IP Address Regex Tester
Test and validate ip patterns with this specialized regex tester. Includes tested patterns and real-time matching.
Recommended Ip Pattern
``regex
^(?:(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d\d?)$
`
Test Examples
Valid matches:
- 192.168.1.1
10.0.0.255255.255.255.00.0.0.0
Invalid (should not match):
256.1.1.1192.168.1192.168.1.1.1192.168.1.999
Pattern Explanation
Matches valid IPv4 addresses (0-255 for each octet)
Alternative Patterns
1. ^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$`
How to Use
1. The pattern above is preloaded—or enter your own 2. Add test strings to validate 3. See real-time match highlights 4. Copy the pattern for your code
Regex Quick Reference
| Symbol | Meaning | Example | \dAny digit\d{3} matches "123" \wWord character\w+ matches "hello" +One or morea+ matches "aaa" *Zero or morea* matches "" or "aaa" ?Optionalcolou?r matches "color" ^Start of string^Hello $End of stringworld$ [abc]Character class[aeiou] matches vowels (ab)Alternation(catdog) matches either