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A valid Social Security Number cannot: This method is about as straight-forward as possible and surprisingly it will actually validate every single possible Social Security Number out there, but the problem is that many of the values that it would accept aren't even valid values.
Let's look at a simple break-down of this expression: ^ # Beginning of expression \d # Exactly three digits (denoted by \d and the specifies the number) - # An explicit 'dash' \d # Exactly two digits - # Another explicit 'dash' \d # Exactly four digits $ # End of expression This doesn't take into consideration any of the previously suggested rules and exceptions that were mentioned above, but it does function to ensure that the number is in the proper format.
Verifying Your Own Social Security Number Enrolling in and Using the E-Verify Online System for Employee Eligibility Verifying Employees’ Social Security Numbers for Withholding and Payroll Using Other, Non-Governmental Sources to Verify SSN Show 1 more... Article Summary Ask a Question Related Articles References This article was co-authored by Clinton M. He received his JD from the University of Wisconsin-Madison in 1998 and his Ph D in American History from the University of Oregon in 2013.
Sandvick worked as a civil litigator in California for over 7 years.
The number is issued to an individual by the Social Security Administration and primary purpose is to track individuals for the U. 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 Itself The number itself can be broken into three major components and appears in the following format (with or without dashes): You may notice a great deal of past-tense within the previous descriptions.
The United States is not the only country to use Social Security Numbers, but for demonstration purposes we will focus on validating U. This is because on June 25th, 2011, the Social Security Administration revised their assignment process to use a system of randomization that had the following changes: Validating the Number The previously mentioned "randomization act" made it significantly easier to use a mechanism such as a Regular Expression to handle validating Social Security Numbers.
666|000|9\d)\d # Don't allow the SSN to begin with 666, 000 or anything between 900-999 - # Explicit dash (separating Area and Group numbers) (?!
The Social Security prefix listed below indicate which state the Social Security card was issued in.
This can assist you in identifying which state the person lived in or what state they were born in based on their SSN.
You can see an example of this in action below: While this may not look very fun at all, it will validate any valid Social Security Number as per the constraints (and exceptions) listed by the Social Security Administration.
Let’s break this one down to see what is going on: ^ # Start of expression (?!