IPv4 Address Regex

Example:

^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$

Matches:
✓ 192.168.1.1
✓ 10.0.0.1
⚠ 999.999.999.999 (invalid but matches)

Basic IPv4 validation: ^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$. Note: This allows invalid IPs like 999.999.999.999. For strict validation, use a more complex regex or code.

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FAQs

Does this validate IP ranges (0-255)?

No, this is a simple pattern. For strict 0-255 validation per octet, use a more complex regex or code validation.