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: 220

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
539-220 A Heavener OK TULSOKTBX6Z  508J CENTURYLINK COMMUNICATIONS, LLC 538      
539-220 3 Heavener OK TULTOKCL8MD  5257 LEVEL 3 COMMUNICATIONS, LLC - OK 538   2019-03-23   
539-220 6 Heavener OK TULSOKTBX8Y  530C TELEPORT COMMUNICATIONS AMERICA OK - LLC 538   2019-10-04   
539-220 7 Heavener OK TULSOKTBX6Z  508J CENTURYLINK COMMUNICATIONS, LLC 538   2017-06-08   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.