Local Calling Guide

Area code/prefix search

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

NXX: 633

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
503-633 A St Paul OR STPLORXXDS1  2396 ST. PAUL COOP. TEL. ASSN. 672      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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