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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-556 A Detroit Zone 1 MI DTRTMIMDDS0  9323 AMERITECH MICHIGAN 340      
313-556 0 Detroit Zone 1 MI   9323 AMERITECH MICHIGAN 340      
313-556 1 Detroit Zone 1 MI   4125 XO COMMUNICATIONS SERVICES, INC. - MI 340   2008-09-21   
313-556 2 Detroit Zone 1 MI   4125 XO COMMUNICATIONS SERVICES, INC. - MI 340   2008-09-21   
313-556 3 Detroit Zone 1 MI   5562 METRO PCS, INC. 340   2009-03-09   
313-556 4 Detroit Zone 1 MI   5562 METRO PCS, INC. 340   2009-03-09   
313-556 5 Detroit Zone 1 MI   1200 TALK AMERICA INC. - MI 340   2008-03-01   
313-556 6 Detroit Zone 1 MI   5562 METRO PCS, INC. 340   2009-03-09   
313-556 7 Detroit Zone 1 MI   9323 AMERITECH MICHIGAN 340      
313-556 8 Detroit Zone 1 MI   9323 AMERITECH MICHIGAN 340      
313-556 9 Detroit Zone 1 MI   9323 AMERITECH MICHIGAN 340      

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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