Social Security Online [5] — Currently, our telephone agents can verify up to five employee SSNs for employers. Beginning fall 2009, Social Security will no longer provide this service. You must use TNEV or SSNVS to verify SSNs. Employees who verify SSNs for their employers must be registered SSNVS users in order to access TNEV and/or SSNVS. If you are not a registered SSNVS user, don’t delay – Register today for SSNVS.