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: 562 [Rate centres in NPA 562] [Dial plan for NPA 562]

NXX: 378

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
562-378 A Whittier CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
562-378 0 Whittier CA COVNCAXFX3Y  649C ONVOY, LLC - CA 730   2019-03-24   
562-378 1 Whittier CA SHOKCA02IMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2017-06-01   
562-378 2 Whittier CA SHOKCA02IMD  7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2017-06-01   
562-378 3 Whittier CA COVNCAXFX3Y  649C ONVOY, LLC - CA 730   2019-03-24   
562-378 4 Whittier CA COVNCAXFX3Y  649C ONVOY, LLC - CA 730   2019-03-24   
562-378 5 Whittier CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730   2019-02-28   
562-378 6 Whittier CA COVNCAXFX3Y  649C ONVOY, LLC - CA 730   2019-03-24   
562-378 7 Whittier CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2020-04-06   
562-378 8 Whittier CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2020-12-02   
562-378 9 Whittier CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2017-03-18   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.