Contact Information for Transaction Processors
To contact us, simply dial the number below. A Discover Network representative will contact you as soon as possible.
Contact Information
Voice Authorizations: 1-800-374-1111
Address Verifications: 1-800-347-1111
Merchant Services: 1-800-347-0240
Data Compromise Notification
If you experience a breach in your system, notify Discover Network Security within 48 hours at 1-800-347-3083.
Client Support
Operations Center contacts support processing relationships balancing concerns, rejected or missing monetary files.
Hours of Operation
Mon–Fri 8:00am to 5:00pm Eastern Time
Third Party Processors
1-513-900-3049
Address for Client Support
Discover Network
P.O. Box 498181
Cincinnati, OH 45249-8181
Client Support
Account Executives
Account executives provide an escalation point for daily operational issues and responsible for business development, contracts, technical upgrades, changes to processing configuration and the processing relationship.
To contact your Discover Network Account Executive directly:
Discover Network
Client Support Account Executive
P.O. Box 3015
New Albany, OH 43054
Communication Issues for Network Connectivity
Hours of Operation
7 days per week, 24 hours a day
Discover Financial Services Network Command Center
1-800-473-5570
Second Escalation
Manager on duty.