There are 3 different types of Social Security Number Validations.
1) SSNVS-a service of Social Security Administration. The verification must occur after hire. CIR will verify the individual was issued the social security number. This service helps employers verify SSN on W-2 forms for wage reporting.
2) Social Security Trace-The social security number is run through a proprietary database-It confirms the validity of the number (verified as valid and date of issuance). May be conducted pre-hire.
3) Address verification-Social security number is run through proprietary databases and all names and addresses associated with the SSN is provided. May be conducted pre-hire