Local Calling Guide

Area code/prefix search

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NPA: 503 [Rate centres in NPA 503] [Dial plan for NPA 503]

NXX: 824

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-824 A Colton OR COTNORXA0MD  2364 COLTON TEL. CO. 672      

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

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