Local Calling Guide

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NPA: 331 [Rate centres in NPA 331] [Dial plan for NPA 331]

NXX: 388

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-388 A Sugar Grove IL CHCGILWURMD  965H FRACTEL, LLC 358      
331-388 0 Sugar Grove IL CHCGILCNHMD  073H TELNYX LLC 358   2022-12-05   
331-388 1 Sugar Grove IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2023-02-11   
331-388 2 Sugar Grove IL ELGNILOTGT5  6529 T-MOBILE USA, INC. 358   2023-02-11   
331-388 3 Sugar Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-07-03   
331-388 4 Sugar Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-03-14   
331-388 7 Sugar Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2022-02-27   
331-388 8 Sugar Grove IL   965H FRACTEL, LLC 358   2021-03-26   
331-388 9 Sugar Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-09-07   

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

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