Local Calling Guide

Area code/prefix search

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NPA: 586 [Rate centres in NPA 586] [Dial plan for NPA 586]

NXX: 278

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
586-278 A Center Line MI DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340      
586-278 0 Center Line MI DTRTMIVWDMD  624H ONVOY SPECTRUM, LLC 340   2022-05-09   
586-278 1 Center Line MI DTRTMIVWDMD  624H ONVOY SPECTRUM, LLC 340   2022-04-10   
586-278 2 Center Line MI DTRTMIVWDMD  624H ONVOY SPECTRUM, LLC 340   2021-06-13   
586-278 3 Center Line MI DTRTMIVWDMD  624H ONVOY SPECTRUM, LLC 340   2022-01-30   
586-278 4 Center Line MI DTRTMIVWDMD  624H ONVOY SPECTRUM, LLC 340   2022-01-30   
586-278 5 Center Line MI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2025-05-10   
586-278 6 Center Line MI DTRTMIVWDMD  624H ONVOY SPECTRUM, LLC 340   2021-11-18   
586-278 7 Center Line MI SFLDMIMKBMD  516J TON80 COMMUNICATIONS, LLC 340   2021-06-05   
586-278 8 Center Line MI DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2021-02-19   
586-278 9 Center Line MI DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2021-02-19   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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