Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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San Francisco: Central DA, CA

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
415-522 A SNFCCA04DS0  9740 PACIFIC BELL 722      
415-523 A SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722      
415-523 0   981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-08-15   
415-523 1   981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-08-15   
415-523 2   981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-08-15   
415-523 3   981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-08-15   
415-523 4   981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-08-15   
415-523 5   981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-08-15   
415-523 6   981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-08-15   
415-523 7   649C ONVOY, LLC - CA 722   2011-08-15   
415-523 8   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2011-08-05   
415-523 9   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2011-08-05   
415-525 A SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
415-525 0   5562 METROPCS, INC. 722   2008-11-06   
415-525 1   6529 T-MOBILE USA, INC. 722   2007-12-20   
415-525 2   6529 T-MOBILE USA, INC. 722   2007-12-20   
415-525 3   318J COMCAST IP PHONE, LLC 722   2007-12-16   
415-525 4   318J COMCAST IP PHONE, LLC 722   2007-12-16   
415-525 5   9262 UTILITY TELECOM GROUP, LLC - CA 722   2007-10-08   
415-525 6   6529 T-MOBILE USA, INC. 722   2010-11-09   
415-525 7   6529 T-MOBILE USA, INC. 722   2007-12-20   
415-525 8   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2008-10-16   
415-525 9   6529 T-MOBILE USA, INC. 722   2007-12-20   
415-527 A OKLDCAEBDS0  7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722      
415-527 0   981E BANDWIDTH.COM CLEC, LLC - CA 722   2012-08-11   
415-527 1   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2012-08-10   
415-527 2   7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722   2012-07-13   
415-527 3   649C ONVOY, LLC - CA 722   2012-07-27   
415-527 4   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2012-08-10   
415-527 5   649C ONVOY, LLC - CA 722   2012-07-27   
415-527 6   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-07-28   
415-527 7   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-07-28   
415-527 8   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-07-28   
415-527 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-07-28   
415-529 A SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
415-529 0   6529 T-MOBILE USA, INC. 722   2011-01-04   
415-529 1   318J COMCAST IP PHONE, LLC 722   2011-01-06   
415-529 2   318J COMCAST IP PHONE, LLC 722   2011-01-06   
415-529 3   649C ONVOY, LLC - CA 722   2011-01-02   
415-529 4   981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-01-14   
415-529 5   981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-01-14   
415-529 6   981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-02-17   
415-529 7   649C ONVOY, LLC - CA 722   2011-01-21   
415-529 8   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2011-02-25   
415-529 9   649C ONVOY, LLC - CA 722   2011-01-02   
415-530 A SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
415-530 0   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2014-11-25   
415-530 1   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2014-11-25   
415-530 2   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-11-23   
415-530 3   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-11-23   
415-530 4   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-11-23   
415-530 5   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2014-11-25   
415-530 6   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2014-11-25   
415-530 7   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2014-11-25   
415-530 8   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2014-11-25   
415-530 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2014-11-25   
415-531 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
415-533 A SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
415-535 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
415-535 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2012-07-20   
415-535 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2012-07-20   
415-535 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2012-07-20   
415-535 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2012-07-20   
415-535 4   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2013-11-12   
415-535 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2013-11-12   
415-535 6   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-09-03   
415-535 7   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-09-03   
415-535 8   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-09-03   
415-535 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-09-03   
415-536 A SNFCCA21DS1  9740 PACIFIC BELL 722      
415-537 A SNFCCA21DS1  9740 PACIFIC BELL 722      
415-537 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2014-03-10   
415-537 1   9740 PACIFIC BELL 722      
415-537 2   9740 PACIFIC BELL 722      
415-537 3   9740 PACIFIC BELL 722      
415-537 4   9740 PACIFIC BELL 722      
415-537 5   9740 PACIFIC BELL 722      
415-537 6   9740 PACIFIC BELL 722      
415-537 7   9740 PACIFIC BELL 722      
415-537 8   9740 PACIFIC BELL 722      
415-537 9   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2021-12-25   
415-538 A SNFCCA21DS0  9740 PACIFIC BELL 722      
415-539 A SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
415-539 0   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2012-11-20   
415-539 1   649C ONVOY, LLC - CA 722   2012-11-20   
415-539 2   649C ONVOY, LLC - CA 722   2012-11-20   
415-539 3   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2012-11-20   
415-539 4   981E BANDWIDTH.COM CLEC, LLC - CA 722   2012-11-20   
415-539 5   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-11-18   
415-539 6   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-11-18   
415-539 7   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-11-18   
415-539 8   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-11-18   
415-539 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-11-18   
415-540 A SNFCCA21XEZ  6630 USA MOBILITY WIRELESS, INC. 722      
415-541 A SNFCCA21DS0  9740 PACIFIC BELL 722      
415-541 0   9740 PACIFIC BELL 722      
415-541 1   9740 PACIFIC BELL 722      
415-541 2   9740 PACIFIC BELL 722      
415-541 3   9740 PACIFIC BELL 722      
415-541 4   9740 PACIFIC BELL 722      

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

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