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: 447

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-447 A Detroit Zone 2 MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340      
313-447 0 Detroit Zone 2 MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-06-02   
313-447 1 Detroit Zone 2 MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-06-02   
313-447 2 Detroit Zone 2 MI   543C ONVOY, LLCV - MI 340   2005-06-02   
313-447 3 Detroit Zone 2 MI   543C ONVOY, LLCV - MI 340   2005-06-02   
313-447 4 Detroit Zone 2 MI   543C ONVOY, LLCV - MI 340   2005-06-02   
313-447 5 Detroit Zone 2 MI   318J COMCAST IP PHONE, LLC 340   2007-04-01   
313-447 6 Detroit Zone 2 MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2005-06-01   
313-447 7 Detroit Zone 2 MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2005-06-01   
313-447 8 Detroit Zone 2 MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2014-10-06   
313-447 9 Detroit Zone 2 MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2014-09-27   

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

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