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: 951 [Rate centres in NPA 951] [Dial plan for NPA 951]

NXX: 643

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
951-643 A Arlington CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
951-643 0 Arlington CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
951-643 1 Arlington CA SHOKCA022MD  576C TIME WARNER CBL INFO SVCS (CA) DBA TIME WARNER CAB 730      
951-643 2 Arlington CA LSANCAJWDS9  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 730      
951-643 3 Arlington CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
951-643 4 Arlington CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
951-643 5 Arlington CA ANHMCANG2MD  4733 PAETEC COMMUNICATIONS, INC. - CA 730      
951-643 6 Arlington CA LSANCAJW2MD  508J CENTURYLINK COMMUNICATIONS, LLC 730      
951-643 7 Arlington CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
951-643 8 Arlington CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
951-643 9 Arlington CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.