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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Baron, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
539-819 A TULTOKCL8MD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538      
539-819 0   119F BANDWIDTH.COM CLEC, LLC - OK 538   2019-12-06   
539-819 1   119F BANDWIDTH.COM CLEC, LLC - OK 538   2022-01-30   
539-819 2   5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538   2017-06-30   
539-819 3   119F BANDWIDTH.COM CLEC, LLC - OK 538   2021-09-23   
539-819 8   624H ONVOY SPECTRUM, LLC 538   2025-01-23   
918-778 A BARNOKXARP0  2011 OKLAHOMA WINDSTREAM, INC. 538      

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

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