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.

Switch: GLCOMNXGAMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
320-462 A Glencoe MN 732J NUSO, LLC 628      
320-462 1 Glencoe MN 732J NUSO, LLC 628   2023-01-07   
612-556 0 Twin Cities MN 732J NUSO, LLC 628   2024-12-23   
612-556 1 Twin Cities MN 732J NUSO, LLC 628   2024-12-23   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.