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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Achille, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
580-283 A ACHLOKXARS1  1979 CHEROKEE TEL. CO. 536      
580-714 A OKCZOKZCFMD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536      
580-714 2   5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536   2018-03-01   
580-714 5   490J DISH WIRELESS, LLC 536   2023-01-15   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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