Local Calling Guide

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East Contra Costa, CA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
925-513 0   9740 PACIFIC BELL 722      
925-513 1   9740 PACIFIC BELL 722      
925-513 2   9740 PACIFIC BELL 722      
925-513 3   9740 PACIFIC BELL 722      
925-513 4   9740 PACIFIC BELL 722      
925-513 5   318J COMCAST IP PHONE, LLC 722   2011-09-26   
925-513 6   9740 PACIFIC BELL 722      
925-513 7   9740 PACIFIC BELL 722      
925-513 8   9740 PACIFIC BELL 722      
925-513 9   9740 PACIFIC BELL 722      
925-516 A BRWDCA12DS0  9740 PACIFIC BELL 722      
925-559 A   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2026-03-06   
925-559 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2026-03-06   
925-578 A SNJUCACL9MD  516J TON80 COMMUNICATIONS, LLC 722      
925-578 0   433E SONIC TELECOM, LLC - CA 722   2021-07-11   
925-578 1   649C ONVOY, LLC - CA 722   2021-07-30   
925-578 2   649C ONVOY, LLC - CA 722   2021-04-02   
925-578 3   649C ONVOY, LLC - CA 722   2021-04-02   
925-578 4   649C ONVOY, LLC - CA 722   2021-04-02   
925-578 5   624H ONVOY SPECTRUM, LLC 722   2021-07-24   
925-578 6   649C ONVOY, LLC - CA 722   2021-07-30   
925-578 7   516J TON80 COMMUNICATIONS, LLC 722   2021-01-02   
925-578 8   649C ONVOY, LLC - CA 722   2021-07-30   
925-578 9   649C ONVOY, LLC - CA 722   2021-07-30   
925-625 A OKLYCA11DS0  9740 PACIFIC BELL 722      
925-626 A HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-626 0   981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-06-13   
925-626 1   624H ONVOY SPECTRUM, LLC 722   2025-05-16   
925-626 2   829J PAETEC ITEL, LLC 722   2012-08-24   
925-626 3   9740 PACIFIC BELL 722   2006-08-25   
925-626 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2007-04-09   
925-626 5   516C AT&T CORP. 722   2014-02-19   
925-626 6   433E SONIC TELECOM, LLC - CA 722   2015-04-09   
925-626 7   318J COMCAST IP PHONE, LLC 722   2008-06-10   
925-626 8   318J COMCAST IP PHONE, LLC 722   2015-10-12   
925-626 9   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
925-634 A BRWDCA12DS0  9740 PACIFIC BELL 722      
925-666 A OKLDCAAN5MD  7379 MATRIX TELECOM, LLC. S/I/I TNCI - CA 722      
925-666 0   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
925-666 1   649C ONVOY, LLC - CA 722      
925-666 2   649C ONVOY, LLC - CA 722      
925-666 3   649C ONVOY, LLC - CA 722      
925-666 4   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-08-29   
925-666 5   981E BANDWIDTH.COM CLEC, LLC - CA 722   2020-07-19   
925-666 6   649C ONVOY, LLC - CA 722   2010-10-03   
925-666 7   649C ONVOY, LLC - CA 722   2006-01-08   
925-666 8   318J COMCAST IP PHONE, LLC 722   2014-04-11   
925-666 9   649C ONVOY, LLC - CA 722   2014-12-12   
925-679 A OKLYCA11DS0  9740 PACIFIC BELL 722      
925-679 0   9740 PACIFIC BELL 722      
925-679 1   9740 PACIFIC BELL 722      
925-679 2   9740 PACIFIC BELL 722      
925-679 3   9740 PACIFIC BELL 722      
925-679 4   318J COMCAST IP PHONE, LLC 722   2015-12-03   
925-679 5   981E BANDWIDTH.COM CLEC, LLC - CA 722   2008-11-24   
925-679 6   508J CENTURYLINK COMMUNICATIONS, LLC 722   2014-03-28   
925-679 7   516C AT&T CORP. 722   2010-04-30   
925-679 8   9740 PACIFIC BELL 722      
925-679 9   9740 PACIFIC BELL 722      
925-684 A BTISCA11RS0  9740 PACIFIC BELL 722      
925-684 0   9740 PACIFIC BELL 722      
925-684 1   9740 PACIFIC BELL 722      
925-684 2   9740 PACIFIC BELL 722      
925-684 3   9740 PACIFIC BELL 722      
925-684 4   318J COMCAST IP PHONE, LLC 722   2007-05-03   
925-684 5   9262 UTILITY TELECOM GROUP, LLC - CA 722   2006-05-22   
925-684 6   649C ONVOY, LLC - CA 722   2013-03-29   
925-684 7   318J COMCAST IP PHONE, LLC 722   2010-05-10   
925-684 8   649C ONVOY, LLC - CA 722   2016-03-11   
925-684 9   9740 PACIFIC BELL 722      
925-809 A SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
925-809 0   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2015-11-27   
925-809 1   145J TERRA NOVA TELECOM INC. 722   2024-04-23   
925-809 2   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2015-11-27   
925-809 3   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
925-809 4   649C ONVOY, LLC - CA 722   2014-12-12   
925-809 5   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2014-07-21   
925-809 6   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2013-03-29   
925-809 7   9740 PACIFIC BELL 722   2004-06-20   
925-809 8   649C ONVOY, LLC - CA 722   2016-03-11   
925-809 9   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
925-832 A SNJUCACL9MD  516J TON80 COMMUNICATIONS, LLC 722      
925-832 0   981E BANDWIDTH.COM CLEC, LLC - CA 722   2022-08-06   
925-832 1   981E BANDWIDTH.COM CLEC, LLC - CA 722   2022-08-06   
925-832 2   981E BANDWIDTH.COM CLEC, LLC - CA 722   2022-08-06   
925-832 3   981E BANDWIDTH.COM CLEC, LLC - CA 722   2022-08-06   
925-832 4   516J TON80 COMMUNICATIONS, LLC 722   2022-04-02   
925-832 5   981E BANDWIDTH.COM CLEC, LLC - CA 722   2022-08-06   
925-832 6   490J DISH WIRELESS, LLC 722   2023-02-16   
925-832 7   649C ONVOY, LLC - CA 722   2022-11-14   
925-832 8   649C ONVOY, LLC - CA 722   2022-11-14   
925-832 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2022-04-10   
925-880 A SNJUCACL7MD  965H FRACTEL, LLC 722      
925-880 0   965H FRACTEL, LLC 722   2021-09-12   
925-880 1   624H ONVOY SPECTRUM, LLC 722   2021-11-18   
925-880 2   965H FRACTEL, LLC 722   2021-09-12   
925-880 3   624H ONVOY SPECTRUM, LLC 722   2021-11-18   
925-880 4   965H FRACTEL, LLC 722   2021-09-12   
925-880 5   624H ONVOY SPECTRUM, LLC 722   2021-11-18   
925-880 6   624H ONVOY SPECTRUM, LLC 722   2021-11-18   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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