Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 628 [Rate centres in NPA 628] [Dial plan for NPA 628]

NXX: 307

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
628-307 A Ignacio CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2024-08-03   
628-307 1 Ignacio CA   624H ONVOY SPECTRUM, LLC 722   2025-01-30   
628-307 7 Ignacio CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2024-11-11   
628-307 8 Ignacio CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2024-11-11   
628-307 9 Ignacio CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2024-08-03   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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