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: 607

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
580-607 A Headrick OK OKCYOKCEXWZ  515J IP HORIZON LLC 536      
580-607 1 Headrick OK OKCYOKCEXWZ  515J IP HORIZON LLC 536   2026-05-03   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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