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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: OKCZOKZCFMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
580-982 A Antlers OK 5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536      
580-982 2 Antlers OK 5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536   2012-12-03   
580-982 5 Antlers OK 5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536   2005-02-25   
580-997 8 Cherokee OK 5257 LEVEL 3 COMMUNICATIONS, LLC - OK 536   2026-04-25   

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

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