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: 267

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
447-267 A Oakford IL SPFDILES7MD  224C ONVOY, LLC 374      
447-267 0 Oakford IL SPFDILESXYX  495J STRATUS NETWORKS 374   2021-06-26   
447-267 1 Oakford IL SPFDILESXQX  624H ONVOY SPECTRUM, LLC 374   2024-05-25   
447-267 2 Oakford IL SPFDILSDX5X  516C AT&T CORP. 374   2024-09-12   
447-267 4 Oakford IL SPFDILES7MD  224C ONVOY, LLC 374   2021-06-25   
447-267 7 Oakford IL SPFDILES7MD  224C ONVOY, LLC 374   2021-07-05   
447-267 9 Oakford IL SPFDILESDS3  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 374   2024-02-20   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.