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: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
586-400 A Romeo MI SFLDMIMK8MD  965H FRACTEL, LLC 340      
586-400 0 Romeo MI SFLDMIMK8MD  965H FRACTEL, LLC 340   2020-02-15   
586-400 1 Romeo MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2020-06-14   
586-400 2 Romeo MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2020-06-14   
586-400 3 Romeo MI SFLDMIMKDS2  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2020-12-18   
586-400 4 Romeo MI SFLDMIMK8MD  965H FRACTEL, LLC 340   2020-02-15   
586-400 5 Romeo MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2021-01-30   
586-400 6 Romeo MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2021-01-30   
586-400 7 Romeo MI SFLDMIMK8MD  965H FRACTEL, LLC 340   2020-02-15   
586-400 8 Romeo MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2021-01-30   
586-400 9 Romeo MI DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2021-01-19   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.