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: 616

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
313-616 A Detroit Zone 1 MI   700J WAVENATION, LLC 340      
313-616 0 Detroit Zone 1 MI   732J NUSO, LLC 340   2025-07-21   
313-616 1 Detroit Zone 1 MI   732J NUSO, LLC 340   2025-07-21   
313-616 4 Detroit Zone 1 MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340   2025-07-18   
313-616 6 Detroit Zone 1 MI   490J BOOST SUBSCRIBERCO L.L.C. 340   2026-03-02   
313-616 7 Detroit Zone 1 MI   490J BOOST SUBSCRIBERCO L.L.C. 340   2026-04-30   
313-616 8 Detroit Zone 1 MI   490J BOOST SUBSCRIBERCO L.L.C. 340   2026-07-29   
313-616 9 Detroit Zone 1 MI   700J WAVENATION, LLC 340   2025-09-13   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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