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
415-796 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
415-796 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
415-796 6   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
415-796 7   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2010-03-08   
415-796 8   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
415-796 9   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
415-800 A SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
415-800 0   829J PAETEC ITEL, LLC 722   2010-04-29   
415-800 1   981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-06-21   
415-800 2   981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-06-21   
415-800 3   981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-06-21   
415-800 4   981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-06-21   
415-800 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2010-06-10   
415-800 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2010-06-10   
415-800 7   318J COMCAST IP PHONE, LLC 722   2010-04-19   
415-800 8   318J COMCAST IP PHONE, LLC 722   2010-04-19   
415-800 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2021-05-20   
415-801 A SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
415-801 0   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-05-28   
415-801 1   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2014-05-28   
415-801 2   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-05-26   
415-801 3   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-05-26   
415-801 4   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-05-26   
415-801 5   318J COMCAST IP PHONE, LLC 722   2014-05-28   
415-801 6   649C ONVOY, LLC - CA 722   2014-05-28   
415-801 7   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2014-05-28   
415-801 8   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-05-28   
415-801 9   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-05-28   
415-802 A SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
415-802 0   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2013-07-26   
415-802 1   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2013-07-26   
415-802 2   981E BANDWIDTH.COM CLEC, LLC - CA 722   2013-07-28   
415-802 3   6529 T-MOBILE USA, INC. 722   2013-07-26   
415-802 4   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2013-07-25   
415-802 5   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2013-07-25   
415-802 6   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2013-07-25   
415-802 7   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2013-07-25   
415-802 8   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2013-07-25   
415-802 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2013-07-25   
415-803 A SNFCCA21XCZ  6967 33 WIRELESS INC. 722      
415-804 A SNFCCA21XEZ  6630 USA MOBILITY WIRELESS, INC. 722      
415-805 A HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
415-805 0   981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-02-08   
415-805 1   981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-02-08   
415-805 2   981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-02-08   
415-805 3   7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722   2014-01-06   
415-805 4   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-01-30   
415-805 5   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-01-30   
415-805 6   981E BANDWIDTH.COM CLEC, LLC - CA 722   2014-02-08   
415-805 7   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-02-07   
415-805 8   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-02-07   
415-805 9   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-03-01   
415-806 A SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
415-807 A SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
415-808 A SNFCCA21DS0  9740 PACIFIC BELL 722      
415-808 0   9740 PACIFIC BELL 722      
415-808 1   9740 PACIFIC BELL 722      
415-808 2   9740 PACIFIC BELL 722      
415-808 3   9740 PACIFIC BELL 722      
415-808 4   9740 PACIFIC BELL 722      
415-808 5   981E BANDWIDTH.COM CLEC, LLC - CA 722   2023-01-16   
415-808 6   9740 PACIFIC BELL 722      
415-808 7   9740 PACIFIC BELL 722      
415-808 8   9740 PACIFIC BELL 722      
415-808 9   5562 METROPCS, INC. 722   2018-10-07   
415-809 A SNFCCA21XEZ  6630 USA MOBILITY WIRELESS, INC. 722      
415-810 A SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
415-813 A SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
415-813 0   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2011-02-25   
415-813 1   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-02-10   
415-813 2   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-01-14   
415-813 3   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-01-14   
415-813 4   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-01-14   
415-813 5   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-01-17   
415-813 6   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-01-17   
415-813 7   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2011-02-25   
415-813 8   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2011-02-25   
415-813 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2011-02-25   
415-814 A SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
415-814 0   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-12-15   
415-814 1   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-12-15   
415-814 2   318J COMCAST IP PHONE, LLC 722   2006-08-15   
415-814 3   318J COMCAST IP PHONE, LLC 722   2006-08-15   
415-814 4   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2006-10-09   
415-814 5   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2006-10-09   
415-814 6   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2006-10-09   
415-814 7   649C ONVOY, LLC - CA 722   2005-09-24   
415-814 8   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2006-09-15   
415-814 9   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2006-12-15   
415-815 A OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2025-01-23   
415-815 0   6529 T-MOBILE USA, INC. 722   2024-07-08   
415-815 1   6529 T-MOBILE USA, INC. 722   2024-07-08   
415-815 2   433E SONIC TELECOM, LLC - CA 722   2018-12-11   
415-815 3   6529 T-MOBILE USA, INC. 722   2018-12-11   
415-815 4   6529 T-MOBILE USA, INC. 722   2024-07-08   
415-815 5   6529 T-MOBILE USA, INC. 722   2018-12-13   
415-815 6   6529 T-MOBILE USA, INC. 722   2018-12-13   
415-815 7   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2011-02-25   
415-815 8   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2011-02-07   
415-815 9   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2011-02-25   

<< 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: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.