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: 306

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
331-306 A Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358      
331-306 0 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-10-19   
331-306 1 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-10-19   
331-306 2 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-10-19   
331-306 3 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-10-19   
331-306 4 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-10-19   
331-306 5 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-10-19   
331-306 6 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-10-19   
331-306 7 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-10-19   
331-306 8 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-10-19   
331-306 9 Downers Grove IL CHCGIL24DS6  224C ONVOY, LLC 358   2023-10-19   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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