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Social Security Number Verification Service

The U.S. Social Security Administration offers a service that enables employers to verify the social security numbers (SSN) of employees. FINRA recommends that its member firms consider using the SSN verification service in connection with the pre-registration or employment process.

The verification process differs depending on the number of names or SSNs your firm wants to check:

  • Up to 5 names/SSNs: Call (800) 772-6270.
  • Up to 50 names/SSNs: Submit a written request to a local Social Security Office.
  • Greater than 50 names/SSNs: Submit a registration package.

For more details on the SSN verification process, see the SSA Web site at