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.

Redwood City, CA

1 2 3 4 5 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
650-207 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
650-208 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
650-216 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-216 0 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-216 1 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-216 2 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-216 3 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-216 4 SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
650-216 5 SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2021-07-23   
650-216 6 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-216 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-12-23   
650-216 8 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2014-08-11   
650-216 9 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-241 A SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-241 0 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-07-18   
650-241 1 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-07-18   
650-241 2 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-05-28   
650-241 3 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2005-07-18   
650-241 4 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-241 5 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2015-12-21   
650-241 6 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2008-11-16   
650-241 7 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722   2007-12-27   
650-241 8 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2009-11-09   
650-241 9 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2009-11-09   
650-249 A SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
650-249 0 SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
650-249 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
650-249 2 SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
650-249 3 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
650-249 4 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2003-01-09   
650-249 5 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2005-09-16   
650-249 6 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2007-09-25   
650-249 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2008-02-09   
650-249 8 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2010-07-18   
650-249 9 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-01-19   
650-257 A   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-257 0 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2011-04-17   
650-257 1   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-257 2 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2015-01-19   
650-257 3 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2009-04-06   
650-257 4 SNJUCACL8MD  145J TERRA NOVA TELECOM INC. 722   2024-12-27   
650-257 5   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-257 6   829J PAETEC ITEL, LLC 722   2009-04-28   
650-257 7 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2007-10-22   
650-257 8 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-257 9 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-260 A SNFCCA01DS5  7421 AT&T - LOCAL 722      
650-260 0 SNFCCA01XGX  516C AT&T CORP. 722   2016-06-09   
650-260 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2007-09-07   
650-260 2 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2005-09-26   
650-260 3 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-01-08   
650-260 4 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-01-08   
650-260 5 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-01-08   
650-260 6 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2022-09-25   
650-260 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2009-12-20   
650-260 8 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-01-08   
650-260 9 SNFCCA01DS5  7421 AT&T - LOCAL 722      
650-261 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-277 A SNFCCA21XCZ  6967 33 WIRELESS INC. 722      
650-298 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-298 0 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-298 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-08-13   
650-298 2 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2021-08-13   
650-298 3 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-298 4 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-298 5 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-298 6 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-298 7 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-298 8 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-298 9 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-299 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-306 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-361 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-362 A HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-362 0 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-362 1 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-362 2 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-362 3 SNFCCA01XGX  516C AT&T CORP. 722   2007-02-19   
650-362 4 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2011-10-03   
650-362 5 SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2008-12-08   
650-362 6 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722   2007-05-17   
650-362 7 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-12-23   
650-362 8 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2011-09-21   
650-362 9 HYWRCA115MD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 722      
650-363 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-364 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-365 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-366 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-367 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-368 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-369 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-381 A RDCYCA01DS0  9740 PACIFIC BELL 722      
650-381 0 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2015-07-31   
650-381 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2015-07-31   
650-381 2 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-381 3 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-381 4 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2016-07-15   
650-381 5 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-381 6 RDCYCA01DS0  9740 PACIFIC BELL 722      
650-381 7 RDCYCA01DS0  9740 PACIFIC BELL 722      

1 2 3 4 5 >>

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.