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.

NPA: 539 [Rate centres in NPA 539] [Dial plan for NPA 539]

NXX: 635

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
539-635 A Savanna OK TULSOKTBXFY  119F BANDWIDTH.COM CLEC, LLC - OK 538      
539-635 0 Savanna OK TULSOKTBXFY  119F BANDWIDTH.COM CLEC, LLC - OK 538   2020-03-20   
539-635 1 Savanna OK TULSOKTBXXZ  624H ONVOY SPECTRUM, LLC 538   2025-01-23   

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.