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: 347

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-347 A Anaheim CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      
657-347 0 Anaheim CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2021-06-11   
657-347 1 Anaheim CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730   2018-01-06   
657-347 2 Anaheim CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2018-10-29   
657-347 3 Anaheim CA LSANCAJW6MD  073H TELNYX LLC 730   2017-03-24   
657-347 4 Anaheim CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2017-02-09   
657-347 5 Anaheim CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2018-10-29   
657-347 6 Anaheim CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2019-02-24   
657-347 7 Anaheim CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2016-12-10   
657-347 8 Anaheim CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2016-12-10   
657-347 9 Anaheim CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2016-12-10   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.