Social Security Number Verification Verify Social Security Numbers Over the Internet Overview There are two Internet verification options you can use to verify that your employee names and Social Security numbers match Social Security's records. You can: Verify up to 10 names and SSNs (per screen) online and receive immediate results. This option is ideal to verify new hires. OR Upload batch files of up to 250,000 names and SSNs and usually receive results the next government business day. This option is ideal if you want to verify an entire payroll data base or if you hire a large number...