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: 321

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
858-321 A San Diego: San Diego DA CA SNDGCA0284Z  4733 PAETEC COMMUNICATIONS, INC. - CA 732      
858-321 0 San Diego: San Diego DA CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2022-10-17   
858-321 1 San Diego: San Diego DA CA SNDGCA0284Z  4733 PAETEC COMMUNICATIONS, INC. - CA 732   2022-08-14   
858-321 2 San Diego: San Diego DA CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2022-08-22   
858-321 3 San Diego: San Diego DA CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2022-08-22   
858-321 4 San Diego: San Diego DA CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2022-08-22   
858-321 5 San Diego: San Diego DA CA SNDACAGLDS2  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 732   2023-10-06   
858-321 6 San Diego: San Diego DA CA SNDGCA02XIZ  981E BANDWIDTH.COM CLEC, LLC - CA 732   2022-09-25   
858-321 7 San Diego: San Diego DA CA SNDGCA02XIZ  981E BANDWIDTH.COM CLEC, LLC - CA 732   2022-09-25   
858-321 8 San Diego: San Diego DA CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2023-09-10   
858-321 9 San Diego: San Diego DA CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2023-09-10   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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