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: 250

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
586-250 A Warren MI SFLDMITODS2  543C ONVOY, LLCV - MI 340      
586-250 0 Warren MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-05-13   
586-250 1 Warren MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2016-05-13   
586-250 2 Warren MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2016-07-22   
586-250 3 Warren MI SFLDMIMNXRX  991E BANDWIDTH.COM CLEC, LLC - MI 340   2017-07-31   
586-250 4 Warren MI SFLDMIMKDS2  933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 340   2018-10-30   
586-250 5 Warren MI SFLDMITODS2  543C ONVOY, LLCV - MI 340   2018-08-31   
586-250 6 Warren MI DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2019-07-19   
586-250 7 Warren MI DTRTMIAPG00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 340   2019-08-15   
586-250 8 Warren MI DTRTMIDJCMD  6003 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MI 340   2017-07-06   
586-250 9 Warren MI   279B CLEAR RATE COMMUNICATIONS, INC. - MI 340   2018-01-07   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.