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: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
612-312 A Twin Cities MN MPLSMNZZZMD  829J PAETEC ITEL, LLC 628      
612-312 0 Twin Cities MN   829J PAETEC ITEL, LLC 628      
612-312 1 Twin Cities MN   829J PAETEC ITEL, LLC 628      
612-312 2 Twin Cities MN   829J PAETEC ITEL, LLC 628      
612-312 3 Twin Cities MN   829J PAETEC ITEL, LLC 628      
612-312 6 Twin Cities MN   829J PAETEC ITEL, LLC 628      
612-312 7 Twin Cities MN   829J PAETEC ITEL, LLC 628      
612-312 8 Twin Cities MN   829J PAETEC ITEL, LLC 628      
612-312 9 Twin Cities MN   829J PAETEC ITEL, LLC 628      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.