Online IP Address Validator
Verify the validity of an IP address (IPv4 or IPv6). Free online tool for developers and network administrators.
Online IP Address Validator
Check whether a string represents a valid IPv4 or IPv6 address.
About this validator
This tool checks IPv4 and IPv6 syntax, helping with tests, forms, and network configurations.
It does not verify connectivity, geolocation, reputation, or whether the address is actually in use.
Best practices
- Use this validation to reject malformed input early in the UI.
- Consider accepting abbreviated IPv6 representations when appropriate.
- For real reachability checks, pair this with ping, DNS, or backend networking tools.
Important notice
This tool validates only IP format. It does not confirm that the address is active, reachable, or assigned.