Individual Taxpayer Identification Number Social Security Numbers
SSNs between 900-##-#### and 999-##-#### are Individual Taxpayer Identification Number (not valid SSNs).
Use the SSN Search Tool to check individual Social Security Numbers.
About this Data
SSNs issued before June 25, 2011 are linked to where the number was issued which is often the same as where the cardholder was born. After 2011, SSN issuance was randomized. Not every SSN in the range above is necessarily valid. Learn More >
Individual Taxpayer Identification Number SSNs by Year
Within the 900-##-#### to 999-##-#### group, the 4th and 5th digits indicate when a number was issued.
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