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: 452

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-452 A Buena Park CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-452 0 Buena Park CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2020-10-22   
657-452 1 Buena Park CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2021-04-10   
657-452 2 Buena Park CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2021-04-10   
657-452 3 Buena Park CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2021-07-22   
657-452 4 Buena Park CA   6529 T-MOBILE USA, INC. 730   2024-05-23   
657-452 5 Buena Park CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2020-12-04   
657-452 6 Buena Park CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2020-12-04   
657-452 7 Buena Park CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2021-07-22   
657-452 8 Buena Park CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2021-03-25   
657-452 9 Buena Park CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2021-03-25   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.