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: 946

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-946 A Glen Ellyn IL CHCGILWURMD  965H FRACTEL LLC 358      
331-946 0 Glen Ellyn IL   495J STRATUS NETWORKS 358   2020-10-02   
331-946 1 Glen Ellyn IL   566J RADIANTIQ LLC 358   2021-05-14   
331-946 3 Glen Ellyn IL   965H FRACTEL LLC 358   2020-09-11   
331-946 4 Glen Ellyn IL   506J TWILIO INTERNATIONAL INC 358   2021-04-13   
331-946 5 Glen Ellyn IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2020-12-14   
331-946 6 Glen Ellyn IL   224C ONVOY, LLC 358   2020-09-12   
331-946 7 Glen Ellyn IL   224C ONVOY, LLC 358   2020-10-15   
331-946 8 Glen Ellyn IL   224C ONVOY, LLC 358   2020-10-15   
331-946 9 Glen Ellyn IL   224C ONVOY, LLC 358   2020-09-12   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.