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.

South San Francisco, CA

1 2 3 4 5 6 7 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
650-201 A OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-201 0 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2003-08-05   
650-201 1 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-201 2 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2005-08-04   
650-201 3 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-201 4 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-201 5 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-201 6 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-201 7 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-201 8 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-201 9 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-205 A SNFCCA21XEZ  6630 USA MOBILITY WIRELESS, INC. 722      
650-219 A OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-219 0 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-219 1 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-219 2 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-219 3 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-219 4 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-219 5 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-219 6 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-219 7 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-219 8 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-219 9 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-221 A MLPTCAVPAMD  0051 SHELCOMM 722   2024-11-03   
650-225 A SNBUCA02DS0  9740 PACIFIC BELL 722      
650-228 A HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-228 0 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-228 1 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-228 2 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-228 3 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2006-05-04   
650-228 4 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2003-06-11   
650-228 5 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-228 6 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2008-07-15   
650-228 7 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-228 8 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2008-06-01   
650-228 9 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2010-02-05   
650-238 A HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
650-238 0 HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
650-238 1 HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
650-238 2 HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
650-238 3 HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
650-238 4 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2003-04-13   
650-238 5 HYWRCAMCDS0  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 722      
650-238 6 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2014-06-26   
650-238 7 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2003-09-22   
650-238 8 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2003-09-22   
650-238 9 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2013-04-15   
650-243 A SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
650-243 0 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2013-04-15   
650-243 1 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2005-12-05   
650-243 2 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
650-243 3 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
650-243 4 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
650-243 5 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
650-243 6 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
650-243 7 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2004-01-12   
650-243 8 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2004-01-12   
650-243 9 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
650-244 A SNBUCA02DS1  9740 PACIFIC BELL 722      
650-246 A SNBUCA02DS1  9740 PACIFIC BELL 722      
650-246 0 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2012-10-18   
650-246 1 SNBUCA02DS1  9740 PACIFIC BELL 722      
650-246 2 SNBUCA02DS1  9740 PACIFIC BELL 722      
650-246 3 SNBUCA02DS1  9740 PACIFIC BELL 722      
650-246 4 SNBUCA02DS1  9740 PACIFIC BELL 722      
650-246 5 SNBUCA02DS1  9740 PACIFIC BELL 722      
650-246 6 SNBUCA02DS1  9740 PACIFIC BELL 722      
650-246 7 SNBUCA02DS1  9740 PACIFIC BELL 722      
650-246 8 SNBUCA02DS1  9740 PACIFIC BELL 722      
650-246 9 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2012-10-18   
650-255 A SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
650-256 A SNFCCA21XUY  9748 AMERICAN MESSAGING SERVICES, LLC 722      
650-266 A SNBUCA02DS1  9740 PACIFIC BELL 722      
650-267 A SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-267 0 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2004-08-02   
650-267 1 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2004-05-08   
650-267 2 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2004-05-03   
650-267 3 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2004-11-28   
650-267 4 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-267 5 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2004-12-09   
650-267 6 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2004-12-09   
650-267 7 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2004-02-02   
650-267 8 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2012-02-05   
650-267 9 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2007-06-10   
650-270 A OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-270 0 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2005-08-11   
650-270 1 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-270 2   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-03-15   
650-270 3 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-270 4 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-270 5 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-270 6 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-270 7 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-270 8 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-270 9 OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-273 A SNFCCAMMDS0  485E ASTOUND BROADBAND, LLC - CA 722      
650-273 0 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-12-31   
650-273 1 SNFCCAMMDS0  485E ASTOUND BROADBAND, LLC - CA 722      
650-273 2 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2004-11-24   
650-273 3 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2004-11-24   

1 2 3 4 5 6 7 >>

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.