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: 277

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-277 A Lombard IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
331-277 0 Lombard IL CHCGILWUKMD  939H COMMIO, LLC 358   2021-10-14   
331-277 1 Lombard IL CHCGILWUKMD  939H COMMIO, LLC 358   2021-10-14   
331-277 2 Lombard IL CHCGILWUKMD  939H COMMIO, LLC 358   2021-10-14   
331-277 3 Lombard IL CHCGILWUKMD  939H COMMIO, LLC 358   2021-10-14   
331-277 4 Lombard IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2022-02-21   
331-277 5 Lombard IL CHCGILMF2MD  6529 T-MOBILE USA, INC. 358   2022-04-21   
331-277 6 Lombard IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2022-11-08   
331-277 7 Lombard IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2022-11-08   
331-277 8 Lombard IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2021-12-31   
331-277 9 Lombard IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2021-09-20   

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

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