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: 399

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-399 A Coronado CA SNDGCA0263Z  965H FRACTEL, LLC 732      
858-399 0 Coronado CA   6529 T-MOBILE USA, INC. 732   2021-03-28   
858-399 1 Coronado CA   6529 T-MOBILE USA, INC. 732   2021-03-28   
858-399 2 Coronado CA   6529 T-MOBILE USA, INC. 732   2021-03-28   
858-399 3 Coronado CA   6529 T-MOBILE USA, INC. 732   2021-03-28   
858-399 4 Coronado CA   373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 732   2021-05-29   
858-399 5 Coronado CA   6529 T-MOBILE USA, INC. 732   2021-05-08   
858-399 6 Coronado CA   6529 T-MOBILE USA, INC. 732   2021-05-08   
858-399 7 Coronado CA   6529 T-MOBILE USA, INC. 732   2021-05-08   
858-399 8 Coronado CA   073H TELNYX LLC 732   2021-03-28   
858-399 9 Coronado CA   965H FRACTEL, LLC 732   2021-03-27   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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