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: 657 [Rate centres in NPA 657] [Dial plan for NPA 657]

NXX: 526

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-526 A Anaheim CA GRDNCA02KMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730      
657-526 0 Anaheim CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2021-12-10   
657-526 1 Anaheim CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-11-15   
657-526 2 Anaheim CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-11-15   
657-526 3 Anaheim CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-11-15   
657-526 4 Anaheim CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-11-15   
657-526 5 Anaheim CA LSANCA03GMD  624H ONVOY SPECTRUM, LLC 730   2021-11-15   
657-526 6 Anaheim CA GRDNCA02KMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2021-11-11   
657-526 7 Anaheim CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2021-11-19   
657-526 8 Anaheim CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2021-11-19   
657-526 9 Anaheim CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2021-12-10   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.