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: 547

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-547 A Detroit Zone 5 MI SFLDMIMKDMD  321J HD CARRIER LLC 340      
313-547 0 Detroit Zone 5 MI   939H COMMIO, LLC 340   2021-08-29   
313-547 1 Detroit Zone 5 MI   939H COMMIO, LLC 340   2021-08-29   
313-547 2 Detroit Zone 5 MI   939H COMMIO, LLC 340   2021-08-29   
313-547 3 Detroit Zone 5 MI   939H COMMIO, LLC 340   2021-08-29   
313-547 4 Detroit Zone 5 MI   543C ONVOY, LLCV - MI 340   2021-07-25   
313-547 5 Detroit Zone 5 MI   543C ONVOY, LLCV - MI 340   2021-07-25   
313-547 6 Detroit Zone 5 MI   543C ONVOY, LLCV - MI 340   2021-07-25   
313-547 7 Detroit Zone 5 MI   543C ONVOY, LLCV - MI 340   2021-07-25   
313-547 8 Detroit Zone 5 MI   939H COMMIO, LLC 340   2021-08-29   
313-547 9 Detroit Zone 5 MI   321J HD CARRIER LLC 340   2021-07-24   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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