Local Calling Guide

Local prefixes

Calling plan types

Reverse direction

Outbound calling from Derby, IA
NPA;NXX;Rate Centre;Region;Plan Type;Call Type;Monthly Limit;Note;Effective
641;533;Derby;IA;;;;;
641;400;Humeston;IA;;;;;
641;877;Humeston;IA;;;;;

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