Local Calling Guide
Local prefixes
Outbound calling from Helena, OK NPA;NXX;Rate Centre;Region;Plan Type;Call Type;Monthly Limit;Note;Effective 580;779;Helena;OK;;;;; 580;852;Helena;OK;;;;;
Last updated: Sat, 05 Apr 2025 03:03:23 UTC
Outbound calling from Helena, OK NPA;NXX;Rate Centre;Region;Plan Type;Call Type;Monthly Limit;Note;Effective 580;779;Helena;OK;;;;; 580;852;Helena;OK;;;;;
Last updated: Sat, 05 Apr 2025 03:03:23 UTC