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.

NPA: 925 [Rate centres in NPA 925] [Dial plan for NPA 925]

NXX: 536

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-536 A Concord CA SNJUCACL3MD  073H TELNYX LLC 722      
925-536 0 Concord CA SNJUCACL3MD  073H TELNYX LLC 722   2017-05-01   
925-536 1 Concord CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2017-06-18   
925-536 2 Concord CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2017-06-17   
925-536 3 Concord CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2017-05-02   
925-536 4 Concord CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2018-01-20   
925-536 5 Concord CA OKLECAZVGT0  5562 METROPCS, INC. 722   2018-04-17   
925-536 6 Concord CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-10-16   
925-536 7 Concord CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-11-20   
925-536 8 Concord CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-12-27   
925-536 9 Concord CA HYWRCAMCDMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 722   2017-07-06   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.