Cardsmen SSN Specification:

What is SSN？

The Social Security Number (SSN) is a nine-digit number issued to U.S. citizens by the Social Security Administration, an independent agency of the United States government, permanent residents, and temporary residents.

When issued, the SSN generates a number with nine-digit that could not have an area number between 734 and 749, or above 772, the highest area number the Social Security Administration

[Numbers].

SSNs are the last group of numbers for each area code. Some special numbers are never assigned, such as numbers with all zeros in any number group (000-##-####, ###-00-####, ###-##-0000) and numbers with 666 or 900-999 in the first number group.