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On Wed, Jul 2, 2014 at 12:13 PM, Englander, Douglas
<Douglas_Englander@xxxxxxxxxxxxx> wrote:
Does anyone know what the rules are for validation of US Social
Security number/TaxID#? Is there a webservice available? Is there
one place (internet link) where I can go to that would like the "rules"
that a number must pass in order to be a validly formed SS# (not
necessarily active/assigned to someone, just correct formation of
numbers)?
Well, there's clearly one site, and it's definitely official. I would
say that everything you need to know is even on one page:
http://www.ssa.gov/employer/randomizationfaqs.html
But you have to look at two questions to get what you need:
http://www.ssa.gov/employer/randomizationfaqs.html#a0=5
http://www.ssa.gov/employer/randomizationfaqs.html#a0=6
tl;dr: Any first three digits are valid except 000, 666, and anything
in the range 900-999. Any remaining digits are valid except all
zeros.
It wasn't always like this, of course. For further information, you
can look at other pages on the official site, such as
http://www.ssa.gov/employer/ssnweb.htm
http://www.ssa.gov/employer/stateweb.htm
http://www.ssa.gov/employer/ssnvhighgroup.htm
http://www.ssa.gov/employer/randomization.html
John Y.
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