Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 517 [Rate centres in NPA 517] [Dial plan for NPA 517]

NXX: 736

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-736 A Coldwater MI GDRPMIBLX8Z  2550 123.NET, LLC 348      
517-736 0 Coldwater MI   2550 123.NET, LLC 348      
517-736 1 Coldwater MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 348   2025-06-03   
517-736 2 Coldwater MI   543C ONVOY, LLCV - MI 348   2023-04-24   
517-736 3 Coldwater MI   2550 123.NET, LLC 348   2003-03-11   
517-736 4 Coldwater MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 348   2004-11-22   
517-736 5 Coldwater MI   543C ONVOY, LLCV - MI 348   2021-11-15   
517-736 6 Coldwater MI   543C ONVOY, LLCV - MI 348   2021-11-15   
517-736 7 Coldwater MI   046L CLEAR RATE COMMUNICATIONS, LLC 348   2009-11-14   
517-736 8 Coldwater MI   624H ONVOY SPECTRUM, LLC 348   2021-06-18   
517-736 9 Coldwater MI   624H ONVOY SPECTRUM, LLC 348   2022-01-10   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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