Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 442 [Rate centres in NPA 442] [Dial plan for NPA 442]

NXX: 304

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
442-304 A Eagle Mountain CA   649C ONVOY, LLC - CA 973   2025-04-20   
442-304 0 Eagle Mountain CA   649C ONVOY, LLC - CA 973   2023-07-22   
442-304 1 Eagle Mountain CA   649C ONVOY, LLC - CA 973   2021-08-09   
442-304 2 Eagle Mountain CA   624H ONVOY SPECTRUM, LLC 973   2024-05-29   
442-304 3 Eagle Mountain CA   649C ONVOY, LLC - CA 973   2020-05-05   
442-304 4 Eagle Mountain CA   649C ONVOY, LLC - CA 973   2020-05-05   
442-304 5 Eagle Mountain CA   649C ONVOY, LLC - CA 973   2021-03-04   
442-304 6 Eagle Mountain CA   649C ONVOY, LLC - CA 973   2021-03-04   
442-304 8 Eagle Mountain CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 973   2020-09-04   

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

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