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925 Area Code

About Area Code 925

State: California
Major City: Concord
Timezone: Pacific (10:34pm)
Short URL: allareacodes.com/925
Download: Download this data

Area Code 925 Map

  • Antioch, CA
  • Bay Point, CA
  • Brentwood, CA
  • Concord, CA
  • Danville, CA
  • Dublin, CA
  • Lafayette, CA
  • Livermore, CA
  • Martinez, CA
  • Oakley, CA
  • Pittsburg, CA
  • Pleasant Hill, CA
  • Pleasanton, CA
  • San Ramon, CA
  • Walnut Creek, CA

More About Area Code 925

Area code 925 was first put in service March 14, 1998. Currently, the largest city it serves is Concord, CA, and it overlaps coverage areas with area code .

Overview of Active Prefixes

Assigned to Carrier

Usage

Carriers

Active Phone Number Prefixes

Prefix
Usage
Primary City
Carrier
Introduced
Wireless
Pleasanton
Cellco Partnership DBA Verizon Wireless
Introduced 05/18/1998
Landline
Pleasanton
Mpower Communications Corp
Introduced 05/18/1998
Wireless
Pleasanton
Sprint Spectrum L.p.
Introduced 05/10/1999
Wireless
Pittsburg
New Cingular Wireless PCS
Introduced 02/22/2002
Wireless
Antioch
American Messaging Services
Introduced 05/10/1999
Wireless
Antioch
Cellco Partnership DBA Verizon Wireless
Introduced 08/29/2007
Wireless
Concord
Sprint Spectrum L.p.
Introduced 10/18/2001
Landline
Danville
Teleport Communications Group - San Francisco
Introduced 05/10/1999
Wireless
Pleasanton
Sprint Spectrum L.p.
Introduced 08/14/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
New Cingular Wireless PCS
Introduced 05/10/1999
Wireless
Walnut Creek
Usa Mobility Wireless
Introduced 11/20/1998
Landline
Livermore
Broadwing Communications
Introduced 05/10/1999
Wireless
San Ramon
New Cingular Wireless PCS
Introduced 11/20/1998
Landline
Danville
Broadwing Communications
Introduced 05/10/1999
Landline
Pleasanton
Broadwing Communications
Introduced 05/10/1999
Landline
Antioch
Broadwing Communications
Introduced 05/10/1999
Wireless
Walnut Creek
American Messaging Services
Introduced 05/10/1999
Wireless
Walnut Creek
33 Wireless Inc.
Introduced 07/22/1999
Landline
Concord
Cf Communications DBA Telekenex
Introduced 09/09/2010
Landline
Pleasanton
Mcimetro Access Transmission Services LLC
Introduced 05/10/1999
Wireless
Pleasanton
Pacific Bell
Introduced 05/18/1998
Wireless
Pleasanton
Pacific Bell
Introduced 05/18/1998
Landline
Fremont
Xo California
Introduced 02/27/1999
Wireless
Pleasanton
Pacific Bell
Introduced 05/18/1998
Landline
Martinez
Pacific Bell
Introduced 05/18/1998
Landline
Martinez
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Level 3 Communications
Introduced 10/13/1999
Landline
Martinez
Level 3 Communications
Introduced 05/10/1999
Landline
Pittsburg
Level 3 Communications
Introduced 05/10/1999
Landline
Sunol
Level 3 Communications
Introduced 05/10/1999
Landline
Antioch
Level 3 Communications
Introduced 05/10/1999
Landline
Moraga
Level 3 Communications
Introduced 05/10/1999
Landline
San Ramon
Broadwing Communications
Introduced 03/03/2001
Landline
Antioch
Xo California
Introduced 07/22/1999
Landline
Antioch
Comcast Phone Of California
Introduced 10/31/2008
Landline
Walnut Creek
Peerless Network Of California
Introduced 03/25/2013
Landline
Brentwood
Pacific Bell
Introduced 05/10/1999
Landline
San Ramon
Mcimetro Access Transmission Services LLC
Introduced 05/18/1998
Landline
San Ramon
Pacific Bell
Introduced 05/10/1999
Landline
Livermore
Pacific Bell
Introduced 05/10/1999
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
Livermore
Pacific Bell
Introduced 05/10/1999
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Moraga
Pacific Bell
Introduced 05/10/1999
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
Pleasanton
Pacific Bell
Introduced 05/10/1999
Wireless
Concord
Sprint Spectrum L.p.
Introduced 05/10/1999
Wireless
Pleasanton
Pacific Bell
Introduced 05/10/1999
Landline
Pittsburg
Pacific Bell
Introduced 05/10/1999
Landline
Orinda
Pacific Bell
Introduced 05/18/1998
Landline
Orinda
Pacific Bell
Introduced 05/18/1998
Landline
Orinda
Mci Worldcom Communications, Ca
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Landline
Orinda
Mcimetro Access Transmission Services LLC
Introduced 05/18/1998
Landline
Orinda
Pacific Bell
Introduced 05/18/1998
Landline
Orinda
Xo California
Introduced 02/27/1999
Wireless
Walnut Creek
Sprint Spectrum L.p.
Introduced 05/10/1999
Landline
Pittsburg
Pacific Bell
Introduced 05/10/1999
Landline
Oakland
Global Crossing Local Services-ca
Introduced 05/10/1999
Landline
Danville
Global Crossing Local Services-ca
Introduced 05/10/1999
Landline
Pleasanton
Global Crossing Local Services-ca
Introduced 05/10/1999
Landline
Concord
Global Crossing Local Services-ca
Introduced 05/10/1999
Landline
Pittsburg
Xo California
Introduced 07/22/1999
Landline
Moraga
Xo California
Introduced 07/22/1999
Landline
Martinez
Xo California
Introduced 07/22/1999
Landline
Concord
Broadwing Communications
Introduced 05/10/1999
Landline
Pleasanton
Teleport Communications Group - San Francisco
Introduced 05/10/1999
Landline
Danville
Level 3 Communications
Introduced 05/10/1999
Landline
Livermore
Xo California
Introduced 07/22/1999
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
Clayton
Xo California
Introduced 07/22/1999
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
Walnut Creek
Comcast Phone Of California
Introduced 10/24/2013
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Landline
Antioch
Pac - West Telecomm
Introduced 05/10/1999
Landline
Lafayette
Mcimetro Access Transmission Services LLC
Introduced 05/18/1998
Landline
Lafayette
Pacific Bell
Introduced 05/18/1998
Landline
Lafayette
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
New Cingular Wireless PCS
Introduced 05/10/1999
Wireless
Walnut Creek
New Cingular Wireless PCS
Introduced 05/10/1999
Wireless
Walnut Creek
Pacific Bell
Introduced 07/22/1999
Landline
Concord
Pacific Bell
Introduced 07/22/1999
Landline
Walnut Creek
Ymax Communications Corp.
Introduced 02/23/2009
Landline
Livermore
Xo California
Introduced 07/22/1999
Landline
Pittsburg
Xo California
Introduced 07/22/1999
Landline
Livermore
Comcast Phone Of California
Introduced 05/18/1998
Landline
Martinez
Pac - West Telecomm
Introduced 07/22/1999
Landline
Livermore
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Landline
Lafayette
Xo California
Introduced 02/27/1999
Landline
Lafayette
Mci Worldcom Communications, Ca
Introduced 05/18/1998
Landline
Lafayette
Pacific Bell
Introduced 05/18/1998
Landline
Walnut Creek
O1 Communications
Introduced 05/10/1999
Landline
Antioch
O1 Communications
Introduced 05/10/1999
Landline
San Ramon
Tw Telecom Of California Lp
Introduced 05/10/1999
Landline
Antioch
Tw Telecom Of California Lp
Introduced 05/10/1999
Landline
Walnut Creek
Level 3 Communications
Introduced 05/10/1999
Landline
Concord
Tw Telecom Of California Lp
Introduced 05/10/1999
Landline
San Ramon
Tw Telecom Of California Lp
Introduced 05/10/1999
Landline
Brentwood
Tw Telecom Of California Lp
Introduced 05/10/1999
Landline
Walnut Creek
Tw Telecom Of California Lp
Introduced 05/10/1999
Landline
Lafayette
Tw Telecom Of California Lp
Introduced 05/10/1999
Wireless
Antioch
Usa Mobility Wireless
Introduced 05/18/1998
Landline
Martinez
Pacific Bell
Introduced 05/18/1998
Landline
Danville
Pacific Bell
Introduced 05/18/1998
Landline
Livermore
Tw Telecom Of California Lp
Introduced 05/10/1999
Landline
Walnut Creek
Level 3 Communications
Introduced 05/10/1999
Landline
Walnut Creek
O1 Communications
Introduced 05/10/1999
Landline
Walnut Creek
Tw Telecom Of California Lp
Introduced 05/10/1999
Landline
Sunol
T-mobile Usa
Introduced 05/10/1999
Landline
Moraga
U.s. Telepacific Corp.
Introduced 03/27/2001
Wireless
Livermore
New Cingular Wireless PCS
Introduced 11/30/2001
Landline
Walnut Creek
Bandwidth.com Clec
Introduced 05/10/2011
Wireless
Walnut Creek
New Cingular Wireless PCS
Introduced 11/20/1998
Wireless
Walnut Creek
Cellco Partnership DBA Verizon Wireless
Introduced 08/21/2002
Wireless
Pittsburg
T-mobile Usa
Introduced 12/28/2001
Landline
Concord
Level 3 Communications
Introduced 05/29/2013
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
New Cingular Wireless PCS
Introduced 11/30/2001
Landline
Antioch
U.s. Telepacific Corp.
Introduced 07/17/2001
Landline
Concord
Peerless Network Of California
Introduced 10/04/2012
Wireless
Walnut Creek
American Messaging (am)
Introduced 07/22/1999
Wireless
Concord
Cellco Partnership DBA Verizon Wireless
Introduced 07/19/2011
Landline
Martinez
Pacific Bell
Introduced 05/18/1998
Wireless
San Ramon
New Cingular Wireless PCS
Introduced 12/28/2001
Wireless
Livermore
Cellco Partnership DBA Verizon Wireless
Introduced 01/28/2002
Landline
Concord
Bandwidth.com Clec
Introduced 07/22/2011
Wireless
Livermore
Metro PCS
Introduced 09/21/2001
Wireless
Walnut Creek
Usa Mobility Wireless
Introduced 05/18/1998
Wireless
Antioch
American Messaging (am)
Introduced 06/13/2000
Wireless
Antioch
American Messaging (am)
Introduced 05/10/1999
Wireless
Pleasanton
American Messaging Services
Introduced 05/10/1999
Landline
Livermore
Mpower Communications Corp
Introduced 05/18/1998
Wireless
Danville
American Messaging (am)
Introduced 07/22/1999
Wireless
Concord
American Messaging (am)
Introduced 07/22/1999
Wireless
Livermore
American Messaging (am)
Introduced 07/22/1999
Wireless
Concord
New Cingular Wireless PCS
Introduced 01/28/2002
Landline
Concord
Teleport Communications Group - San Francisco
Introduced 08/14/1998
Landline
Antioch
Comcast Phone Of California
Introduced 09/13/2011
Wireless
Pleasanton
Sprint Spectrum L.p.
Introduced 05/10/1999
Wireless
Pleasanton
Sprint Spectrum L.p.
Introduced 05/10/1999
Wireless
Fremont
New Cingular Wireless PCS
Introduced 01/28/2002
Wireless
Antioch
New Cingular Wireless PCS
Introduced 01/28/2002
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Walnut Creek
Level 3 Communications
Introduced 09/13/2011
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Mcimetro Access Transmission Services LLC
Introduced 05/18/1998
Wireless
Walnut Creek
New Cingular Wireless PCS
Introduced 10/13/1999
Landline
San Ramon
Teleport Communications Group - San Francisco
Introduced 07/22/1999
Landline
Danville
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Hayward
Mci Worldcom Communications, Ca
Introduced 01/14/2000
Landline
San Ramon
Teleport Communications Group - San Francisco
Introduced 08/14/1998
Wireless
Pleasanton
Sprint Spectrum L.p.
Introduced 07/22/1999
Wireless
Pleasanton
Sprint Spectrum L.p.
Introduced 07/22/1999
Wireless
Pleasanton
Sprint Spectrum L.p.
Introduced 07/22/1999
Landline
Martinez
Pac - West Telecomm
Introduced 05/18/1998
Landline
Martinez
Pacific Bell
Introduced 05/18/1998
Landline
Livermore
Pacific Bell
Introduced 05/18/1998
Landline
Martinez
Pacific Bell
Introduced 05/18/1998
Landline
Livermore
Pacific Bell
Introduced 05/18/1998
Landline
Martinez
Allegiance Telecom
Introduced 10/31/2000
Landline
Moraga
Pacific Bell
Introduced 05/18/1998
Landline
Moraga
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Level 3 Communications
Introduced 06/30/2001
Wireless
Concord
New Cingular Wireless PCS
Introduced 07/22/1999
Wireless
Antioch
Sprint Spectrum L.p.
Introduced 07/22/1999
Wireless
Concord
Sprint Spectrum L.p.
Introduced 07/22/1999
Landline
Oakland
Teleport Communications Group - San Francisco
Introduced 10/13/1999
Landline
Oakland
Teleport Communications Group - San Francisco
Introduced 10/13/1999
Landline
Martinez
Teleport Communications Group - San Francisco
Introduced 10/13/1999
Landline
Oakland
Teleport Communications Group - San Francisco
Introduced 10/13/1999
Wireless
Danville
New Cingular Wireless PCS
Introduced 11/30/2001
Landline
Concord
Level 3 Communications
Introduced 11/25/2013
Landline
Brentwood
Teleport Communications Group - San Francisco
Introduced 03/03/2001
Landline
San Ramon
Global Crossing Local Services-ca
Introduced 01/14/2000
Landline
Walnut Creek
AT&T Local
Introduced 03/03/2001
Landline
Pleasanton
Pac - West Telecomm
Introduced 05/18/1998
Landline
Pleasanton
Pac - West Telecomm
Introduced 05/18/1998
Landline
Pleasanton
Teleport Communications Group - San Francisco
Introduced 05/18/1998
Landline
Pleasanton
Comcast Phone Of California
Introduced 05/18/1998
Landline
Pleasanton
O1 Communications
Introduced 05/10/1999
Landline
Pleasanton
Allegiance Telecom
Introduced 07/22/1999
Landline
Orinda
Allegiance Telecom
Introduced 07/22/1999
Landline
Lafayette
Allegiance Telecom
Introduced 07/22/1999
Landline
San Ramon
Allegiance Telecom
Introduced 07/22/1999
Landline
Concord
Allegiance Telecom
Introduced 07/22/1999
Landline
Danville
Allegiance Telecom
Introduced 07/22/1999
Landline
Walnut Creek
Allegiance Telecom
Introduced 07/22/1999
Wireless
Concord
New Cingular Wireless PCS
Introduced 06/30/2001
Wireless
Martinez
American Messaging Services
Introduced 10/13/1999
Wireless
San Ramon
New Cingular Wireless PCS
Introduced 01/14/2000
Landline
San Ramon
Broadwing Communications
Introduced 06/30/2001
Wireless
Pleasanton
Pacific Bell
Introduced 05/18/1998
Landline
Pleasanton
Pacific Bell
Introduced 05/18/1998
Landline
Brentwood
Broadwing Communications
Introduced 06/30/2001
Wireless
San Ramon
American Messaging Services
Introduced 07/22/1999
Landline
Brentwood
O1 Communications
Introduced 06/30/2001
Landline
Concord
Bandwidth.com Clec
Introduced 01/27/2012
Landline
Livermore
Pacific Bell
Introduced 05/18/1998
Landline
Livermore
Pacific Bell
Introduced 05/18/1998
Landline
Livermore
Pacific Bell
Introduced 05/18/1998
Landline
Pleasanton
Teleport Communications Group - San Francisco
Introduced 10/13/1999
Landline
Pleasanton
Pacific Bell
Introduced 05/18/1998
Landline
Pittsburg
Pacific Bell
Introduced 05/18/1998
Wireless
Antioch
T-mobile Usa
Introduced 04/19/2013
Landline
Concord
Broadwing Communications
Introduced 06/13/2000
Landline
Pittsburg
Pacific Bell
Introduced 05/18/1998
Landline
Pittsburg
Pacific Bell
Introduced 05/18/1998
Landline
Concord
T-mobile Usa
Introduced 03/03/2001
Wireless
Antioch
New Cingular Wireless PCS
Introduced 08/20/2000
Landline
Orinda
U.s. Telepacific Corp.
Introduced 10/31/2000
Landline
Pittsburg
Pacific Bell
Introduced 05/18/1998
Landline
Livermore
Pacific Bell
Introduced 05/18/1998
Landline
Lafayette
U.s. Telepacific Corp.
Introduced 06/30/2001
Wireless
Concord
Sprint Spectrum L.p.
Introduced 06/25/2012
Landline
Livermore
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Cellco Partnership DBA Verizon Wireless
Introduced 04/28/2014
Landline
Livermore
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
New Cingular Wireless PCS
Introduced 07/22/1999
Landline
San Ramon
U.s. Telepacific Corp.
Introduced 08/20/2000
Landline
Livermore
Mcimetro Access Transmission Services LLC
Introduced 05/18/1998
Landline
Livermore
Pacific Bell
Introduced 05/18/1998
Landline
Livermore
Pacific Bell
Introduced 05/18/1998
Landline
Livermore
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Sprint Spectrum L.p.
Introduced 10/31/2000
Landline
Pittsburg
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Broadwing Communications
Introduced 05/10/1999
Wireless
Pleasanton
Pacific Bell
Introduced 05/18/1998
Landline
Pleasanton
Pacific Bell
Introduced 05/18/1998
Landline
Pleasanton
Pacific Bell
Introduced 05/18/1998
Wireless
Pleasanton
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Cellco Partnership DBA Verizon Wireless
Introduced 08/16/2012
Landline
Walnut Creek
Broadwing Communications
Introduced 01/14/2000
Wireless
Pleasanton
Pacific Bell
Introduced 05/18/1998
Wireless
Pleasanton
Pacific Bell
Introduced 05/18/1998
Wireless
Pleasanton
Pacific Bell
Introduced 05/18/1998
Landline
Antioch
Teleport Communications Group - San Francisco
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Landline
Pittsburg
Pacific Bell
Introduced 05/18/1998
Landline
Pleasanton
U.s. Telepacific Corp.
Introduced 08/20/2000
Landline
Pleasanton
Pac - West Telecomm
Introduced 10/13/1999
Landline
Oakland
Pac - West Telecomm
Introduced 10/13/1999
Landline
Walnut Creek
Level 3 Communications
Introduced 02/27/1999
Landline
San Ramon
Pacific Bell
Introduced 10/31/2000
Landline
San Ramon
U.s. Telepacific Corp.
Introduced 05/18/1998
Wireless
Antioch
New Cingular Wireless PCS
Introduced 03/24/2014
Landline
Walnut Creek
U.s. Telepacific Corp.
Introduced 10/31/2000
Landline
Pleasanton
Pacific Bell
Introduced 05/18/1998
Landline
Pleasanton
Pacific Bell
Introduced 05/18/1998
Wireless
San Ramon
New Cingular Wireless PCS
Introduced 06/13/2000
Unknown
Bandwidth.com Clec
Introduced 05/23/2014
Landline
Livermore
Teleport Communications Group - San Francisco
Introduced 10/31/2000
Wireless
Concord
Metro PCS
Introduced 08/22/2001
Landline
San Ramon
U.s. Telepacific Corp.
Introduced 03/03/2001
Landline
Martinez
O1 Communications
Introduced 05/10/1999
Wireless
San Ramon
Usa Mobility Wireless
Introduced 11/20/1998
Landline
Brentwood
Pacific Bell
Introduced 05/18/1998
Landline
Brentwood
Pacific Bell
Introduced 05/18/1998
Landline
Pittsburg
O1 Communications
Introduced 05/18/2001
Wireless
Livermore
Sprint Spectrum L.p.
Introduced 08/14/1998
Wireless
Pleasanton
Cellco Partnership DBA Verizon Wireless
Introduced 11/20/1998
Wireless
Pleasanton
Pacific Bell
Introduced 10/13/1999
Landline
Concord
Pacific Bell
Introduced 10/13/1999
Landline
Antioch
Pacific Bell
Introduced 10/13/1999
Wireless
Pleasanton
Pacific Bell
Introduced 01/14/2000
Landline
Clayton
Pacific Bell
Introduced 01/14/2000
Wireless
Livermore
Sprint Spectrum L.p.
Introduced 08/20/2000
Landline
Pittsburg
U.s. Telepacific Corp.
Introduced 08/20/2000
Wireless
Walnut Creek
The Telephone Connection Local Services
Introduced 10/31/2000
Wireless
Orinda
Sprint Spectrum L.p.
Introduced 10/31/2000
Landline
Antioch
Cf Communications DBA Telekenex
Introduced 11/22/2010
Wireless
Pleasanton
Sprint Spectrum L.p.
Introduced 10/31/2000
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Wireless
San Ramon
New Cingular Wireless PCS
Introduced 01/14/2000
Wireless
San Ramon
New Cingular Wireless PCS
Introduced 01/14/2000
Wireless
Antioch
New Cingular Wireless PCS
Introduced 02/27/1999
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
Danville
Pacific Bell
Introduced 05/18/1998
Landline
Danville
Xo California
Introduced 02/27/1999
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Mci Worldcom Communications, Ca
Introduced 05/18/1998
Landline
San Ramon
Xo California
Introduced 02/27/1999
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Wireless
Antioch
Metro PCS
Introduced 09/21/2001
Landline
Concord
AT&T Local
Introduced 05/10/1999
Wireless
Clayton
Sprint Spectrum L.p.
Introduced 07/17/2001
Landline
Sunol
Teleport Communications Group - San Francisco
Introduced 01/14/2000
Wireless
San Ramon
Sprint Spectrum L.p.
Introduced 05/10/1999
Landline
San Ramon
North County Communications Corp.
Introduced 06/13/2000
Landline
Pleasanton
North County Communications Corp.
Introduced 06/13/2000
Landline
Pittsburg
North County Communications Corp.
Introduced 06/13/2000
Landline
San Ramon
U.s. Telepacific Corp.
Introduced 06/27/2001
Wireless
Danville
Sprint Spectrum L.p.
Introduced 03/03/2001
Wireless
San Ramon
T-mobile Usa
Introduced 09/19/2001
Landline
Livermore
Allegiance Telecom
Introduced 04/24/2001
Wireless
Pleasanton
Sprint Spectrum L.p.
Introduced 07/22/1999
Landline
Livermore
U.s. Telepacific Corp.
Introduced 08/20/2000
Wireless
Antioch
Sprint Spectrum L.p.
Introduced 10/31/2000
Wireless
Concord
American Messaging Services
Introduced 08/14/1998
Wireless
Concord
Cellco Partnership DBA Verizon Wireless
Introduced 06/13/2000
Landline
San Ramon
Mpower Communications Corp
Introduced 06/13/2000
Wireless
Walnut Creek
Mpower Communications Corp
Introduced 06/13/2000
Landline
Walnut Creek
Mpower Communications Corp
Introduced 11/20/1998
Wireless
Danville
Metro PCS
Introduced 09/21/2001
Wireless
Concord
Sprint Spectrum L.p.
Introduced 05/18/2001
Wireless
Pleasanton
Cellco Partnership DBA Verizon Wireless
Introduced 08/20/2000
Wireless
Pittsburg
Cellco Partnership DBA Verizon Wireless
Introduced 06/13/2000
Wireless
Pleasanton
Pacific Bell
Introduced 08/14/1998
Landline
Pleasanton
Pacific Bell
Introduced 02/27/1999
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Livermore
Pac - West Telecomm
Introduced 11/20/1998
Landline
Livermore
Pacific Bell
Introduced 05/18/1998
Landline
Martinez
Broadwing Communications
Introduced 03/01/2001
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Pleasanton
U.s. Telepacific Corp.
Introduced 04/26/2001
Wireless
Pleasanton
Sprint Spectrum L.p.
Introduced 10/31/2000
Landline
Oakley
Pacific Bell
Introduced 05/18/1998
Landline
Brentwood
Mcimetro Access Transmission Services LLC
Introduced 05/18/1998
Landline
Walnut Creek
U.s. Telepacific Corp.
Introduced 03/27/2001
Wireless
Antioch
Cellco Partnership DBA Verizon Wireless
Introduced 08/20/2000
Landline
Moraga
Pacific Bell
Introduced 05/18/1998
Landline
Brentwood
Pacific Bell
Introduced 05/18/1998
Landline
Pittsburg
Teleport Communications Group - San Francisco
Introduced 08/20/2000
Wireless
Walnut Creek
T-mobile Usa
Introduced 10/18/2001
Wireless
San Ramon
New Cingular Wireless PCS
Introduced 02/27/1999
Wireless
Antioch
New Cingular Wireless PCS
Introduced 03/03/2001
Landline
Pittsburg
U.s. Telepacific Corp.
Introduced 05/21/2001
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Danville
Pacific Bell
Introduced 05/18/1998
Landline
Walnut Creek
Teleport Communications Group - San Francisco
Introduced 06/13/2000
Landline
San Ramon
Teleport Communications Group - San Francisco
Introduced 06/13/2000
Landline
Pleasanton
Tw Telecom Of California Lp
Introduced 08/14/1998
Landline
Sunol
Pac - West Telecomm
Introduced 07/22/1999
Landline
Pittsburg
Pac - West Telecomm
Introduced 07/22/1999
Landline
Pittsburg
Pac - West Telecomm
Introduced 07/22/1999
Landline
Brentwood
Pac - West Telecomm
Introduced 07/22/1999
Landline
Livermore
U.s. Telepacific Corp.
Introduced 05/18/2001
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Clayton
Pacific Bell
Introduced 05/18/1998
Landline
Clayton
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Danville
U.s. Telepacific Corp.
Introduced 08/20/2000
Landline
Oakley
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Wireless
Danville
New Cingular Wireless PCS
Introduced 05/10/1999
Landline
Oakley
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Clayton
Mcimetro Access Transmission Services LLC
Introduced 02/27/1999
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Clayton
Teleport Communications Group - San Francisco
Introduced 10/31/2000
Landline
Pleasanton
Mcimetro Access Transmission Services LLC
Introduced 05/18/1998
Landline
Concord
Mpower Communications Corp
Introduced 05/18/1998
Wireless
Pittsburg
New Cingular Wireless PCS
Introduced 01/14/2000
Wireless
Pleasanton
New Cingular Wireless PCS
Introduced 01/14/2000
Landline
Pleasanton
U.s. Telepacific Corp.
Introduced 06/13/2000
Wireless
Walnut Creek
Metro PCS
Introduced 08/22/2001
Landline
Antioch
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Cellco Partnership DBA Verizon Wireless
Introduced 01/26/2001
Landline
Pittsburg
Pacific Bell
Introduced 05/18/1998
Landline
Danville
O1 Communications
Introduced 01/26/2001
Wireless
San Ramon
Cellco Partnership DBA Verizon Wireless
Introduced 04/16/2002
Landline
Martinez
Mpower Communications Corp
Introduced 06/13/2000
Landline
Livermore
Mpower Communications Corp
Introduced 06/13/2000
Landline
Danville
Mpower Communications Corp
Introduced 06/13/2000
Landline
Concord
Mpower Communications Corp
Introduced 01/14/2000
Landline
Antioch
Mpower Communications Corp
Introduced 06/13/2000
Wireless
Pleasanton
Pacific Bell
Introduced 05/18/1998
Landline
Antioch
Cf Communications DBA Telekenex
Introduced 11/02/2011
Wireless
Pleasanton
Pacific Bell
Introduced 05/18/1998
Landline
Danville
Pacific Bell
Introduced 05/18/1998
Landline
Danville
Pacific Bell
Introduced 05/18/1998
Wireless
Pleasanton
Pacific Bell
Introduced 05/18/1998
Landline
Pleasanton
Mcimetro Access Transmission Services LLC
Introduced 05/18/1998
Wireless
Livermore
American Messaging Services
Introduced 01/14/2000
Landline
Danville
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Landline
Pleasanton
Mcimetro Access Transmission Services LLC
Introduced 05/18/1998
Landline
Antioch
Mcimetro Access Transmission Services LLC
Introduced 05/18/1998
Landline
Antioch
Pacific Bell
Introduced 05/18/1998
Landline
Antioch
Pacific Bell
Introduced 05/18/1998
Landline
Antioch
Pacific Bell
Introduced 08/14/1998
Landline
Antioch
Pacific Bell
Introduced 05/18/1998
Landline
Antioch
Pacific Bell
Introduced 05/18/1998
Wireless
Antioch
New Cingular Wireless PCS
Introduced 06/13/2000
Landline
San Ramon
Pacific Bell
Introduced 02/27/1999
Wireless
Walnut Creek
Sprint Spectrum L.p.
Introduced 06/13/2000
Wireless
Walnut Creek
Sprint Spectrum L.p.
Introduced 11/20/1998
Wireless
Concord
Cellco Partnership DBA Verizon Wireless
Introduced 06/25/2001
Landline
Concord
U.s. Telepacific Corp.
Introduced 03/01/2001
Landline
Antioch
Pac - West Telecomm
Introduced 05/18/1998
Landline
Antioch
Pacific Bell
Introduced 05/18/1998
Landline
Antioch
Pacific Bell
Introduced 05/18/1998
Landline
Antioch
Pacific Bell
Introduced 05/18/1998
Landline
Antioch
Pacific Bell
Introduced 05/18/1998
Wireless
Antioch
Cellco Partnership DBA Verizon Wireless
Introduced 05/10/1999
Wireless
Livermore
Cellco Partnership DBA Verizon Wireless
Introduced 05/10/1999
Wireless
San Ramon
Cellco Partnership DBA Verizon Wireless
Introduced 05/10/1999
Wireless
San Ramon
Cellco Partnership DBA Verizon Wireless
Introduced 05/10/1999
Wireless
Concord
Cellco Partnership DBA Verizon Wireless
Introduced 05/10/1999
Wireless
Walnut Creek
Cellco Partnership DBA Verizon Wireless
Introduced 05/10/1999
Wireless
Sunol
Cellco Partnership DBA Verizon Wireless
Introduced 05/10/1999
Landline
San Ramon
Pacific Bell
Introduced 01/26/2001
Landline
Concord
U.s. Telepacific Corp.
Introduced 07/16/2001
Landline
Moraga
O1 Communications
Introduced 07/17/2001
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Livermore
O1 Communications
Introduced 05/10/1999
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Teleport Communications Group - San Francisco
Introduced 05/18/1998
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Xo California
Introduced 02/27/1999
Landline
Concord
Pacific Bell
Introduced 05/10/1999
Landline
Brentwood
U.s. Telepacific Corp.
Introduced 03/01/2001
Wireless
Martinez
Metro PCS
Introduced 09/21/2001
Wireless
Antioch
Cellco Partnership DBA Verizon Wireless
Introduced 08/21/2002
Landline
Danville
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 07/22/1999
Wireless
Walnut Creek
New Cingular Wireless PCS
Introduced 10/13/1999
Wireless
San Ramon
New Cingular Wireless PCS
Introduced 10/13/1999
Landline
Danville
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Mcimetro Access Transmission Services LLC
Introduced 05/18/1998
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
Concord
Mci Worldcom Communications, Ca
Introduced 05/18/1998
Landline
Concord
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
Danville
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
Sunol
U.s. Telepacific Corp.
Introduced 08/20/2000
Landline
Danville
Pacific Bell
Introduced 05/18/1998
Landline
Danville
Pacific Bell
Introduced 05/18/1998
Landline
Martinez
U.s. Telepacific Corp.
Introduced 04/24/2001
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Tw Telecom Of California Lp
Introduced 05/20/2010
Landline
Clayton
U.s. Telepacific Corp.
Introduced 07/17/2001
Landline
Pleasanton
Pacific Bell
Introduced 05/18/1998
Wireless
Pleasanton
Pacific Bell
Introduced 05/18/1998
Landline
Antioch
Pac - West Telecomm
Introduced 01/14/2000
Landline
Concord
U.s. Telepacific Corp.
Introduced 08/20/2000
Landline
Concord
Xo California
Introduced 04/24/2001
Landline
Danville
Mci Worldcom Communications, Ca
Introduced 05/18/1998
Landline
Danville
Pacific Bell
Introduced 05/18/1998
Landline
Danville
Mcimetro Access Transmission Services LLC
Introduced 05/18/1998
Wireless
San Ramon
New Cingular Wireless PCS
Introduced 02/27/1999
Landline
Fremont
Xo California
Introduced 02/27/1999
Landline
Sunol
Pacific Bell
Introduced 05/18/1998
Wireless
Concord
Sprint Spectrum L.p.
Introduced 08/20/2000
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
Oakland
Pac - West Telecomm
Introduced 11/20/1998
Wireless
Pleasanton
Cellco Partnership DBA Verizon Wireless
Introduced 02/27/1999
Landline
San Ramon
Pacific Bell
Introduced 05/10/1999
Wireless
Walnut Creek
New Cingular Wireless PCS
Introduced 11/20/1998
Wireless
Lafayette
Sprint Spectrum L.p.
Introduced 08/20/2000
Landline
San Ramon
Pac - West Telecomm
Introduced 05/10/1999
Landline
Oakland
Pac - West Telecomm
Introduced 05/10/1999
Landline
Danville
Pac - West Telecomm
Introduced 05/10/1999
Landline
Concord
Pac - West Telecomm
Introduced 05/10/1999
Landline
Oakland
Pac - West Telecomm
Introduced 05/10/1999
Landline
Clayton
Pac - West Telecomm
Introduced 05/10/1999
Wireless
Concord
New Cingular Wireless PCS
Introduced 11/20/1998
Landline
Oakland
Pac - West Telecomm
Introduced 05/10/1999
Landline
Pleasanton
Pac - West Telecomm
Introduced 05/10/1999
Wireless
San Ramon
Sprint Spectrum L.p.
Introduced 08/20/2000
Wireless
Walnut Creek
New Cingular Wireless PCS
Introduced 05/10/1999
Landline
Lafayette
O1 Communications
Introduced 05/10/1999
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Pacific Bell
Introduced 05/18/1998
Landline
San Ramon
Pac - West Telecomm
Introduced 05/10/1999
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
San Ramon
T-mobile Usa
Introduced 09/20/2002
Wireless
Clayton
T-mobile Usa
Introduced 09/20/2002
Wireless
Danville
T-mobile Usa
Introduced 09/20/2002
Wireless
Martinez
T-mobile Usa
Introduced 09/20/2002
Wireless
Pleasanton
Cellco Partnership DBA Verizon Wireless
Introduced 06/13/2000
Wireless
Walnut Creek
Usa Mobility Wireless
Introduced 08/14/1998
Wireless
Pleasanton
T-mobile Usa
Introduced 09/20/2002
Wireless
Pleasanton
Pacific Bell
Introduced 05/10/1999
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Landline
Pleasanton
Pacific Bell
Introduced 05/10/1999
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Landline
Oakland
Pac - West Telecomm
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Landline
Walnut Creek
Mci Worldcom Communications, Ca
Introduced 05/18/1998
Landline
Walnut Creek
Teleport Communications Group - San Francisco
Introduced 05/18/1998
Landline
Walnut Creek
Mcimetro Access Transmission Services LLC
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Landline
Walnut Creek
Tw Telecom Of California Lp
Introduced 05/18/1998
Landline
Oakland
Mpower Communications Corp
Introduced 05/18/1998
Landline
Oakland
Pac - West Telecomm
Introduced 05/18/1998
Landline
Walnut Creek
Xo California
Introduced 11/20/1998
Landline
Martinez
Pacific Bell
Introduced 05/10/1999
Landline
Livermore
Pacific Bell
Introduced 05/10/1999
Landline
Livermore
Pacific Bell
Introduced 05/10/1999
Landline
Lafayette
Pacific Bell
Introduced 05/10/1999
Wireless
Pleasanton
New Cingular Wireless PCS
Introduced 11/20/1998
Landline
Danville
Pacific Bell
Introduced 05/10/1999
Landline
Pleasanton
AT&T Local
Introduced 02/27/1999
Landline
San Ramon
Pacific Bell
Introduced 05/10/1999
Landline
Danville
Pacific Bell
Introduced 05/10/1999
Landline
Concord
Pacific Bell
Introduced 05/10/1999
Landline
San Ramon
Pacific Bell
Introduced 05/10/1999
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Landline
Antioch
Pacific Bell
Introduced 05/10/1999
Wireless
Walnut Creek
Pacific Bell
Introduced 05/10/1999
Wireless
Livermore
New Cingular Wireless PCS
Introduced 05/10/1999
Landline
Hayward
Mci Worldcom Communications, Ca
Introduced 05/18/1998
Wireless
Danville
Sprint Spectrum L.p.
Introduced 08/20/2000
Wireless
Walnut Creek
Pacific Bell
Introduced 05/18/1998
Wireless
Pleasanton
Cellco Partnership DBA Verizon Wireless
Introduced 05/10/1999
Wireless
Sunol
The Telephone Connection Local Services
Introduced 10/31/2000
Landline
Clayton
O1 Communications
Introduced 03/26/2001
Wireless
San Ramon
New Cingular Wireless PCS
Introduced 05/10/1999
Wireless
Pleasanton
New Cingular Wireless PCS
Introduced 11/20/1998
Landline
San Ramon
O1 Communications
Introduced 05/10/1999

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