The Group Number (G) - This is a two digit number that ranges from 00-99 and used a specific set of rules to build the sequence from the first value to the last within the group to avoid consecutive values being used.This could either be the specific office code that the card itself was issued from or based on the zip code that the applicant lived in. The Area Number (A) - This is a three digit number that was used to assign a Social Security number based on geographic location.These sections can be broken down as follows: The number itself can be broken into three major components and appears in the following format (with or without dashes): The United States is not the only country to use Social Security Numbers, but for demonstration purposes we will focus on validating U.S. Social Security program, which can allocate benefits and is commonly referred to as a unique identifier for individuals within the United States for a variety of federal purposes. The number is issued to an individual by the Social Security Administration and primary purpose is to track individuals for the U.S. citizens, permanent residents and temporary residents under section 205(c)(2) of the Social Security Act. I’ll provide a few different methods to handle the actual validation through Regular Expressions and let you determine which one might best suit your needs.Ī Social Security number (SSN) is a nine-digit number issued to U.S. This blog post focuses on validating the last of those: Social Security Numbers and why they may be a bit deceivingly more difficult to validate than you might expect. Regular Expressions are often used to handle all sorts of validation:
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