Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 788

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-788 A Geneva IL CHCGILWURMD  965H FRACTEL, LLC 358      
331-788 0 Geneva IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2021-07-24   
331-788 1 Geneva IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2021-07-24   
331-788 2 Geneva IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2021-07-24   
331-788 3 Geneva IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2021-07-24   
331-788 4 Geneva IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2021-07-24   
331-788 5 Geneva IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2021-12-25   
331-788 6 Geneva IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2021-11-26   
331-788 8 Geneva IL CHCGILWURMD  965H FRACTEL, LLC 358   2021-03-26   
331-788 9 Geneva IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2021-11-26   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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