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: 239

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
447-239 A Springfield IL SPFDILGI6MD  829J PAETEC ITEL, LLC 374   2024-12-10   
447-239 1 Springfield IL SPFDILGI6MD  829J PAETEC ITEL, LLC 374   2022-10-23   
447-239 8 Springfield IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 374   2025-04-28   
447-239 9 Springfield IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 374   2025-04-28   

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.