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: OSLOMNXORS0

NPA-NXX BLOCK Rate Centre Region OCN LATA Eff date Disc date Map
218-695 A Oslo MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636     map
701-699 A West Oslo ND 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636     map

Last updated: Wed, 30 Aug 2017 11:37:56 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.