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: 612 [Rate centres in NPA 612] [Dial plan for NPA 612]

NXX: 502

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
612-502 A Twin Cities MN MPLSMNCDDSC  184D ONVOY, LLC - MN 628      
612-502 0 Twin Cities MN   184D ONVOY, LLC - MN 628   2012-04-18   
612-502 1 Twin Cities MN   184D ONVOY, LLC - MN 628   2012-04-18   
612-502 2 Twin Cities MN   184D ONVOY, LLC - MN 628   2012-04-18   
612-502 3 Twin Cities MN   184D ONVOY, LLC - MN 628   2012-04-18   
612-502 4 Twin Cities MN   184D ONVOY, LLC - MN 628   2012-04-18   
612-502 5 Twin Cities MN   184D ONVOY, LLC - MN 628   2012-04-18   
612-502 6 Twin Cities MN   184D ONVOY, LLC - MN 628   2012-04-18   
612-502 7 Twin Cities MN   184D ONVOY, LLC - MN 628   2012-04-18   
612-502 8 Twin Cities MN   184D ONVOY, LLC - MN 628   2012-04-18   
612-502 9 Twin Cities MN   184D ONVOY, LLC - MN 628   2012-04-18   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.