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: 336

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-336 A Aurora IL CHCGILWURMD  965H FRACTEL, LLC 358      
331-336 0 Aurora IL CHCGIL24DS6  224C ONVOY, LLC 358   2021-09-14   
331-336 1 Aurora IL CHCGIL24DS6  224C ONVOY, LLC 358   2021-09-14   
331-336 2 Aurora IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2020-02-24   
331-336 3 Aurora IL WCHCILBFGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2020-02-24   
331-336 4 Aurora IL CHCGIL24DS6  224C ONVOY, LLC 358   2020-10-16   
331-336 5 Aurora IL CHCGIL24DS6  224C ONVOY, LLC 358   2020-03-14   
331-336 6 Aurora IL CHCGIL24DS6  224C ONVOY, LLC 358   2020-03-14   
331-336 7 Aurora IL CHCGIL24DS6  224C ONVOY, LLC 358   2020-10-16   
331-336 8 Aurora IL CHCGILWURMD  965H FRACTEL, LLC 358   2019-12-12   
331-336 9 Aurora IL CHCGIL24DS6  224C ONVOY, LLC 358   2021-09-14   

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

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