SSN Validator
What this validator checks
A US Social Security Number is nine digits shown grouped as AAA-GG-SSSS: a 3-digit area, a 2-digit group, and a 4-digit serial. This tool confirms the shape and then applies the Social Security Administration's never-issued rules — area 000, 666, or 900–999; group 00; and serial 0000 are all impossible — so it can tell a well-formed number from one that could never exist.
Format only — not a real person
SSNs have been randomized since June 2011, so there is no check digit or issuance pattern left to verify against. This validator checks the format and never-issued rules only — it does not look up, identify, or confirm that a number belongs to any real person, and nothing is sent to a server. A passing number is well-formed, not proof of a real, issued SSN. Some numbers used in advertising, such as 078-05-1120 and the 987-65-432x block, are structurally valid but reserved and never assigned.
Related tools
Need a fictional SSN to test with instead of checking one? Try the SSN generator to generate a sample, then paste it here to see how the rules apply.