Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 572 [Rate centres in NPA 572] [Dial plan for NPA 572]

NXX: 279

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
572-279 A Oklahoma City OK   128L E. RITTER COMMUNICATIONS, LLC 536   2026-02-19   
572-279 1 Oklahoma City OK   128L E. RITTER COMMUNICATIONS, LLC 536   2026-02-19   

Last updated: Sun, 17 May 2026 03:26:51 UTC

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