Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 580 [Rate centres in NPA 580] [Dial plan for NPA 580]

NXX: 474

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-474 A Byron OK BYRNOKXA1MD  1831 SOUTH CENTRAL TEL ASSN INC 536      

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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