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: 447 [Rate centres in NPA 447] [Dial plan for NPA 447]

NXX: 271

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
447-271 A Liberty IL JCVLILXCDMD  224C ONVOY, LLC 376      
447-271 2 Liberty IL JCVLILXCDMD  224C ONVOY, LLC 376   2023-11-04   
447-271 3 Liberty IL JCVLILXCX6X  624H ONVOY SPECTRUM, LLC 376   2024-04-27   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.