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: 729

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
951-729 A Arlington CA LSANCARCD9S  4129 O1 COMMUNICATIONS, INC. - CA 730      
951-729 0 Arlington CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2009-09-14   
951-729 1 Arlington CA   515J IP HORIZON LLC 730      
951-729 2 Arlington CA   515J IP HORIZON LLC 730      
951-729 3 Arlington CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2005-09-25   
951-729 4 Arlington CA   515J IP HORIZON LLC 730      
951-729 5 Arlington CA RVSDCAQUPS0  776C CHARTER FIBERLINK CA-CCO, LLC - CA 730   2009-04-05   
951-729 6 Arlington CA ANHMCA01XEY  516C AT&T CORP. 730   2006-06-30   
951-729 7 Arlington CA LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730   2006-05-25   
951-729 8 Arlington CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2006-10-01   
951-729 9 Arlington CA RVSDCAYAGT1  6529 T-MOBILE USA, INC. 730   2006-10-28   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.