They are the Social Security number files. Internally (within the SSA), it is called the Numident file. This is a file of every Social Security number that has ever been issued and some ...

If you're having trouble reaching the SSA through the national number, you can use its office locator to find a local office. For more, see how to apply for Social Security benefits for eligible ...

This time, though, the Social Security number belonged to someone else, and his green card number was that of yet another person. Suspicious, the employer contacted immigration authorities ...