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: 300

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
586-300 A Mount Clemens MI SFLDMIMK8MD  965H FRACTEL, LLC 340      
586-300 0 Mount Clemens MI SFLDMIMK8MD  965H FRACTEL, LLC 340   2020-02-19   
586-300 1 Mount Clemens MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2020-12-03   
586-300 2 Mount Clemens MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2020-12-03   
586-300 3 Mount Clemens MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2020-12-03   
586-300 4 Mount Clemens MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2020-12-03   
586-300 5 Mount Clemens MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2020-12-03   
586-300 6 Mount Clemens MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2020-11-12   
586-300 7 Mount Clemens MI WAYNMIMNXUX  318J COMCAST IP PHONE, LLC 340   2020-11-12   
586-300 8 Mount Clemens MI LIVNMIUX8MD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 340   2021-10-14   
586-300 9 Mount Clemens MI SFLDMIMKDS2  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2020-12-18   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.