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: 365

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-365 A Detroit Zone 3 MI DTRTMIPEDS0  9323 MICHIGAN BELL TEL CO 340      
313-365 0 Detroit Zone 3 MI   991E BANDWIDTH.COM CLEC, LLC - MI 340   2012-08-31   
313-365 1 Detroit Zone 3 MI   9323 MICHIGAN BELL TEL CO 340      
313-365 2 Detroit Zone 3 MI   9323 MICHIGAN BELL TEL CO 340      
313-365 3 Detroit Zone 3 MI   9714 GRID 4 COMMUNICATIONS, INC. - MI 340   2006-09-21   
313-365 5 Detroit Zone 3 MI   9323 MICHIGAN BELL TEL CO 340      
313-365 6 Detroit Zone 3 MI   9323 MICHIGAN BELL TEL CO 340      
313-365 7 Detroit Zone 3 MI   516C AT&T CORP. 340   2014-10-29   
313-365 8 Detroit Zone 3 MI   9323 MICHIGAN BELL TEL CO 340      
313-365 9 Detroit Zone 3 MI   9323 MICHIGAN BELL TEL CO 340      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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