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: 251

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-251 A Detroit Zone 6 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
313-251 0 Detroit Zone 6 MI   543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 1 Detroit Zone 6 MI   543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 2 Detroit Zone 6 MI   543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 3 Detroit Zone 6 MI   543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 4 Detroit Zone 6 MI   543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 5 Detroit Zone 6 MI   543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 6 Detroit Zone 6 MI   543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 7 Detroit Zone 6 MI   543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 8 Detroit Zone 6 MI   543C ONVOY, LLCV - MI 340   2016-02-25   
313-251 9 Detroit Zone 6 MI   543C ONVOY, LLCV - MI 340   2016-02-25   

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

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