IP Address Validator
Network & Ops · Free Online Tool
Validate IPv4/IPv6 format and legality.
Implementation note：IPv6 validation is simplified. The check catches common mistakes but does not implement the full RFC 4291 grammar — unusual but legal forms may be reported as invalid. Do not rely on it as a security control.
Version
IPv4
Type
Private (RFC 1918)
Scope
Private
Detection runs entirely in your browser. IPv6 scope detection covers loopback, link-local, unique-local, and multicast prefixes.
Dual-Stack
Validates both IPv4 and IPv6 addresses with one input.
Type Detection
Identifies private, loopback, link-local, multicast, and broadcast addresses.
Live Feedback
Validation updates instantly as you type.
How to Use IP Address Validator
- 1Enter the URL, IP address, or network parameter to look up.
- 2Click the lookup or test button.
- 3Review the detailed results in the output panel.
- 4Use the information for your network operations.
Features
- ✓100% free — no signup, no subscription, no ads
- ✓Runs entirely in your browser — data never leaves your device
- ✓Fast and lightweight — instant results
- ✓Cross-platform — works on desktop, tablet, and mobile
Frequently Asked Questions
Are network lookups real-time?
Yes, IP lookups, DNS queries, and HTTP tests perform live network requests to provide current data.
Is my IP address logged?
The IP Lookup tool queries public geolocation APIs. We do not store your IP address or lookup history.
Why do geolocation results differ between providers?
Each provider maintains its own IP-to-location database with different update cycles and coverage. Treat any single result as an approximation, not an exact address.
Do the results reflect me if I use a proxy or VPN?
No. Results show the egress IP of the proxy or VPN you are connected through. Disconnect it if you need your real public IP.
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