Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 313 [Rate centres in NPA 313] [Dial plan for NPA 313]

NXX: 925

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-925 A Detroit Zone 2 MI DTRTMIPEDS0  9323 MICHIGAN BELL TEL CO 340      
313-925 0 Detroit Zone 2 MI DTRTMIPEDS0  9323 MICHIGAN BELL TEL CO 340      
313-925 1 Detroit Zone 2 MI DTRTMIPEDS0  9323 MICHIGAN BELL TEL CO 340      
313-925 3 Detroit Zone 2 MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2010-12-10   
313-925 4 Detroit Zone 2 MI SFLDMIMKEMD  490J BOOST SUBSCRIBERCO L.L.C. 340   2024-12-14   
313-925 5 Detroit Zone 2 MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2010-10-20   
313-925 6 Detroit Zone 2 MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2010-10-20   
313-925 7 Detroit Zone 2 MI SFLDMIDNDS6  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2010-11-19   
313-925 8 Detroit Zone 2 MI DTRTMIPEDS0  9323 MICHIGAN BELL TEL CO 340      
313-925 9 Detroit Zone 2 MI DTRTMIPEDS0  9323 MICHIGAN BELL TEL CO 340      

Last updated: Sat, 04 Jul 2026 13:07:56 UTC

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