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: 740

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-740 A Detroit Zone 5 MI DTRTMIBASMD  516C AT&T CORP. 340      
313-740 0 Detroit Zone 5 MI   5562 METROPCS, INC. 340   2006-08-05   
313-740 1 Detroit Zone 5 MI   5562 METROPCS, INC. 340   2006-08-05   
313-740 2 Detroit Zone 5 MI   5562 METROPCS, INC. 340   2006-08-05   
313-740 3 Detroit Zone 5 MI   5562 METROPCS, INC. 340   2006-08-05   
313-740 4 Detroit Zone 5 MI   5562 METROPCS, INC. 340   2006-08-05   
313-740 5 Detroit Zone 5 MI   5562 METROPCS, INC. 340   2006-08-05   
313-740 6 Detroit Zone 5 MI   5562 METROPCS, INC. 340   2006-08-05   
313-740 7 Detroit Zone 5 MI   516C AT&T CORP. 340   2006-04-15   
313-740 8 Detroit Zone 5 MI   5562 METROPCS, INC. 340   2006-08-05   
313-740 9 Detroit Zone 5 MI   5562 METROPCS, INC. 340   2006-08-05   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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