Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Dublin-San Ramon, CA

1 2 3 4 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
925-216 A CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-230 A SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-230 0 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-04-30   
925-230 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2007-09-07   
925-230 2 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-230 3 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2020-11-08   
925-230 4 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2020-11-08   
925-230 5 SNFCCAMKX9X  073H TELNYX LLC 722   2020-11-26   
925-230 6 OKLDCAMP1MD  4733 PAETEC COMMUNICATIONS, INC. - CA 722   2009-04-28   
925-230 7 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2020-09-21   
925-230 8 SNFCCA01XGX  516C AT&T CORP. 722   2006-06-30   
925-230 9 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2009-06-23   
925-236 A SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-236 0 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
925-236 1 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-236 2 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-236 3 SNJUCACL3MD  073H TELNYX LLC 722   2017-06-05   
925-236 4 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-236 5 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-236 6 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-236 7 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-236 8 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-236 9 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-241 A HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-241 0 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-04-23   
925-241 1 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-241 2 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-241 3 SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2002-09-03   
925-241 4 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2008-05-19   
925-241 5 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2010-02-21   
925-241 6 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-04-23   
925-241 7 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2007-03-02   
925-241 8   515J IP HORIZON LLC 722   2016-09-15   
925-241 9 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-248 A DAVLCA13DS0  9740 PACIFIC BELL 722      
925-248 0 DAVLCA13DS0  9740 PACIFIC BELL 722      
925-248 1 DAVLCA13DS0  9740 PACIFIC BELL 722      
925-248 2 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2010-09-27   
925-248 3 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-03-03   
925-248 4 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2016-03-03   
925-248 5 DAVLCA13DS0  9740 PACIFIC BELL 722      
925-248 6 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2019-06-25   
925-248 7 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2019-06-25   
925-248 8 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2016-11-06   
925-248 9 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-04-27   
925-307 A OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
925-307 0 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-06-26   
925-307 1 OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
925-307 2 HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2018-06-22   
925-307 3 OKLDCA03XKY  624H ONVOY SPECTRUM, LLC 722   2023-12-16   
925-307 4 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2019-06-25   
925-307 5 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2007-04-07   
925-307 6 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-10-01   
925-307 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2005-03-16   
925-307 8 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2010-03-08   
925-307 9 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-06-25   
925-336 A CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-336 0 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-336 1 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-336 2 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2016-04-27   
925-336 3 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-06-12   
925-336 4 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2011-07-25   
925-336 5 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2016-04-27   
925-336 6 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-336 7 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-336 8 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2010-05-17   
925-336 9 CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
925-361 A SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
925-361 0 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
925-361 1 SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
925-361 2 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-07-04   
925-361 3 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2012-12-06   
925-361 4 SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
925-361 5 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
925-361 6 SNFCCAMKX9X  073H TELNYX LLC 722   2021-08-02   
925-361 7 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
925-361 8 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
925-361 9 SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
925-364 A HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
925-364 0 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2011-01-14   
925-364 1 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2013-08-08   
925-364 2 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2010-09-02   
925-364 3 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2010-09-02   
925-364 4 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-02-24   
925-364 5 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-02-24   
925-364 6 HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2013-01-23   
925-364 7 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2011-10-03   
925-364 8 HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2012-01-12   
925-364 9 HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
925-404 A HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-404 0   145J TERRA NOVA TELECOM INC. 722   2021-01-06   
925-404 1 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-404 2 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-404 3 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2012-10-01   
925-404 4 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2014-10-08   
925-404 5 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2024-11-09   
925-404 6 OKLDCAMP1MD  4733 PAETEC COMMUNICATIONS, INC. - CA 722   2017-05-19   
925-404 7 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2019-04-21   
925-404 8 OKLDCA03XKY  624H ONVOY SPECTRUM, LLC 722   2024-05-22   
925-404 9 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2018-08-26   

1 2 3 4 >>

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.