SSN regex
SSN stands for social security number and is issued to US citizens, permanent and temporary residents.
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}$"
Enter a text in the input above to see the result
Example code in Python:
import re
# Validate SSN
ssn_validate_pattern = "^(?!666|000|9\\d{2})\\d{3}-(?!00)\\d{2}-(?!0{4})\\d{4}$"
re.match(ssn_validate_pattern, "000-22-3333") # None
re.match(ssn_validate_pattern, "100-22-3333") # Returns Match object
# Extract ssn from a string
extract_ssn_pattern = "(?!666|000|9\\d{2})\\d{3}-(?!00)\\d{2}-(?!0{4})\\d{4}"
re.findall(extract_ssn_pattern, 'My SSN is 100-22-3333') # returns ['100-22-3333']
