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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Stuart, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
539-899 A TULTOKCL8MD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538      
539-899 2 TULTOKCL8MD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538   2018-03-01   
539-899 9   145J TERRA NOVA TELECOM INC. 538   2025-07-12   
918-546 A STRTOKXADS0  1979 CHEROKEE TEL. CO. 538      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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