Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 858 [Rate centres in NPA 858] [Dial plan for NPA 858]

NXX: 250

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-250 A La Jolla CA SNDGCA0244Z  252F WIDE VOICE, LLC - CA 732      
858-250 0 La Jolla CA   981E BANDWIDTH.COM CLEC, LLC - CA 732   2016-09-02   
858-250 1 La Jolla CA   252F WIDE VOICE, LLC - CA 732   2016-10-20   
858-250 2 La Jolla CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2016-09-01   
858-250 3 La Jolla CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2016-09-01   
858-250 4 La Jolla CA   321J HD CARRIER LLC 732   2016-10-20   
858-250 5 La Jolla CA   321J HD CARRIER LLC 732   2016-10-20   
858-250 6 La Jolla CA   321J HD CARRIER LLC 732   2016-10-20   
858-250 7 La Jolla CA   321J HD CARRIER LLC 732   2016-10-20   
858-250 8 La Jolla CA   321J HD CARRIER LLC 732   2016-10-20   
858-250 9 La Jolla CA   6529 T-MOBILE USA, INC. 732   2016-10-12   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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