Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 975 [Rate centres in NPA 975] [Dial plan for NPA 975]

NXX: 444

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
975-444 A Dearborn MO   093F ONVOY, LLC - MO 524   2025-09-08   
975-444 0 Dearborn MO   093F ONVOY, LLC - MO 524   2025-09-08   
975-444 4 Dearborn MO   093F ONVOY, LLC - MO 524   2025-09-08   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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