Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 738 [Rate centres in NPA 738] [Dial plan for NPA 738]

NXX: 666

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
738-666 A Montebello CA   649C ONVOY, LLC - CA 730   2026-02-17   
738-666 0 Montebello CA   649C ONVOY, LLC - CA 730   2026-02-17   
738-666 1 Montebello CA   649C ONVOY, LLC - CA 730   2026-02-20   
738-666 6 Montebello CA   649C ONVOY, LLC - CA 730   2026-02-17   

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

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