Local Calling Guide

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NPA: 510 [Rate centres in NPA 510] [Dial plan for NPA 510]

NXX: 274

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
510-274 A Hayward CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
510-274 0 Hayward CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722   2006-09-30   
510-274 1 Hayward CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
510-274 2 Hayward CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-06-27   
510-274 3 Hayward CA OKLECAZVGT0  5562 METROPCS, INC. 722   2007-04-19   
510-274 4 Hayward CA SNFCCA21XNZ  624H ONVOY SPECTRUM, LLC 722   2022-04-19   
510-274 5 Hayward CA SNFCCA01XGX  516C AT&T CORP. 722   2006-07-07   
510-274 6 Hayward CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722   2006-05-20   
510-274 7 Hayward CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2011-06-02   
510-274 8 Hayward CA OKLECAZVGT0  5562 METROPCS, INC. 722   2006-09-08   
510-274 9 Hayward CA OKLECAZVGT0  5562 METROPCS, INC. 722   2006-08-12   

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

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