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: 837

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-837 A Tecumseh MI SFLDMIMKBMD  516J TON80 COMMUNICATIONS, LLC 340      
517-837 2 Tecumseh MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2023-07-02   
517-837 4 Tecumseh MI SFLDMIMKBMD  516J TON80 COMMUNICATIONS, LLC 340   2022-03-16   
517-837 7 Tecumseh MI ADRNMIXGOMD  543C ONVOY, LLCV - MI 340   2022-12-02   
517-837 8 Tecumseh MI PLMOMIFAFMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2023-04-08   
517-837 9 Tecumseh MI ADRNMIXGMMD  624H ONVOY SPECTRUM, LLC 340   2024-10-28   

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

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