Introduced 05/09/2001
Landline
Baltimore
Verizon Maryland
Introduced 10/13/2005
Landline
Elkridge
Verizon Maryland
Introduced 06/30/2001
Landline
Queenstown
Mci Worldcom Communications
Introduced 11/01/2004
Wireless
Baltimore
Leap Wireless Intl DBA Cricket Comm
Introduced 12/15/2008
Landline
Denton
Comcast Phone Of Northern Maryland
Introduced 11/01/2004
Landline
Baltimore
Broadview Networks
Introduced 03/28/2007
Landline
Baltimore
Level 3 Communications
Introduced 05/10/1999
Landline
Baltimore
Paetec Communications
Introduced 10/13/1999
Landline
Baltimore
Us Lec Of Maryland
Introduced 09/07/2005
Landline
Baltimore
Neutral Tandem-maryland
Introduced 10/12/2007
Wireless
Annapolis
Omnipoint Communications Cap Operations
Introduced 03/03/2001
Landline
Baltimore
Verizon Maryland
Introduced 03/09/2006
Landline
Edgewood
AT&T Local
Introduced 03/03/2001
Landline
Baltimore
Teleport Communications America
Introduced 08/14/1998
Landline
Annapolis
Allegiance Telecom
Introduced 03/03/2001
Landline
Baltimore
Paetec Communications
Introduced 03/03/2001
Landline
Baltimore
Allegiance Telecom
Introduced 06/13/2000
Landline
Parkville
Us Lec Of Maryland
Introduced 06/13/2000
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 11/06/2008
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 02/27/1999
Landline
Churchville
Broadview Networks
Introduced 03/16/2010
Wireless
Towson
Cellco Partnership DBA Verizon Wireless
Introduced 06/13/2000
Wireless
Elkton
Sprint Spectrum L.p.
Introduced 05/10/1999
Wireless
Baltimore
Leap Wireless Intl DBA Cricket Comm
Introduced 03/20/2009
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 04/04/2007
Wireless
Baltimore
Leap Wireless Intl DBA Cricket Comm
Introduced 03/20/2009
Landline
Towson
Us Lec Of Maryland
Introduced 04/29/2008
Landline
Columbia
Us Lec Of Maryland
Introduced 06/13/2000
Landline
Baltimore
Level 3 Communications
Introduced 01/14/2000
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 03/28/2007
Wireless
Catonsville
New Cingular Wireless PCS - DC
Introduced 02/27/1999
Landline
Baltimore
Mci Worldcom Communications
Introduced 06/01/2011
Wireless
Annapolis
Verizon Maryland
Introduced 11/20/1998
Wireless
Cambridge
Cellco Partnership DBA Verizon Wireless
Introduced 01/13/2007
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 03/06/2009
Landline
Laurel
Verizon Maryland
Introduced 11/20/1998
Wireless
Chestertown
Cellco Partnership DBA Verizon Wireless
Introduced 08/20/2000
Landline
Annapolis
Us Lec Of Maryland
Introduced 06/30/2001
Landline
Annapolis
Verizon Maryland
Introduced 11/20/1998
Landline
Cardiff
Broadwing Communications. LLC
Introduced 08/20/2000
Landline
Edgewood
Broadwing Communications. LLC
Introduced 08/20/2000
Landline
Elkton
Broadwing Communications. LLC
Introduced 08/20/2000
Landline
Prince Frederick
Broadwing Communications. LLC
Introduced 08/20/2000
Landline
Westminster
Broadwing Communications. LLC
Introduced 08/20/2000
Wireless
Baltimore
Leap Wireless Intl DBA Cricket Comm
Introduced 06/23/2010
Landline
Baltimore
Teleport Communications America
Introduced 02/27/1999
Landline
Edgewood
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Parkton
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Wireless
Delmar
Cellco Partnership DBA Verizon Wireless
Introduced 03/06/2009
Landline
Millersville
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Wireless
Easton
Sprint Spectrum L.p.
Introduced 08/14/1998
Wireless
Salisbury
Sprint Spectrum L.p.
Introduced 08/14/1998
Landline
Baltimore
Allegiance Telecom
Introduced 06/13/2000
Landline
Jarrettsville
Global Crossing Local Services-md
Introduced 07/22/1999
Wireless
Baltimore
Leap Wireless Intl DBA Cricket Comm
Introduced 03/20/2009
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Havre De Grace
Teleport Communications America
Introduced 02/27/1999
Landline
Baltimore
Xo Maryland
Introduced 10/31/2000
Landline
Fallston
Cavalier Telephone Mid-atlantic
Introduced 10/31/2000
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 06/13/2000
Landline
Hampstead
Teleport Communications America
Introduced 02/27/1999
Landline
Hampstead
Cavalier Telephone Mid-atlantic
Introduced 10/31/2000
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 02/10/2009
Wireless
Annapolis
Cellco Partnership DBA Verizon Wireless
Introduced 12/04/2007
Landline
Edgewood
Verizon Maryland
Introduced 07/22/1999
Wireless
Berlin
New Cingular Wireless PCS - DC
Introduced 10/31/2000
Landline
Columbia
Us Lec Of Maryland
Introduced 06/13/2000
Wireless
Cambridge
Cellco Partnership DBA Verizon Wireless
Introduced 06/08/2009
Landline
Sykesville
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Columbia
Verizon Maryland
Introduced 12/16/2008
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Wireless
Catonsville
New Cingular Wireless PCS - DC
Introduced 02/27/1999
Wireless
Cambridge
Cellco Partnership DBA Verizon Wireless
Introduced 01/14/2000
Landline
Reisterstown
Paetec Communications
Introduced 06/30/2001
Landline
Salisbury
Verizon Maryland
Introduced 08/20/2000
Landline
Baltimore
Allegiance Telecom
Introduced 10/13/1999
Wireless
Baltimore
Leap Wireless Intl DBA Cricket Comm
Introduced 03/20/2009
Landline
Havre De Grace
Ctc Communications Corp.
Introduced 01/14/2000
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 03/19/2001
Wireless
Bel Air
Sprint Spectrum L.p.
Introduced 08/20/2000
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 07/22/2008
Landline
Baltimore
Paetec Communications
Introduced 06/30/2001
Wireless
Baltimore
Leap Wireless Intl DBA Cricket Comm
Introduced 03/20/2009
Wireless
Prince Frederick
Sprint Spectrum L.p.
Introduced 08/20/2000
Landline
Jarrettsville
Teleport Communications America
Introduced 02/27/1999
Landline
Annapolis
Cellco Partnership DBA Verizon Wireless
Introduced 01/15/2001
Landline
Columbia
Verizon Maryland
Introduced 02/27/1999
Wireless
Westminster
Sprint Spectrum L.p.
Introduced 08/20/2000
Landline
Columbia
Verizon Maryland
Introduced 05/22/2009
Wireless
Columbia
Omnipoint Communications Cap Operations
Introduced 06/20/2001
Landline
Columbia
Us Lec Of Maryland
Introduced 01/14/2000
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 03/03/2001
Landline
Baltimore
Paetec Communications
Introduced 10/13/1999
Landline
Columbia
Comcast Phone Of Northern Maryland
Introduced 06/30/2001
Landline
Arbutus
Verizon Maryland
Introduced 05/10/1999
Landline
Pikesville
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
Columbia
Broadwing Communications. LLC
Introduced 05/18/2001
Landline
Baltimore
Verizon Maryland
Introduced 05/18/1998
Wireless
Westminster
Cellco Partnership DBA Verizon Wireless
Introduced 05/07/2009
Landline
Baltimore
Allegiance Telecom
Introduced 10/13/1999
Landline
Dundalk
Us Lec Of Maryland
Introduced 01/14/2000
Landline
North Beach
Level 3 Communications
Introduced 06/30/2001
Landline
Baltimore
Level 3 Communications
Introduced 01/14/2000
Landline
Baltimore
Verizon Maryland
Introduced 06/13/2000
Wireless
Elkton
Cellco Partnership DBA Verizon Wireless
Introduced 05/10/1999
Wireless
Middle River
Omnipoint Communications Cap Operations
Introduced 07/23/2001
Landline
Cockeysville
Verizon Maryland
Introduced 08/14/1998
Landline
Baltimore
Allegiance Telecom
Introduced 06/13/2000
Landline
Aberdeen
Xo Maryland
Introduced 01/15/2001
Landline
Essex
Comcast Phone Of Northern Maryland
Introduced 06/30/2001
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 07/18/2011
Landline
Columbia
Us Lec Of Maryland
Introduced 01/14/2000
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 01/14/2000
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 11/14/2006
Landline
Baltimore
Level 3 Communications
Introduced 10/13/1999
Landline
Randallstown
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Wireless
Chesapeake City
Cellco Partnership DBA Verizon Wireless
Introduced 09/16/2004
Landline
Bel Air
Level 3 Communications
Introduced 10/13/1999
Landline
Arbutus
Allegiance Telecom
Introduced 06/13/2000
Landline
Annapolis
Level 3 Communications
Introduced 10/13/1999
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 06/13/2000
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 12/06/2011
Landline
Glen Burnie
Verizon Maryland
Introduced 05/18/1998
Landline
Columbia
Us Lec Of Maryland
Introduced 01/14/2000
Landline
Ellicott City
Us Lec Of Maryland
Introduced 01/14/2000
Landline
Arbutus
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
Baltimore
Allegiance Telecom
Introduced 02/21/2001
Landline
Columbia
Us Lec Of Maryland
Introduced 06/13/2000
Landline
Baltimore
Xo Maryland
Introduced 06/30/2001
Landline
Essex
Us Lec Of Maryland
Introduced 01/14/2000
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 08/25/2011
Landline
Middle River
Xo Maryland
Introduced 01/14/2000
Landline
Churchville
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Columbia
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Crofton
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Darlington
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Dundalk
Xo Maryland
Introduced 01/14/2000
Landline
Edgewood
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Baltimore
Allegiance Telecom
Introduced 10/13/1999
Landline
Cockeysville
Us Lec Of Maryland
Introduced 03/03/2001
Landline
Reisterstown
Global Crossing Local Services-md
Introduced 07/22/1999
Wireless
Glen Burnie
Cellco Partnership DBA Verizon Wireless
Introduced 05/07/2009
Landline
Elkridge
Xo Maryland
Introduced 01/14/2000
Landline
Elkton
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Sparks Glencoe
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Essex
Xo Maryland
Introduced 01/14/2000
Landline
Severna Park
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Sherwood Forest
Global Crossing Local Services-md
Introduced 07/22/1999
Landline
Baltimore
Global Crossing Local Services-md
Introduced 07/22/1999
Wireless
Essex
Omnipoint Communications Cap Operations
Introduced 07/23/2001
Landline
Fallston
Ctc Communications Corp.
Introduced 01/14/2000
Wireless
Catonsville
Cellco Partnership DBA Verizon Wireless
Introduced 02/15/2007
Landline
Annapolis
Paetec Communications
Introduced 05/18/1998
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 02/27/1999
Landline
Westminster
Cavalier Telephone Mid-atlantic
Introduced 10/31/2000
Landline
Fork
Ctc Communications Corp.
Introduced 01/14/2000
Landline
West River
Cavalier Telephone Mid-atlantic
Introduced 10/31/2000
Wireless
Towson
Leap Wireless Intl DBA Cricket Comm
Introduced 02/27/2009
Landline
Sykesville
Cavalier Telephone Mid-atlantic
Introduced 10/31/2000
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 10/13/1999
Landline
Catonsville
Verizon Maryland
Introduced 08/14/1998
Wireless
Towson
Leap Wireless Intl DBA Cricket Comm
Introduced 02/27/2009
Wireless
Salisbury
Cellco Partnership DBA Verizon Wireless
Introduced 07/23/2001
Wireless
Catonsville
Cellco Partnership DBA Verizon Wireless
Introduced 05/10/2007
Landline
Bel Air
Cavalier Telephone Mid-atlantic
Introduced 10/31/2000
Wireless
Fallston
Cellco Partnership DBA Verizon Wireless
Introduced 04/11/2005
Wireless
Glen Burnie
Cellco Partnership DBA Verizon Wireless
Introduced 06/13/2000
Wireless
Bel Air
Cellco Partnership DBA Verizon Wireless
Introduced 06/05/2009
Landline
Baltimore
Teleport Communications America
Introduced 08/14/1998
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 02/27/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 02/27/1999
Wireless
Glen Burnie
Sprint Spectrum L.p.
Introduced 08/20/2002
Wireless
Prince Frederick
Cellco Partnership DBA Verizon Wireless
Introduced 03/06/2002
Landline
Fork
Broadwing Communications. LLC
Introduced 02/21/2001
Landline
Middle River
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
Baltimore
Verizon Maryland
Introduced 09/26/2006
Landline
Glen Burnie
Xo Maryland
Introduced 01/14/2000
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 08/14/1998
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 05/08/2008
Wireless
Catonsville
New Cingular Wireless PCS - DC
Introduced 08/16/2005
Landline
Towson
Us Lec Of Maryland
Introduced 01/14/2000
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 07/18/2011
Landline
Odenton
Verizon Maryland
Introduced 11/09/2011
Wireless
Baltimore
Leap Wireless Intl DBA Cricket Comm
Introduced 10/14/2009
Landline
Catonsville
Omnipoint Communications Cap Operations
Introduced 06/25/2005
Landline
Baltimore
Xo Maryland
Introduced 02/21/2001
Landline
Ellicott City
Global Naps South
Introduced 01/14/2000
Landline
Hampstead
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Bel Air
Us Lec Of Maryland
Introduced 05/18/2001
Landline
Pikesville
Broadwing Communications. LLC
Introduced 05/18/2001
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 11/08/2006
Landline
Bel Air
Verizon Maryland
Introduced 10/13/1999
Landline
Jarrettsville
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Millersville
Ctc Communications Corp.
Introduced 01/14/2000
Landline
North Beach
Ctc Communications Corp.
Introduced 01/14/2000
Landline
New Windsor
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Baltimore
Teleport Communications America
Introduced 08/14/1998
Landline
Sparrows Point
Us Lec Of Maryland
Introduced 06/20/2001
Landline
Reisterstown
Allegiance Telecom
Introduced 02/20/2001
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 07/08/2011
Landline
Towson
Verizon Maryland
Introduced 05/28/2002
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 05/18/2001
Landline
Jessup
Verizon Maryland
Introduced 08/28/2008
Wireless
Bel Air
New Cingular Wireless PCS - DC
Introduced 10/13/1999
Landline
Columbia
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
Randallstown
Tw Telecom Of Maryland LLC
Introduced 10/13/1999
Landline
Woodlawn
Global Naps South
Introduced 01/14/2000
Landline
West River
Global Naps South
Introduced 01/14/2000
Landline
Baltimore
Comcast Phone Of Northern Maryland
Introduced 06/30/2001
Landline
Jessup
Cavalier Telephone Mid-atlantic
Introduced 10/13/1999
Landline
Sparks Glencoe
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
Woodlawn
Verizon Maryland
Introduced 06/30/2001
Landline
Ocean City
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Landline
Nanticoke
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Wireless
Chestertown
Level 3 Communications
Introduced 05/23/2012
Wireless
Catonsville
New Cingular Wireless PCS - DC
Introduced 01/15/2001
Landline
Delmar
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Landline
Catonsville
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
New Windsor
Teleport Communications America
Introduced 02/27/1999
Landline
Parkton
Teleport Communications America
Introduced 02/27/1999
Landline
Brooklyn
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
North East
Teleport Communications America
Introduced 02/27/1999
Landline
Randallstown
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 06/20/2001
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 03/15/2001
Landline
Parkville
Verizon Maryland
Introduced 08/20/2000
Landline
Baltimore
Teleport Communications America
Introduced 08/14/1998
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 09/27/2010
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 06/05/2009
Landline
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 12/19/2006
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 04/09/2007
Wireless
Prince Frederick
Cellco Partnership DBA Verizon Wireless
Introduced 10/08/2008
Landline
Severn
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Wireless
Fallston
Sprint Spectrum L.p.
Introduced 05/10/2005
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 09/08/2009
Landline
Severn
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
Cockeysville
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 06/13/2000
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 01/15/2001
Landline
Baltimore
Allegiance Telecom
Introduced 06/13/2000
Landline
Perryville
Teleport Communications America
Introduced 02/27/1999
Wireless
Severna Park
Sprint Spectrum L.p.
Introduced 04/20/2001
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 01/14/2000
Landline
Dundalk
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
Catonsville
Global Naps South
Introduced 01/14/2000
Landline
Odenton
Teleport Communications America
Introduced 08/14/1998
Wireless
Annapolis
Cellco Partnership DBA Verizon Wireless
Introduced 08/10/2011
Landline
Arbutus
Xo Maryland
Introduced 10/31/2000
Landline
Pasadena
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
Baltimore
Xo Maryland
Introduced 10/31/2000
Landline
Odenton
Cavalier Telephone Mid-atlantic
Introduced 05/10/2001
Landline
Cockeysville
Xo Maryland
Introduced 01/14/2000
Landline
Crisfield
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Unknown
Local Access LLC
Introduced 06/11/2014
Landline
Baltimore
Tw Telecom Of Maryland LLC
Introduced 08/20/2000
Landline
Arbutus
Cavalier Telephone Mid-atlantic
Introduced 10/13/1999
Landline
Baltimore
Xo Maryland
Introduced 10/31/2000
Landline
Reisterstown
Cavalier Telephone Mid-atlantic
Introduced 10/31/2000
Wireless
Columbia
Peerless Network Of Maryland
Introduced 09/19/2012
Landline
Columbia
Sprint Spectrum L.p.
Introduced 09/30/2011
Landline
North East
Cavalier Telephone (mid-atlantic)
Introduced 02/27/1999
Landline
Annapolis
Cavalier Telephone Mid-atlantic
Introduced 10/31/2000
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 09/14/2005
Landline
Columbia
Us Lec Of Maryland
Introduced 03/05/2008
Landline
Jarrettsville
Cavalier Telephone Mid-atlantic
Introduced 10/31/2000
Landline
Elkton
Xo Maryland
Introduced 11/27/2012
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 07/06/2009
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 03/09/2001
Landline
Brooklyn
Sprint Spectrum L.p.
Introduced 10/06/2011
Landline
Easton
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Landline
Baltimore
Paetec Communications
Introduced 01/14/2000
Landline
Towson
Sprint Spectrum L.p.
Introduced 10/06/2011
Landline
Bishopville
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Landline
Berlin
Cavalier Telephone (mid-atlantic)
Introduced 11/20/1998
Landline
Baltimore
Paetec Communications
Introduced 01/14/2000
Landline
Baltimore
Paetec Communications
Introduced 01/14/2000
Landline
Port Deposit
Teleport Communications America
Introduced 02/27/1999
Landline
Westminster
Teleport Communications America
Introduced 02/27/1999
Landline
Baltimore
AT&T Local
Introduced 10/31/2001
Landline
Severn
Verizon Maryland
Introduced 05/10/1999
Wireless
Salisbury
New Cingular Wireless PCS - DC
Introduced 02/27/1999
Wireless
Salisbury
New Cingular Wireless PCS - DC
Introduced 11/20/1998
Landline
Baltimore
Paetec Communications
Introduced 10/31/2001
Landline
Baltimore
Paetec Communications
Introduced 01/14/2000
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 07/23/2001
Landline
Baltimore
Telcove Operations
Introduced 02/03/2005
Landline
Columbia
Mci Worldcom Communications
Introduced 03/29/2011
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 08/20/2000
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 04/07/2008
Wireless
Reisterstown
Sprint Spectrum L.p.
Introduced 07/02/2002
Wireless
Columbia
Cellco Partnership DBA Verizon Wireless
Introduced 11/20/1998
Landline
Easton
Level 3 Communications
Introduced 02/22/2002
Landline
Port Deposit
Core Communications
Introduced 02/22/2002
Landline
Millersville
Cavalier Telephone Mid-atlantic
Introduced 05/11/2001
Landline
Baltimore
Cavalier Telephone Mid-atlantic
Introduced 03/03/2001
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 06/08/2010
Landline
Woodlawn
Cavalier Telephone Mid-atlantic
Introduced 05/11/2001
Landline
Bel Air
Cellco Partnership DBA Verizon Wireless
Introduced 10/17/2001
Landline
Jessup
Allegiance Telecom
Introduced 10/31/2000
Wireless
Salisbury
Cellco Partnership DBA Verizon Wireless
Introduced 06/09/2010
Landline
Elkridge
Verizon Maryland
Introduced 02/27/1999
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 08/20/2000
Landline
Elkridge
Cavalier Telephone Mid-atlantic
Introduced 05/11/2001
Landline
Annapolis
AT&T Local
Introduced 08/14/1998
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 10/29/2007
Landline
Aberdeen
AT&T Local
Introduced 08/14/1998
Wireless
Towson
Omnipoint Communications Cap Operations
Introduced 05/28/2008
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 01/10/2001
Landline
Baltimore
Omnipoint Communications Cap Operations
Introduced 05/18/1998
Wireless
Glen Burnie
Omnipoint Communications Cap Operations
Introduced 08/21/2008
Wireless
Catonsville
New Cingular Wireless PCS - DC
Introduced 07/23/2001
Landline
Columbia
Us Lec Of Maryland
Introduced 05/18/2005
Landline
Reisterstown
Cavalier Telephone Mid-atlantic
Introduced 05/11/2001
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 05/18/2001
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 09/16/2008
Landline
Pasadena
Verizon Maryland
Introduced 03/03/2001
Wireless
Prince Frederick
Cellco Partnership DBA Verizon Wireless
Introduced 09/08/2010
Landline
Essex
Cavalier Telephone Mid-atlantic
Introduced 07/23/2001
Landline
Baltimore
Allegiance Telecom
Introduced 08/20/2000
Landline
Baltimore
Global Naps South
Introduced 08/20/2000
Landline
Baltimore
Bandwidth.com Clec
Introduced 01/17/2014
Landline
Essex
Verizon Maryland
Introduced 08/20/2000
Landline
Laurel
Verizon Maryland
Introduced 05/18/1998
Landline
Aberdeen
Xo Maryland
Introduced 06/30/2001
Landline
Columbia
Us Lec Of Maryland
Introduced 07/23/2001
Landline
Pasadena
Xo Maryland
Introduced 01/14/2000
Landline
Annapolis
Xo Maryland
Introduced 01/14/2000
Wireless
Salisbury
Cellco Partnership DBA Verizon Wireless
Introduced 02/27/1999
Landline
Baltimore
Teleport Communications America
Introduced 02/27/1999
Landline
Arbutus
Global Naps South
Introduced 01/14/2000
Wireless
Easton
Cellco Partnership DBA Verizon Wireless
Introduced 06/13/2000
Landline
Bel Air
Ctc Communications Corp.
Introduced 01/14/2000
Landline
Aberdeen
Xo Maryland
Introduced 01/14/2000
Wireless
Westminster
New Cingular Wireless PCS - DC
Introduced 08/20/2000
Wireless
Glen Burnie
Sprint Spectrum L.p.
Introduced 11/19/2001
Wireless
Towson
New Cingular Wireless PCS - DC
Introduced 08/20/2000
Landline
Brooklyn
Verizon Maryland
Introduced 10/18/2007
Landline
Baltimore
Xo Maryland
Introduced 10/31/2000
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 01/14/2000
Landline
Baltimore
Xo Maryland
Introduced 10/31/2000
Landline
Baltimore
Xo Maryland
Introduced 10/31/2000
Landline
Baltimore
Xo Maryland
Introduced 10/31/2000
Landline
Towson
Tw Telecom Of Maryland LLC
Introduced 05/10/1999
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 07/23/2001
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 01/31/2011
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 07/22/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 07/22/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 07/22/1999
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 07/22/1999
Wireless
Glen Burnie
Omnipoint Communications Cap Operations
Introduced 07/24/2008
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 03/08/2006
Wireless
Fallston
Sprint Spectrum L.p.
Introduced 08/20/2000
Landline
Annapolis
Bandwidth.com Clec
Introduced 04/04/2014
Unknown
Level 3 Communications
Introduced 06/13/2014
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 09/04/2008
Wireless
Columbia
Cellco Partnership DBA Verizon Wireless
Introduced 01/15/2001
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 09/14/2007
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 06/15/2010
Landline
Baltimore
Xo Maryland
Introduced 10/31/2000
Landline
Severna Park
Allegiance Telecom
Introduced 10/31/2000
Landline
Baltimore
Allegiance Telecom
Introduced 10/31/2000
Landline
Pasadena
Level 3 Communications
Introduced 12/30/2005
Landline
Baltimore
Paetec Communications
Introduced 05/18/1998
Wireless
Westminster
Sprint Spectrum L.p.
Introduced 07/13/2010
Wireless
Annapolis
Sprint Spectrum L.p.
Introduced 08/14/1998
Wireless
Towson
Cellco Partnership DBA Verizon Wireless
Introduced 07/13/2006
Wireless
Towson
Omnipoint Communications Cap Operations
Introduced 05/18/2001
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 11/29/2006
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 06/25/2010
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 11/20/1998
Landline
Ellicott City
Cavalier Telephone Mid-atlantic
Introduced 05/11/2001
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 06/13/2000
Landline
Catonsville
Cavalier Telephone Mid-atlantic
Introduced 08/21/2001
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 11/20/1998
Landline
Baltimore
Level 3 Communications
Introduced 07/22/1999
Landline
Arbutus
Us Lec Of Maryland
Introduced 03/03/2001
Landline
Towson
Cavalier Telephone Mid-atlantic
Introduced 10/13/1999
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 12/11/2008
Landline
Baltimore
Xo Maryland
Introduced 01/14/2000
Landline
Annapolis
Us Lec Of Maryland
Introduced 09/24/2001
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 07/22/1999
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 04/17/2006
Wireless
Catonsville
New Cingular Wireless PCS - DC
Introduced 05/04/2005
Landline
Baltimore
Verizon Maryland
Introduced 07/22/1999
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 03/10/2011
Landline
Havre De Grace
Verizon Maryland
Introduced 07/22/1999
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 02/13/2006
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 02/27/1999
Landline
Towson
New Cingular Wireless PCS - DC
Introduced 03/03/2001
Wireless
Towson
Cellco Partnership DBA Verizon Wireless
Introduced 10/12/2006
Landline
Baltimore
Sprint Spectrum L.p.
Introduced 03/03/2001
Landline
Towson
Verizon Maryland
Introduced 05/18/2001
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 09/24/2001
Wireless
Catonsville
Omnipoint Communications Cap Operations
Introduced 08/21/2001
Wireless
Annapolis
New Cingular Wireless PCS - DC
Introduced 08/21/2001
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 07/27/2010
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 11/19/2001
Landline
Aberdeen
Lightwave Communications
Introduced 05/20/2005
Landline
Ocean City
Core Communications
Introduced 07/02/2002
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 06/13/2000
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 06/13/2000
Wireless
Salisbury
Omnipoint Communications Cap Operations
Introduced 06/13/2000
Wireless
Catonsville
New Cingular Wireless PCS - DC
Introduced 05/04/2005
Landline
Aberdeen
Verizon Maryland
Introduced 08/13/2009
Wireless
Towson
Cellco Partnership DBA Verizon Wireless
Introduced 10/07/2011
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 08/09/2010
Wireless
Columbia
Sprint Spectrum L.p.
Introduced 12/19/2001
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 04/19/2002
Wireless
Bel Air
Sprint Spectrum L.p.
Introduced 07/02/2002
Landline
Glen Burnie
Paetec Communications
Introduced 10/13/1999
Landline
Baltimore
Verizon Maryland
Introduced 07/22/1999
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 06/12/2006
Landline
Pikesville
Tw Telecom Of Maryland LLC
Introduced 05/10/1999
Wireless
Annapolis
Sprint Spectrum L.p.
Introduced 11/20/1998
Landline
Baltimore
Cavalier Telephone Mid-atlantic
Introduced 03/03/2001
Landline
Pikesville
Broadvox-clec
Introduced 02/23/2010
Landline
Baltimore
Cavalier Telephone Mid-atlantic
Introduced 03/03/2001
Landline
Annapolis
New Cingular Wireless PCS - DC
Introduced 03/03/2001
Landline
Bel Air
Sprint Spectrum L.p.
Introduced 03/03/2001
Landline
North East
Level 3 Communications
Introduced 10/13/1999
Landline
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 03/03/2001
Landline
Baltimore
Verizon Maryland
Introduced 03/03/2001
Landline
Salisbury
AT&T Local
Introduced 11/20/1998
Wireless
Reisterstown
Sprint Spectrum L.p.
Introduced 09/26/2006
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 02/01/2011
Landline
Baltimore
AT&T Local
Introduced 08/14/1998
Landline
Baltimore
Cavalier Telephone Mid-atlantic
Introduced 03/03/2001
Landline
Baltimore
Verizon Maryland
Introduced 08/14/1998
Landline
Baltimore
AT&T Local
Introduced 08/14/1998
Landline
Harmans
Cavalier Telephone Mid-atlantic
Introduced 05/05/2010
Landline
Princess Anne
Cavalier Telephone (mid-atlantic)
Introduced 01/06/2011
Wireless
Glen Burnie
Omnipoint Communications Cap Operations
Introduced 04/20/2001
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 08/10/2011
Landline
Baltimore
Xo Maryland
Introduced 10/31/2000
Landline
New Windsor
Bandwidth.com Clec
Introduced 08/11/2011
Landline
Baltimore
Xo Maryland
Introduced 10/31/2000
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 06/30/2011
Wireless
Towson
Cellco Partnership DBA Verizon Wireless
Introduced 04/09/2007
Landline
Baltimore
AT&T Local
Introduced 08/14/1998
Wireless
Baltimore
Leap Wireless Intl DBA Cricket Comm
Introduced 04/12/2011
Landline
Pikesville
Level 3 Communications
Introduced 12/08/2005
Landline
Elkridge
Broadwing Communications. LLC
Introduced 03/03/2001
Wireless
Towson
Cellco Partnership DBA Verizon Wireless
Introduced 05/23/2012
Landline
Towson
Cavalier Telephone Mid-atlantic
Introduced 08/21/2001
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 01/06/2011
Wireless
Bel Air
Cellco Partnership DBA Verizon Wireless
Introduced 09/07/2011
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 10/17/2001
Wireless
Annapolis
Sprint Spectrum L.p.
Introduced 08/12/2011
Landline
Severna Park
Peerless Network Of Maryland
Introduced 09/20/2012
Wireless
Elkton
Cellco Partnership DBA Verizon Wireless
Introduced 04/20/2001
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 06/29/2011
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 08/09/2006
Wireless
Bel Air
New Cingular Wireless PCS - DC
Introduced 04/20/2001
Landline
Towson
Core Communications
Introduced 07/02/2002
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 06/30/2011
Landline
Reisterstown
Teleport Communications America
Introduced 02/27/1999
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 09/07/2011
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 08/22/2011
Wireless
Columbia
Broadvox-clec
Introduced 10/07/2011
Landline
Taneytown
Teleport Communications America
Introduced 02/27/1999
Landline
Baltimore
Cavalier Telephone Mid-atlantic
Introduced 03/03/2001
Landline
Sykesville
Teleport Communications America
Introduced 02/27/1999
Landline
Baltimore
Paetec Communications
Introduced 10/13/1999
Landline
Edgewood
Atx Telecommunications Services, Ltd
Introduced 02/07/2006
Landline
Baltimore
Cavalier Telephone Mid-atlantic
Introduced 05/11/2001
Wireless
Annapolis
Cellco Partnership DBA Verizon Wireless
Introduced 07/06/2009
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 02/24/2006
Landline
Annapolis
Broadwing Communications. LLC
Introduced 08/20/2000
Landline
Baltimore
Broadwing Communications. LLC
Introduced 08/20/2000
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 09/24/2001
Wireless
Pikesville
Omnipoint Communications Cap Operations
Introduced 04/20/2001
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 04/06/2011
Landline
Baltimore
Mci Worldcom Communications
Introduced 10/24/2011
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 08/22/2011
Landline
Cockeysville
Teleport Communications America
Introduced 04/20/2004
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 12/04/2007
Wireless
Towson
New Cingular Wireless PCS - DC
Introduced 07/31/2006
Landline
Union Bridge
Teleport Communications America
Introduced 02/27/1999
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 08/06/2007
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 09/23/2002
Landline
Pikesville
Cavalier Telephone Mid-atlantic
Introduced 08/21/2001
Wireless
Elkton
New Cingular Wireless PCS - DC
Introduced 09/07/2011
Landline
Severna Park
Teleport Communications America
Introduced 08/14/1998
Landline
Baltimore
Teleport Communications America
Introduced 08/14/1998
Landline
Salisbury
Comcast Phone Of Northern Maryland
Introduced 06/08/2006
Wireless
Elkton
New Cingular Wireless PCS - DC
Introduced 07/02/2002
Landline
Parkville
Xo Maryland
Introduced 01/14/2000
Landline
Perryville
Ctc Communications Corp.
Introduced 01/14/2000
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 08/22/2011
Landline
Annapolis
Comcast Phone Of Northern Maryland
Introduced 06/28/2006
Landline
Annapolis
Global Crossing Local Services-md
Introduced 07/22/1999
Wireless
Westminster
Cellco Partnership DBA Verizon Wireless
Introduced 09/07/2011
Wireless
Salisbury
Cellco Partnership DBA Verizon Wireless
Introduced 09/07/2011
Landline
Baltimore
Paetec Communications
Introduced 07/06/2005
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 03/13/2006
Wireless
Baltimore
New Cingular Wireless PCS - DC
Introduced 01/14/2000
Landline
Baltimore
AT&T Local
Introduced 08/14/1998
Wireless
Glen Burnie
Cellco Partnership DBA Verizon Wireless
Introduced 10/07/2011
Wireless
Glen Burnie
Cellco Partnership DBA Verizon Wireless
Introduced 09/14/2007
Wireless
Baltimore
Halo Wireless Services
Introduced 12/01/2011
Landline
North Beach
Level 3 Communications
Introduced 05/12/2006
Wireless
Baltimore
Sprint Spectrum L.p.
Introduced 06/21/2006
Wireless
Fallston
Cellco Partnership DBA Verizon Wireless
Introduced 09/13/2006
Landline
North East
Verizon Maryland
Introduced 04/20/2001
Wireless
Prince Frederick
New Cingular Wireless PCS - DC
Introduced 07/22/1999
Landline
Essex
Cavalier Telephone Mid-atlantic
Introduced 05/11/2001
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 11/21/2011
Landline
Taneytown
Bandwidth.com Clec
Introduced 02/16/2011
Wireless
Cambridge
Us Lec Of Maryland
Introduced 11/21/2011
Landline
Baltimore
Xo Maryland
Introduced 06/30/2001
Landline
Westminster
Teleport Communications America
Introduced 02/27/1999
Wireless
Prince Frederick
New Cingular Wireless PCS - DC
Introduced 03/03/2001
Unknown
Baltimore-washington Telephone (bwt)
Introduced 10/17/2005
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 10/12/2006
Wireless
Salisbury
Cellco Partnership DBA Verizon Wireless
Introduced 11/21/2011
Wireless
Columbia
Cellco Partnership DBA Verizon Wireless
Introduced 11/21/2011
Wireless
Catonsville
New Cingular Wireless PCS - DC
Introduced 10/13/1999
Wireless
Fallston
Cellco Partnership DBA Verizon Wireless
Introduced 11/21/2011
Landline
Baltimore
Ymax Communications Corp.
Introduced 05/30/2007
Wireless
Baltimore
Omnipoint Communications Cap Operations
Introduced 07/02/2002
Landline
Baltimore
Verizon Maryland
Introduced 10/31/2000
Wireless
Randallstown
Omnipoint Communications Cap Operations
Introduced 06/20/2001
Wireless
Baltimore
Cellco Partnership DBA Verizon Wireless
Introduced 07/13/2006
Landline
Bel Air
AT&T Local
Introduced 11/20/1998
Landline
Centreville
Level 3 Communications
Introduced 06/08/2006
Landline
Glen Burnie
Cavalier Telephone Mid-atlantic
Introduced 05/11/2001
Landline
Baltimore
Bandwidth.com Clec
Introduced 02/04/2011
Wireless
Towson
Cellco Partnership DBA Verizon Wireless
Introduced 12/01/2011
Landline
Baltimore
Level 3 Communications
Introduced 01/14/2000
Wireless
Elkton
Metro PCS
Introduced 12/13/2010
Wireless
Annapolis
New Cingular Wireless PCS - DC
Introduced 11/20/1998
Wireless
Annapolis
New Cingular Wireless PCS - DC
Introduced 08/20/2000
Wireless
Catonsville
New Cingular Wireless PCS - DC
Introduced 11/20/1998
Landline
Baltimore
Verizon Maryland
Introduced 03/03/2001
Landline
Parkville
Verizon Maryland
Introduced 03/19/2001

Heavily Reported Numbers

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Most Searched Numbers

Prefixes with the Most Subscribers