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.

Webbers Falls, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
539-636 A TULTOKCL8MD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538      
539-636 2 TULTOKCL8MD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538   2017-11-30   
539-636 6   145J TERRA NOVA TELECOM INC. 538   2025-07-12   
918-464 A WBFLOKXADS0  1985 CROSS TEL. CO. 538      

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.