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: 348

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-348 A Elburn IL CHCGILWURMD  965H FRACTEL, LLC 358      
331-348 0 Elburn IL CHCGIL24XMD  495J STRATUS NETWORKS 358   2020-10-02   
331-348 1 Elburn IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2020-11-09   
331-348 2 Elburn IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2021-11-26   
331-348 3 Elburn IL CHCGILNEXIX  506J TWILIO INTERNATIONAL, INC. 358   2021-04-13   
331-348 4 Elburn IL CHCGIL24DS6  224C ONVOY, LLC 358   2021-08-09   
331-348 5 Elburn IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2021-06-28   
331-348 6 Elburn IL CHCGILWURMD  965H FRACTEL, LLC 358   2019-12-12   
331-348 7 Elburn IL CHCGIL24DS6  224C ONVOY, LLC 358   2021-08-09   
331-348 8 Elburn IL CHCGIL24DS6  224C ONVOY, LLC 358   2020-07-17   
331-348 9 Elburn IL CHCGIL24DS6  224C ONVOY, LLC 358   2020-07-17   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.