Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 734 [Rate centres in NPA 734] [Dial plan for NPA 734]

NXX: 642

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
734-642 A Trenton MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
734-642 0 Trenton MI   939H COMMIO, LLC 340   2021-10-14   
734-642 1 Trenton MI   543C ONVOY, LLCV - MI 340   2023-03-12   
734-642 2 Trenton MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
734-642 3 Trenton MI   624H ONVOY SPECTRUM, LLC 340   2021-11-25   
734-642 4 Trenton MI   624H ONVOY SPECTRUM, LLC 340   2021-11-25   
734-642 5 Trenton MI   5562 METROPCS, INC. 340   2004-02-24   
734-642 6 Trenton MI   5562 METROPCS, INC. 340   2004-02-24   
734-642 7 Trenton MI   5562 METROPCS, INC. 340   2004-03-09   
734-642 8 Trenton MI   5562 METROPCS, INC. 340   2005-02-12   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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