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: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 808

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-808 A Plano IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
331-808 0 Plano IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2015-08-06   
331-808 1 Plano IL CHCGIL24DS6  224C ONVOY, LLC 358   2016-04-06   
331-808 2 Plano IL CHCGIL24DS6  224C ONVOY, LLC 358   2016-04-06   
331-808 3 Plano IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2016-07-11   
331-808 4 Plano IL CHCGIL24DS6  224C ONVOY, LLC 358   2019-03-01   
331-808 5 Plano IL CHCGIL24DS6  224C ONVOY, LLC 358   2019-09-06   
331-808 6 Plano IL CHCGIL24DS6  224C ONVOY, LLC 358   2021-02-12   
331-808 7 Plano IL CHCGIL24XMD  495J STRATUS NETWORKS 358   2020-09-26   
331-808 8 Plano IL CHCGILWUJMD  073H TELNYX LLC 358   2018-06-28   
331-808 9 Plano IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2016-11-19   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.