Contact Us

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Use the dropdown menu below to find the contact information that's most relevant to you.

Contact Information for Acquirers

By Phone

Online

Interested in Partnering with Us?

Email us at map@discover.com.

Suspect Fraud?

Call 1-866-255-6019 and press "1" for authorization, address verification, or to report suspicious activity.

Other Inquiries?

Call 1-866-255-6019 and press "2."

Interchange, Rates and Fees

Find the latest Discover® Global Network interchange and cash reimbursement rates and fees for your region.

Access rates and fees

Fraud Prevention

Technical Assistance

For help with your Fraud & Risk Center Log In ID and/or Password:

Note: When emailing us, please do not share personal, sensitive or confidential information.

* In observance of the following holidays, our Servicing Center will be closed: New Year's Day; Martin Luther King Day, Memorial Day; Fourth of July; Labor Day; Thanksgiving; Christmas.

Account Incident Manager (AIM) Application

To get access to Account Incident Manager for Discover Global Network or Diners Club International, please email a completed application to DNFraud@discover.com or DCIFraud@dinersclub.com.

Download Application

If you have additional questions about fraud prevention, please contact your Discover Network Relationship Manager to help direct you to the appropriate resource for assistance.

Data Compromise Notification

Call Discover Global Network Security at 1-800-347-3083 to report a data security breach, within 48 hours of incident.

Account Management

Access Your Account

Log in

Not registered? Please call 1-866-255-6019 or email map@discover.com.

Global Compliance

Please contact us at dfsactivity@discover.com if you detect or witness suspicious activity on or involving Discover ® Global Network cards, products, and/or transactions or if you become aware of such activity and have questions.

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Contact Information for Acquirer Processors

By Phone

Online

Interested in Partnering with Us?

Email us at map@discover.com.

Suspect Fraud?

Call 1-866-255-6019 and press "1" for authorization, address verification, or to report suspicious activity.

Other Inquiries?

Call 1-866-255-6019 and press "2."

Interchange, Rates and Fees

Find the latest Discover® Global Network interchange and cash reimbursement rates and fees for your region.

Access rates and fees

Fraud Prevention

Technical Assistance

For help with your Fraud & Risk Center Log In ID and/or Password:

Note: When emailing us, please do not share personal, sensitive or confidential information.

* In observance of the following holidays, our Servicing Center will be closed: New Year's Day; Martin Luther King Day, Memorial Day; Fourth of July; Labor Day; Thanksgiving; Christmas.

Account Incident Manager (AIM) Application

To get access to Account Incident Manager for Discover Global Network or Diners Club International®, please email a completed application to DNFraud@discover.com or DCIFraud@dinersclub.com.

Download Application

If you have additional questions about fraud prevention, please contact your Discover Network Relationship Manager to help direct you to the appropriate resource for assistance.

Data Compromise Notification

Call Discover Global Network Security at 1-800-347-3083 to report a data security breach, within 48 hours of incident.

Account Management

Access Your Account

Log in

Not registered? Please call 1-866-255-6019 or email map@discover.com.

Global Compliance

Please contact us at dfsactivity@discover.com if you detect or witness suspicious activity on or involving Discover® Global Network cards, products, and/or transactions or if you become aware of such activity and have questions.

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Contact Information for Business Owners

By Phone

Online

Suspect Fraud?

Please call 1-800-347-1111 and ask for a Code 10 authorization if you suspect a transaction is fraudulent or are suspicious of the customer. Available 24/7

Fraud Prevention
Discover® Global Network Acquired Merchants

Technical Assistance

For help with your Fraud & Risk Center Log In ID and/or Password:

Note: When emailing us, please do not share personal, sensitive or confidential information.

* In observance of the following holidays, our Servicing Center will be closed: New Year's Day, Martin Luther King Day, Memorial Day, Fourth of July, Labor Day, Thanksgiving, Christmas.

Verify+ Standard or Fraud Alerts Standard Application

Download Application

ProtectBuy

To request more information email protectbuy@discover.com

Third-Party Acquired Merchants

Please contact your acquirer directly for assistance on fraud prevention solutions. Click here for a list of acquirers

Data Security

Data Compromise

Call Discover® Global Network Security at 1-800-347-3083 to report a data security breach, within 48 hours of incident.

PCI Compliance

If you have questions on security or PCI compliance, please email AskDataSecurity@discover.com

Account Management

Discover® eCentral Merchants

Access the online reporting portal that provides you with the ability to easily and efficiently manage your card processing online.

Log in

Order Free Signage

Order complimentary signage and much more.

Order Online

Surcharge Notification

Merchants who intend to add a surcharge to Discover transactions must provide notice directly to Discover and the merchant's acquirer 30 days before beginning the surcharge.

Submit your notification

Accept Discover Global Network

Check Your POS Terminal

Chances are, your in-store terminal is ready to accept cards on our network. Check it for yourself in minutes.

Test Your Terminal

Contact a Bank or Processor

To start accepting in store or online, contact your payment processor or find one from our list.

Find an Acquirer

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Contact Information for Fraud Service Providers

By Phone

Online

Technical Assistance

For help with your Fraud & Risk Center Log In ID and/or Password:

Note: When emailing us, please do not share personal, sensitive or confidential information.

* In observance of the following holidays, our Servicing Center will be closed: New Year's Day, Martin Luther King Day, Memorial Day, Fourth of July, Labor Day, Thanksgiving, Christmas.

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Contact Information for Issuers

By Phone

Online

General Questions

Credit Issuers: 1-800-347-9560

Debit Issuers: Call 1-877-433-3248

Prepaid Issuers: 1-866-402-1042

Fraud Prevention

Speak to a Specialist

Please call 1-800-347-6634 to speak to a Discover® Global Network fraud prevention specialist.

Technical Assistance

For help with your Fraud & Risk Center Log In ID and/or Password:

Note: When emailing us, please do not share personal, sensitive or confidential information.

* In observance of the following holidays, our Servicing Center will be closed: New Year's Day, Martin Luther King Day, Memorial Day, Fourth of July, Labor Day, Thanksgiving, Christmas.

Discover® Guardian

To report an issue with Discover Guardian, please call 1-800-473-5570. Select "Discover® Network", then "All other issues" from the automated menu. Available 24/7

Account Incident Manager (AIM) Application

To get access to Account Incident Manager for Discover Global Network or Diners Club International®, please email a completed application to DNFraud@discover.com or DCIFraud@dinersclub.com.

Download Application

ProtectBuy

To request more information email protectbuy@discover.com

Account Management

Access Your Account

Log in

Not registered? Please contact your relationship manager.

Access Your Disputes

Log in

Global Compliance

Please contact us at dfsactivity@discover.com if you detect or witness suspicious activity on or involving Discover® Global Network cards, products, and/or transactions or if you become aware of such activity and have questions.

Merchant Referral Form

Fill out a merchant referral to report issues around acceptance or cardholder experience.

Get Started >

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Contact Information for Integrated Payment Providers

By Phone

Online

General Questions

Interested in partnership or have feedback you would like to share? Please call 1-800-951-0633.

Fraud Prevention

ProtectBuy

To request more information email protectbuy@discover.com

Integrated Partner Support

If you have questions about the new Discover® Global Network IIN (BIN) Ranges and the POS application and PC software updates required to ensure that all Discover Network Cards can be accepted at your POS, please direct your questions to IntegratedPayments@Discover.com.

Account Management

Access Your Account

Log in

Not registered? Join

PCI Compliance

If you have a specific question about the Discover Information Security & Compliance program or our compliance validation and reporting recommendations, please direct your questions to askdatasecurity@discover.com.

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Contact Information for Prepaid Program Managers

By Phone

Online

General Questions

Interested in partnership or have feedback you would like to share? Please call 1-866-402-1042.

Or, email prepaidissuer@discover.com.

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Contact Information for Transaction Processors

By Phone

Online

Servicing

Voice Authorizations: 1‑800‑374‑1111

Address Verifications: 1‑800‑347‑1111

Merchant Services: 1‑800‑347‑0240

Client Support

Our Operations Center supports processing relationships, balancing concerns and rejected or missing monetary files.

Hours of Operation

Mon–Fri 8:00 am to 5:00 pm, Eastern Time, excluding holidays*

Third-Party Processors

Please call 1-513-900-3049

Address for Client Support

Discover® Global Network
P.O. Box 498181
Cincinnati, OH 45249-8181

* In observance of the following holidays, our Servicing Center will be closed: New Year's Day, Martin Luther King Day, Memorial Day, Fourth of July, Labor Day, Thanksgiving, Christmas.

Communication Issuers for Network Connectivity

Discover Financial Services Network Command Center

1-800-473-5570

Hours of Operation

7 days per week, 24 hours a day

Second Escalation

Manager on duty.

Data Compromise

Call Discover® Global Network Security at 1-800-347-3083 if you experience a breach in your system, within 48 hours of incident.

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.

Please contact your Discover Global Network Account Executive directly at the address below.

Discover Global Network
Client Support Account Executive
P.O. Box 3015
New Albany, OH 43054

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