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: STPHMNXSRS4

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
218-478 A Stephen MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
218-478 0 Stephen MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
218-478 1 Stephen MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
218-478 2 Stephen MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
218-478 3 Stephen MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
218-478 5 Stephen MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
218-478 6 Stephen MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
218-478 7 Stephen MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
218-478 8 Stephen MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      
218-478 9 Stephen MN 1123 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 636      

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.