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.

Switch: PLDNLAXA2MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
870-606 A North Springhill AR 508J CENTURYLINK COMMUNICATIONS, LLC 486      
870-606 7 North Springhill AR 508J CENTURYLINK COMMUNICATIONS, LLC 486   2015-01-20   
903-672 7 Vivian TX 508J CENTURYLINK COMMUNICATIONS, LLC 486   2015-09-29   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.