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: 346

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-346 A La Jolla CA SNDACAGLFMD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 732      
858-346 0 La Jolla CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732      
858-346 1 La Jolla CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732      
858-346 2 La Jolla CA SNDACAGLFMD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 732      
858-346 3 La Jolla CA ESCNCAKYGT0  6529 T-MOBILE USA, INC. 732      
858-346 4 La Jolla CA SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732      
858-346 5 La Jolla CA SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732      
858-346 6 La Jolla CA SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732      
858-346 7 La Jolla CA SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732      
858-346 8 La Jolla CA SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732      
858-346 9 La Jolla CA SNDACAGLFMD  8690 GLOBAL CROSSING LOCAL SERVICES, INC. - CA 732      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.