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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Warner, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
539-398 A TULTOKCL8MD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538      
539-398 7 TULTOKCL8MD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538   2022-05-31   
918-463 A WRNROKXADS0  1985 CROSS TEL. CO. 538      
918-769 A TULSOKPP7MD  148G CROSS WIRELESS, L.L.C. 538      

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

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