Local Calling Guide

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NPA: 313 [Rate centres in NPA 313] [Dial plan for NPA 313]

NXX: 344

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-344 A Detroit Zone 2 MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-344 2 Detroit Zone 2 MI SFLDMIMKDS2  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2024-11-20   
313-344 3 Detroit Zone 2 MI   6120 LEVEL 3 COMMUNICATIONS, LLC - MI 340      
313-344 4 Detroit Zone 2 MI FLNTMICD0MD  829J PAETEC ITEL, LLC 340   2006-05-05   
313-344 5 Detroit Zone 2 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2007-05-18   
313-344 6 Detroit Zone 2 MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2007-05-18   
313-344 7 Detroit Zone 2 MI SFLDMIQJDS1  7279 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI 340   2006-07-06   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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