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: 320

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-320 A Bartlett IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-04-04   
331-320 0 Bartlett IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-04-04   
331-320 1 Bartlett IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-04-04   
331-320 2 Bartlett IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-04-04   
331-320 3 Bartlett IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-04-04   
331-320 4 Bartlett IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-04-04   
331-320 5 Bartlett IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-04-04   
331-320 6 Bartlett IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-04-04   
331-320 8 Bartlett IL CHCGIL24DS6  224C ONVOY, LLC 358   2024-05-24   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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