Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 940 [Rate centres in NPA 940] [Dial plan for NPA 940]

NXX: 529

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
940-529 A Petrolia TX BYRSTXXARS0  2043 NORTH TEXAS TEL. CO. 548      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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