What is the regex for ipv4 address?

/\b(?:(?:25[0-5]|2[0-4]\d|1?\d?\d)\.){3}(?:25[0-5]|2[0-4]\d|1?\d?\d)\b/g — Matches a valid IPv4 address, with each of the four octets constrained to 0–255.

Regex · IPv4 address · Free

IPv4 address regex.

Matches a valid IPv4 address, with each of the four octets constrained to 0–255. Copy the pattern below, see what it matches, then tweak it for your exact case with the free generator.

The pattern

/\b(?:(?:25[0-5]|2[0-4]\d|1?\d?\d)\.){3}(?:25[0-5]|2[0-4]\d|1?\d?\d)\b/g

✓ Matches

192.168.1.110.0.0.2558.8.8.8

✗ Doesn't match

256.1.1.1192.168.11.2.3.4.5

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Describe the match

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Other common patterns

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