Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 248 [Rate centres in NPA 248] [Dial plan for NPA 248]

NXX: 434

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
248-434 A Troy MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
248-434 0 Troy MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
248-434 1 Troy MI   145J TERRA NOVA TELECOM INC. 340   2025-01-03   
248-434 5 Troy MI   2550 123.NET, LLC 340   2003-01-24   
248-434 6 Troy MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2004-07-31   
248-434 7 Troy MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2004-10-10   
248-434 8 Troy MI   543C ONVOY, LLCV - MI 340   2007-05-28   
248-434 9 Troy MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2025-07-26   

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

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