So, tell us everything you can find out about that person? Name? Address? Mother's maiden name? Telephone number? Birth date? Etc.Actually it is a valid SS# issued in Washington State in 1981. That's just for starters.I have no idea whose number it is and neither do you, that's the point. With only that it's just a number.Whose # is it Betty, yours or one you're 'borrowing'?Here's just a number: 537 88 6767. Go see what you can do with that alone? Right, nothing but report earnings.