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: 824

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-824 A Detroit Zone 2 MI DTRTMILXDS0  9323 MICHIGAN BELL TEL CO 340      
313-824 0 Detroit Zone 2 MI   9323 MICHIGAN BELL TEL CO 340      
313-824 1 Detroit Zone 2 MI   624H ONVOY SPECTRUM, LLC 340   2021-11-12   
313-824 2 Detroit Zone 2 MI   9323 MICHIGAN BELL TEL CO 340      
313-824 3 Detroit Zone 2 MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2019-12-30   
313-824 4 Detroit Zone 2 MI   9323 MICHIGAN BELL TEL CO 340      
313-824 5 Detroit Zone 2 MI   9323 MICHIGAN BELL TEL CO 340      
313-824 6 Detroit Zone 2 MI   9323 MICHIGAN BELL TEL CO 340      
313-824 8 Detroit Zone 2 MI   624H ONVOY SPECTRUM, LLC 340   2021-11-12   
313-824 9 Detroit Zone 2 MI   9323 MICHIGAN BELL TEL CO 340      

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

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