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.

San Francisco: Central DA, CA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
628-213 0   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2017-01-28   
628-213 1   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2017-01-30   
628-213 2   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2017-01-30   
628-213 3   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2017-09-19   
628-213 4   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-10-27   
628-213 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-10-27   
628-213 6   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-10-27   
628-213 7   649C ONVOY, LLC - CA 722   2017-11-12   
628-213 8   649C ONVOY, LLC - CA 722   2017-11-12   
628-213 9   6529 T-MOBILE USA, INC. 722   2017-01-27   
628-217 A SNRSCA01KMD  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
628-217 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-12-22   
628-217 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-12-22   
628-217 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-01-16   
628-217 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-12-11   
628-217 4   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-12-11   
628-217 5   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2016-10-20   
628-217 6   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2016-10-20   
628-217 7   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2016-10-20   
628-217 8   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2016-10-20   
628-217 9   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2016-10-20   
628-218 A HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
628-218 0   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2017-10-23   
628-218 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-12-18   
628-218 2   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2017-08-07   
628-218 3   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2017-08-07   
628-218 4   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2017-08-07   
628-218 5   649C ONVOY, LLC - CA 722   2017-09-16   
628-218 6   649C ONVOY, LLC - CA 722   2017-09-16   
628-218 7   649C ONVOY, LLC - CA 722   2017-09-16   
628-218 8   649C ONVOY, LLC - CA 722   2017-09-16   
628-218 9   649C ONVOY, LLC - CA 722   2017-09-16   
628-220 A SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
628-220 0   649C ONVOY, LLC - CA 722   2016-05-13   
628-220 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-06-02   
628-220 2   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2016-04-04   
628-220 3   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2016-04-04   
628-220 4   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2016-04-04   
628-220 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-06-02   
628-220 6   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2016-06-06   
628-220 7   7718 LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 722   2016-06-06   
628-220 8   6529 T-MOBILE USA, INC. 722   2016-05-22   
628-220 9   6529 T-MOBILE USA, INC. 722   2016-05-22   
628-221 A SNVACAHZ0MD  508J CENTURYLINK COMMUNICATIONS, LLC 722      
628-221 0   981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-09-19   
628-221 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-08-29   
628-221 2   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2015-09-07   
628-221 3   649C ONVOY, LLC - CA 722   2015-09-07   
628-221 4   649C ONVOY, LLC - CA 722   2015-09-07   
628-221 5   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2015-09-28   
628-221 6   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2015-09-28   
628-221 7   508J CENTURYLINK COMMUNICATIONS, LLC 722   2015-08-29   
628-221 8   508J CENTURYLINK COMMUNICATIONS, LLC 722   2015-08-28   
628-221 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-09-18   
628-222 A SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
628-222 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-03-24   
628-222 1   649C ONVOY, LLC - CA 722   2023-10-15   
628-222 2   649C ONVOY, LLC - CA 722   2015-03-21   
628-222 3   981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-03-24   
628-222 4   981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-03-24   
628-222 5   981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-03-24   
628-222 6   981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-03-24   
628-222 7   981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-03-24   
628-222 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-03-24   
628-222 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-03-24   
628-223 A SNFCCAFJDS0  7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722      
628-223 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-11-14   
628-223 1   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-11-14   
628-223 2   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-11-14   
628-223 3   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-11-14   
628-223 4   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-11-14   
628-223 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-11-14   
628-223 6   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2015-11-13   
628-223 7   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-11-14   
628-223 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-11-14   
628-223 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-11-14   
628-225 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
628-225 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2015-11-16   
628-225 1   981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-07-13   
628-225 2   981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-07-13   
628-225 3   649C ONVOY, LLC - CA 722   2016-07-17   
628-225 4   649C ONVOY, LLC - CA 722   2016-07-17   
628-225 5   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-07-19   
628-225 6   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-07-13   
628-225 7   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-07-13   
628-225 8   6529 T-MOBILE USA, INC. 722   2016-07-12   
628-225 9   6529 T-MOBILE USA, INC. 722   2016-07-12   
628-228 A SNFCCA01DS2  9740 PACIFIC BELL 722      
628-228 0   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2016-07-03   
628-228 1   6529 T-MOBILE USA, INC. 722   2016-07-08   
628-228 2   9740 PACIFIC BELL 722   2016-03-19   
628-228 3   9740 PACIFIC BELL 722   2016-03-19   
628-228 4   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2016-03-20   
628-228 5   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2016-03-20   
628-228 6   649C ONVOY, LLC - CA 722   2017-11-12   
628-228 7   6529 T-MOBILE USA, INC. 722   2016-07-08   
628-228 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-06-02   
628-228 9   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2016-06-02   
628-230 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
628-230 0   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2018-03-04   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 >>

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.