Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 630 [Rate centres in NPA 630] [Dial plan for NPA 630]

NXX: 251

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
630-251 A West Chicago IL BFGVILASG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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