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: 900

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-900 A Elmhurst IL CHCGILWURMD  965H FRACTEL, LLC 358      
331-900 0 Elmhurst IL   965H FRACTEL, LLC 358   2019-10-01   
331-900 1 Elmhurst IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2020-07-01   
331-900 2 Elmhurst IL CHCGIL24MMD  515J IP HORIZON LLC 358   2021-06-14   
331-900 3 Elmhurst IL CHCGIL24DS6  224C ONVOY, LLC 358   2019-10-04   
331-900 4 Elmhurst IL CHCGIL24DS6  224C ONVOY, LLC 358   2019-10-04   
331-900 5 Elmhurst IL CHCGIL24DS6  224C ONVOY, LLC 358   2019-10-04   
331-900 6 Elmhurst IL CHCGILIDXDX  624H ONVOY SPECTRUM, LLC 358   2021-06-28   
331-900 7 Elmhurst IL CHCGIL245MD  073H TELNYX LLC 358   2021-08-02   
331-900 8 Elmhurst IL CHCGILWUDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2020-09-25   
331-900 9 Elmhurst IL   965H FRACTEL, LLC 358   2019-10-01   

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

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