IP Address Validator
Test whether a string is a valid IPv4 or IPv6 address and see how it's classified — public, private, loopback or link-local. The parsing happens entirely in your browser.
- 100% free
- Private & safe
- Runs in your browser
Why use IP Address Validator?
IP Address Validator is a quick, no-nonsense developer utility that runs entirely client-side, so your code and data never leave your machine.
- Runs instantly in your browser — nothing to install, nothing uploaded.
- Completely free, with no account, no watermarks and no usage limits.
- IPv4 dotted-decimal and IPv6 (including ::) formats
- Paste an IPv4 or IPv6 address.
- Works on any device — desktop, tablet and phone — and is fully keyboard accessible.
How to use IP Address Validator
- Paste an IPv4 or IPv6 address.
- The tool validates its format.
- See the IP version and its type (public, private, loopback, etc.).
- Use it to check configuration and logs.
Examples
- Validating 192.168.1.1 as a private IPv4.
- Checking 2001:db8::1 is a valid IPv6.
Supported formats & limits
- IPv4 dotted-decimal and IPv6 (including ::) formats
Limitations
- Validates format and common ranges, not whether the address is reachable.
- Does not resolve hostnames.
Frequently asked questions
Does it support IPv6?
Yes — including compressed :: notation.
What types does it detect?
Public, private, loopback and link-local (and unique-local for IPv6).
Is anything uploaded?
No — validation is local to your browser.
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