Credit Card Verification Numbers for Law Enforcement

MasterCard Worldwide  Law_Enforcement_support@mastercard.com

Visa - 24/7  Assisting officers and agents with general fraud questions, BIN lookups, help with contacting an issuing bank security/fraud department, and general information regarding the service of subpoenas.

• Law Enforcement

  1-800-367-8472

• Customer Assistance

  1-800-847-2911

American Express
1-866-375-3684
Merchant Verification (Groups)
1-800-876-9786

Discover
EnterpriseInvestigations@Discover.com
1-800-347-4021 Option #2 (regular business hours)
1-888-347-9898 (after hours)