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: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
442-257 A Escondido CA SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732      
442-257 0 Escondido CA SNDICAETAMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 732   2016-01-16   
442-257 1 Escondido CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2016-04-23   
442-257 2 Escondido CA SNDGCA0268Z  318J COMCAST IP PHONE, LLC 732   2017-10-22   
442-257 3 Escondido CA SNDGCA02X5Z  9262 UTILITY TELECOM GROUP, LLC - CA 732   2015-10-16   
442-257 4 Escondido CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2016-02-07   
442-257 5 Escondido CA ESCNCAKY2MD  6529 T-MOBILE USA, INC. 732   2015-07-19   
442-257 6 Escondido CA SNDGCAJWDS0  649C ONVOY, LLC - CA 732   2015-05-18   
442-257 7 Escondido CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2020-02-23   
442-257 8 Escondido CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2015-09-16   
442-257 9 Escondido CA SNDGCA51CM3  6010 NEW CINGULAR WIRELESS PCS, LLC 732   2015-09-16   

Last updated: Tue, 15 Jul 2025 18:46:49 UTC

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