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Social Security Numbers

B

beach2nd

Senior member
I was having an arguement with someone that you can figure out someone's ssn if you know the last 4 digits. I know there is a way to do this as I had to write a program for it in college, but I am drawing a complete blank. He insisits there isn't a way. I tried google and can't find anywhere where this is explained clearly. Does anyone have a link or know the formula?
 
Sure it's easy. Just generate every combination of numbers between 000-00 and 999-99. Then brute force a location that requests authorization via complete SSN.
 
You'd need more info than just the last four digits. Certain digits in the SSN correspond to the state of birth, but I'm not sure which ones. There may be digits that correspond to the month of birth too.
 
DL #s mean something and can be extrapolated. SSNs are simply an ID number.

Edit, just ignore me I am wrong on half of this post. 🙂
 
I dunno if this will shed any light on your ssn mystery, but my mother took me and my brother in at the same time once, and we both ended up with sequential numbers.

I think his ends in 8, an I am 9, all the rest of the numbers are the same.

We have completely different birthdays, im June, hes November, so i dont think its related to birthdays.
 
Originally posted by: rh71
First 3 are state of birth.
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Right, but there are multiple sets for each state. I don't see how you could possibly figure this out without a lot of guessing. I don't know what the middle set means.
 
Originally posted by: Linflas
Enjoy
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Interesting. Like I thought, you'd still need more than just the last 4 digits. Anymore, you'd need the mailing address or the office location where the card was requested. Most people wouldn't know that, unless they lived somewhere their whole life. My parents have had the same mailing address my whole life (well, same physical address, the mailing address changed slightly), but even then my folks could have gone into an office to get my card, so I wouldn't be able to provide the info to someone so they could decipher the number from the last four digits.

Not only that, it'd be hard to figure out the group number, since those are just issued as the office runs out of unique serial numbers for a group.
 
Originally posted by: MrBond
You'd need more info than just the last four digits. Certain digits in the SSN correspond to the state of birth, but I'm not sure which ones. There may be digits that correspond to the month of birth too.
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for numbers issued before XX date (i can't remember when they changed) the first three are based on where the person got their SS # , ie what part of the country

i don't remember the middle two origin

basically the OP is correct IF YOU HAVE MORE INFO ABOUT THE PERSON INCLUDING BIRTHPLACE and something else (the middle two numbers, maybe that is related to the date?) , but it is only for OLD SS #'s , with all the identity theft the SS Administration realized they were making thieves job easier and went to a more random algorithm

so anybody that gets a new SS # due to identity theft gets a new version number
 
Originally posted by: bwatson283
what is the group number? Hospital or area within the state?
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State. One day I was workin the chow line when I was in the navy. The guy I was working with was able to identify the birth state of every person that signed for lunch.
 
Originally posted by: nutxo
Originally posted by: bwatson283
what is the group number? Hospital or area within the state?
Click to expand...


State. One day I was workin the chow line when I was in the navy. The guy I was working with was able to identify the birth state of every person that signed for lunch.
Click to expand...

The group number is the second set of 2
 
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