Invalid Social Security Numbers

Which Social Security numbers are invalid?  According to the SSA an invalid or impossible SSN is one that it never assigned. The SSN has never assigned any SSNs with the following first three digits:

  • 000
  • 666
  • 900-999

Additionally, prior to June 25, 2011, the SSA has never assigned an SSN with the following first three digits:

  • 000
  • 666
  • 772-999

The SSA has also never assigned an SSN with the second two digits of 00 or the last four digits of 0000.

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About ABCs of Immigration Law
The global economy has become increasingly transactional and transcontinental. Since 9/11, there have been many amendments to immigration laws in the United States that have largely affected both individuals and businesses. Cozen O'Connor's immigration law blog, ABC's of Immigration Law, focuses on the interests and the challenges faced by those individuals and business impacted by immigration laws.
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