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: 281

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
657-281 A Orange CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
657-281 0 Orange CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-281 1 Orange CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730      
657-281 2 Orange CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730      
657-281 3 Orange CA ONTRCAXPXAY  252F WIDE VOICE, LLC - CA 730      
657-281 4 Orange CA ANHMCANG2MD  4733 PAETEC COMMUNICATIONS, INC. - CA 730      
657-281 5 Orange CA ANHMCACLCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 730      
657-281 6 Orange CA   321J HD CARRIER LLC 730      
657-281 7 Orange CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730      
657-281 8 Orange CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      
657-281 9 Orange CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.