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: 356

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-356 A Bartlett IL CHCGILWURMD  965H FRACTEL, LLC 358      
331-356 0 Bartlett IL CHCGIL24MMD  515J IP HORIZON LLC 358   2021-06-13   
331-356 1 Bartlett IL CHCGILWUIMD  197D VONAGE AMERICA LLC 358   2020-10-15   
331-356 2 Bartlett IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2021-07-24   
331-356 3 Bartlett IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2021-07-24   
331-356 4 Bartlett IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2021-07-24   
331-356 5 Bartlett IL CHCGILWUIMD  197D VONAGE AMERICA LLC 358   2020-10-15   
331-356 6 Bartlett IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2021-07-24   
331-356 7 Bartlett IL CHCGILWURMD  965H FRACTEL, LLC 358   2019-12-10   
331-356 8 Bartlett IL CHCGILWURMD  965H FRACTEL, LLC 358   2019-12-10   
331-356 9 Bartlett IL CHCGILWURMD  965H FRACTEL, LLC 358   2020-08-07   

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

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