Great connections lead to smiles

Service Forms

  • Grand Mound Customers

Residential Application
Internet and Video

Residential Application
Telephone

Business Application
Internet and Video

Business Application
Telephone

  • DeWitt Customers

Residential Application
Internet and Video

Residential Application
Telephone

Business Application
Internet and Video

Business Application
Telephone

  • Clinton and Rural Clinton County Customers

Wireless Internet Application

Office Location

705 Clinton Street
P.O. Box 316
Grand Mound, IA 52751

Contact Us

563-847-3000

24 hour support

General office hours

Monday – Friday
8:00 AM – 4:30 PM

Service Catalog | Terms and Conditions | Network Management Policies | IPTV Digital Channel Line-Up | Privacy Notice | Acceptable Use Policy
CPNI Forms
CPNI authorized user letter | E-mail address of record form | Opt out form
Copyright 2024 Cornerstone Group | All Rights Reserved