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
313-344 3 Detroit Zone 2 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-346 A Detroit Zone 3 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-346 5 Detroit Zone 3 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2004-11-22   
313-346 8 Detroit Zone 3 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-380 5 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2021-03-13   
313-398 2 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2015-12-17   
313-406 7 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-09-22   
313-406 8 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-09-22   
313-426 7 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2017-03-18   
313-426 9 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2017-07-08   
313-429 0 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-07-03   
313-429 1 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-07-03   
313-432 A Detroit Zone 2 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-432 0 Detroit Zone 2 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-432 1 Detroit Zone 2 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-432 2 Detroit Zone 2 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-432 5 Detroit Zone 2 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-432 6 Detroit Zone 2 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-432 7 Detroit Zone 2 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-432 9 Detroit Zone 2 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-437 4 Detroit Zone 4 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2011-04-23   
313-437 8 Detroit Zone 4 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2010-12-10   
313-437 9 Detroit Zone 4 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2010-12-10   
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   
313-449 8 Detroit Zone 2 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2004-11-22   
313-455 3 Detroit Zone 3 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2011-08-19   
313-456 9 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2011-09-16   
313-464 5 Detroit Zone 6 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2020-04-18   
313-483 A Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-483 0 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-483 1 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-483 3 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-483 4 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-483 7 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-06-11   
313-483 8 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-06-11   
313-483 9 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-484 A Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-484 5 Detroit Zone 1 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2019-07-22   
313-486 A Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-486 0 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-03-12   
313-486 1 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-01-05   
313-486 2 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2005-02-24   
313-486 3 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-01-05   
313-486 4 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-486 5 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2004-11-06   
313-486 9 Detroit Zone 5 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2006-01-05   
313-499 0 Detroit Zone 2 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2010-12-10   
313-499 9 Detroit Zone 2 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340   2010-12-10   
313-512 A Detroit Zone 4 MI 6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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