IPv4 regex pattern
Copy and test a JavaScript regex for IPv4 addresses, with examples and a one-click link to the regex tester.
IPv4 regex pattern
Validate whole value
Use anchors to check whether the complete value matches.
Regex: ^(?:25[0-5]|2[0-4]\d|1?\d?\d)(?:\.(?:25[0-5]|2[0-4]\d|1?\d?\d)){3}$
Flags: -
Search in text
Find matching fragments inside a larger block of text.
Regex: \b(?:25[0-5]|2[0-4]\d|1?\d?\d)(?:\.(?:25[0-5]|2[0-4]\d|1?\d?\d)){3}\b
Flags: g
Examples that match
192.168.0.110.0.0.254
Examples that do not match
999.1.1.1192.168.1
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