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: 858 [Rate centres in NPA 858] [Dial plan for NPA 858]

NXX: 227

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-227 A Rancho Santa Fe CA SNDJCA05DS0  7262 XO CALIFORNIA, INC. 732      
858-227 0 Rancho Santa Fe CA SNDJCA05DS0  7262 XO CALIFORNIA, INC. 732      
858-227 1 Rancho Santa Fe CA SNDJCA05DS0  7262 XO CALIFORNIA, INC. 732      
858-227 2 Rancho Santa Fe CA SNDJCA05DS0  7262 XO CALIFORNIA, INC. 732   2005-06-17   
858-227 3 Rancho Santa Fe CA SNDICAETDS0  7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 732   2005-05-27   
858-227 4 Rancho Santa Fe CA SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2004-04-10   
858-227 5 Rancho Santa Fe CA SNDJCA05DS0  7262 XO CALIFORNIA, INC. 732   2005-06-17   
858-227 6 Rancho Santa Fe CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2016-10-30   
858-227 7 Rancho Santa Fe CA SNDGCA02XIZ  981E BANDWIDTH.COM CLEC, LLC - CA 732   2021-01-09   
858-227 8 Rancho Santa Fe CA SNDJCA05DS0  7262 XO CALIFORNIA, INC. 732   2005-06-17   
858-227 9 Rancho Santa Fe CA SNDJCA05DS0  7262 XO CALIFORNIA, INC. 732   2005-06-17   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.