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: 877

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-877 A Detroit Zone 1 MI DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 0 Detroit Zone 1 MI DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 1 Detroit Zone 1 MI DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-877 2 Detroit Zone 1 MI DTRTMIBHDS1  9323 MICHIGAN BELL TEL CO 340      
313-877 3 Detroit Zone 1 MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2014-12-03   
313-877 4 Detroit Zone 1 MI DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 5 Detroit Zone 1 MI DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 6 Detroit Zone 1 MI DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 7 Detroit Zone 1 MI DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 8 Detroit Zone 1 MI DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      
313-877 9 Detroit Zone 1 MI DTRTMIRVDS0  9323 MICHIGAN BELL TEL CO 340      

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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