Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX: 366

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
586-366 A Armada MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
586-366 0 Armada MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2024-03-16   
586-366 1 Armada MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2024-03-16   
586-366 3 Armada MI   624H ONVOY SPECTRUM, LLC 340   2024-03-23   
586-366 4 Armada MI SFLDMIMKBMD  516J TON80 COMMUNICATIONS, LLC 340   2021-07-25   
586-366 6 Armada MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2021-07-19   
586-366 7 Armada MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2021-07-19   
586-366 8 Armada MI   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2024-03-16   
586-366 9 Armada MI SFLDMIMKDS2  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2023-10-28   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.