How can I validate US Social Security Number?

Question

Anyone out there know how to improve this function? I\'m not worried about shortening the code, I\'m sure this could be done with better regex, I am more concerned about cor

Answer 1

As of 2011 SSN's are completely randomized (http://www.socialsecurity.gov/employer/randomization.html)

The only real rules left are:

• Cannot start with 900-999 (although the Individual Taxpayer Identification Number, which can be used like an SSN by temporary residents and undocumented/DACA/DAPA immigrants in some situations, is in the same format and does start with 9)
• Cannot start with 666
• Cannot start with 000
• Must be 9 numeric digits or 11 with the 2 dashes
• Cannot be any of the known fakes;
  • "078051120" — Woolworth Wallet Fiasco
  • "219099999" — Was used in an ad by the Social Security Administration
• Many people exclude repeating an sequential numbers as well, although these are now technically valid, and I feel sorry for the poor schmuck's who gets assigned these.