SSN regex

SSN regex

This number has the following rules:

• consists of 9 digits and usually divided by 3 parts by hyphen (XXX-XX-XXXX).
• The first part can not be 000, 666, or between 900-900.
• Second part can not be 00
• Third part can not be 0000

Below is a simple SSN regular expression that is divided by hyphens.

• If you want to make hyphens optional, put ? after each dash
• If you want to validate SSN without hyphens - just remove them

/^(?!666|000|9\d{2})\d{3}-(?!00)\d{2}-(?!0{4})\d{4}$/

Example code in Javascript:

var ssnRegex = /^(?!666|000|9\d{2})\d{3}-(?!00)\d{2}-(?!0{4})\d{4}$/;
// Validate SSN
ssnRegex.test('000-22-3333'); // Returns false
ssnRegex.test('100-22-3333'); // Returns true

// Extract SSN from a string
var ssnRegexG = /(?!666|000|9\d{2})\d{3}-(?!00)\d{2}-(?!0{4})\d{4}/g;
'My SSN is 100-22-3333'.match(ssnRegexG); // returns ['100-22-3333']

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