Local Calling Guide

Local prefixes

Calling plan types

Reverse direction

Inbound calling to Harmon, OK
NPA;NXX;Rate Centre;Region;Plan Type;Call Type;Monthly Limit;Note;Effective
580;939;Harmon;OK;;;;;
580;698;Fargo;OK;;;;;

Last updated: Sat, 01 Aug 2026 03:19:33 UTC