Catholic Internet Services, P.O. Box 3197,
Monument, CO 80132.
Customer
Service Phone Numbers
CIS support center is open to you 24 hours a day, 7 days a
week and FREE of charge for all CIS customers. Please call us
any time you need live assistance.
- Dial-Up Technical Support Number
1-888-461-8760
24x7 365 days a year
- Press 2 and leave your phone number for a call back.
- Billing Questions & Signup
1-719-213-1168
Monday to Friday 9-5 MST
Customer service via Email
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