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: 373

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
951-373 A Arlington CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730      
951-373 0 Arlington CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2011-10-24   
951-373 1 Arlington CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2022-10-22   
951-373 2 Arlington CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2011-12-24   
951-373 3 Arlington CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2011-09-30   
951-373 4 Arlington CA IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730   2011-11-11   
951-373 5 Arlington CA IRVNCASM1MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 730   2011-10-13   
951-373 6 Arlington CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2012-05-20   
951-373 7 Arlington CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2012-04-15   
951-373 8 Arlington CA RVSDCAQUPS0  776C CHARTER FIBERLINK CA-CCO, LLC - CA 730   2018-08-12   
951-373 9 Arlington CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2012-03-30   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.