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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Cameron, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
539-213 A TULSOKTBX6Z  508J CENTURYLINK COMMUNICATIONS, LLC 538      
539-213 2   5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538   2019-09-15   
539-213 3   490J DISH WIRELESS, LLC 538   2022-09-17   
539-213 7   508J CENTURYLINK COMMUNICATIONS, LLC 538   2017-06-08   
918-654 A CMRNOKXARS1  2011 OKLAHOMA WINDSTREAM, INC. 538      

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

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