Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA: 918 [Rate centres in NPA 918] [Dial plan for NPA 918]

NXX: 870

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
918-870 A Jenks OK TULSOKTBXXZ  624H ONVOY SPECTRUM, LLC 538   2025-02-20   
918-870 0 Jenks OK   624H ONVOY SPECTRUM, LLC 538   2025-02-20   
918-870 1 Jenks OK   624H ONVOY SPECTRUM, LLC 538   2025-02-20   
918-870 2 Jenks OK   409F ONVOY, LLC - OK 538   2026-01-11   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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