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: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
447-231 A Chatham IL SPFDILGI0MD  939H COMMIO, LLC 374      
447-231 0 Chatham IL SPFDILMBWMD  073H TELNYX LLC 374   2023-11-11   
447-231 1 Chatham IL SPFDILGI0MD  939H COMMIO, LLC 374   2022-06-16   
447-231 8 Chatham IL   939H COMMIO, LLC 374   2024-02-02   
447-231 9 Chatham IL   939H COMMIO, LLC 374   2024-02-02   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.