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.

Hayward, CA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
510-370 1 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2012-06-04   
510-370 2 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2012-06-04   
510-370 3 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2012-06-04   
510-370 4 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2012-06-04   
510-370 5 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2012-06-04   
510-370 6 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2012-06-04   
510-370 7 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2012-06-04   
510-370 8 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2012-06-04   
510-370 9 SNJUCACLDS1  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 722   2012-06-04   
510-372 A SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-372 0 SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-372 1 SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-372 2 SNFCCAMKDS3  649C ONVOY, LLC - CA 722      
510-372 3 OKLECAZVGT0  5562 METROPCS, INC. 722   2004-05-14   
510-372 4 OKLECAZVGT0  5562 METROPCS, INC. 722   2004-05-14   
510-372 5 OKLECAZVGT0  5562 METROPCS, INC. 722   2004-05-14   
510-372 6 OKLECAZVGT0  5562 METROPCS, INC. 722   2004-05-14   
510-372 7 OKLECAZVGT0  5562 METROPCS, INC. 722   2004-05-14   
510-372 8 SNJSCAYB0MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 722      
510-372 9 SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2020-11-05   
510-397 A OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722      
510-397 0 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2008-10-11   
510-397 1 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2008-10-11   
510-397 2 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2008-10-11   
510-397 3 SNFCCAMMDS7  258E YMAX COMMUNICATIONS CORP. - CA 722   2008-10-18   
510-397 4 SNFCCAMMDS7  258E YMAX COMMUNICATIONS CORP. - CA 722   2008-10-18   
510-397 5 SNFCCAMMDS7  258E YMAX COMMUNICATIONS CORP. - CA 722   2008-10-18   
510-397 6 OKLDCA03XOY  318J COMCAST IP PHONE, LLC 722   2009-08-06   
510-397 7 SNFCCAMMDS7  258E YMAX COMMUNICATIONS CORP. - CA 722   2010-04-22   
510-397 8 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2009-01-13   
510-397 9 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2009-01-13   
510-398 A SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
510-398 0 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2012-10-12   
510-398 1 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2012-10-15   
510-398 2 SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2012-10-15   
510-398 3 SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2012-12-29   
510-398 4 SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2013-01-17   
510-398 5 SNRTCAHFDS0  433E SONIC TELECOM, LLC - CA 722   2012-12-22   
510-398 6 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2013-01-12   
510-398 7 OKLDCAMP1MD  4733 PAETEC COMMUNICATIONS, INC. - CA 722   2013-05-22   
510-398 8 SNFCCA01XGX  516C AT&T CORP. 722   2012-11-08   
510-398 9 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2013-03-24   
510-415 A OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
510-427 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
510-432 A SNFCCA01GT0  6010 NEW CINGULAR WIRELESS PCS, LLC 722      
510-460 A HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722      
510-460 0 HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2010-04-02   
510-460 1 SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2010-06-13   
510-460 2 OKLECAZVGT0  5562 METROPCS, INC. 722   2010-05-29   
510-460 3 OKLDCAMP1MD  4733 PAETEC COMMUNICATIONS, INC. - CA 722   2010-05-27   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 >>

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.