Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Crowder, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
918-334 A CRWROKXADS1  1974 CANADIAN VALLEY TEL. CO. 538      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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