Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
313-512 2 Detroit Zone 4 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2020-10-13   
313-512 3 Detroit Zone 4 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2020-10-13   
313-523 4 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-08-03   
313-528 0 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2011-06-19   
313-528 2 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2010-11-19   
313-528 3 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2010-11-19   
313-528 4 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2010-12-10   
313-528 5 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2010-12-10   
313-528 6 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2010-12-10   
313-559 A Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-559 8 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-586 A Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-586 0 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-586 1 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-586 3 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-586 4 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-586 5 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-586 7 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-586 8 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-586 9 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-651 1 Detroit Zone 4 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-10-05   
313-651 7 Detroit Zone 4 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-10-05   
313-662 A Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-662 0 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-662 1 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-662 2 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-662 3 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-662 6 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-662 7 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-662 9 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-681 5 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2008-05-16   
313-710 4 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2020-03-27   
313-725 7 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2018-09-17   
313-731 6 Detroit Zone 3 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2008-07-25   
313-736 5 Detroit Zone 4 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2004-11-22   
313-749 9 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2008-07-17   
313-752 3 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2017-01-14   
313-756 6 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2021-01-09   
313-758 6 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-01-06   
313-769 A Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-769 2 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2007-04-18   
313-769 3 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2004-08-27   
313-769 4 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-771 5 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2018-10-15   
313-771 7 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2018-12-08   
313-772 2 Detroit Zone 4 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2004-09-17   
313-774 8 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2019-05-24   
313-828 A Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-828 5 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-859 A Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2024-12-31   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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