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: 493

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-493 A Detroit Zone 4 MI DTRTMIVTDS0  9323 MICHIGAN BELL TEL CO 340      
313-493 0 Detroit Zone 4 MI DTRTMIVTDS0  9323 MICHIGAN BELL TEL CO 340      
313-493 1 Detroit Zone 4 MI DTRTMIVTDS0  9323 MICHIGAN BELL TEL CO 340      
313-493 2 Detroit Zone 4 MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2012-12-19   
313-493 3 Detroit Zone 4 MI DTRTMIVTDS0  9323 MICHIGAN BELL TEL CO 340      
313-493 4 Detroit Zone 4 MI DTRTMIVTDS0  9323 MICHIGAN BELL TEL CO 340      
313-493 5 Detroit Zone 4 MI DTRTMIVWDMD  624H ONVOY SPECTRUM, LLC 340   2021-11-13   
313-493 6 Detroit Zone 4 MI DTRTMIVTDS0  9323 MICHIGAN BELL TEL CO 340      
313-493 7 Detroit Zone 4 MI DTRTMIVTDS0  9323 MICHIGAN BELL TEL CO 340      
313-493 8 Detroit Zone 4 MI DTRTMIVTDS0  9323 MICHIGAN BELL TEL CO 340      
313-493 9 Detroit Zone 4 MI DTRTMIVTDS0  9323 MICHIGAN BELL TEL CO 340      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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