Validate and classify an IPv4 or IPv6 address (with optional CIDR) online — public, private or loopback.
Validate an IPv4 or IPv6 address, with optional /CIDR suffix, and classify it as public, private or loopback. Useful for sanity-checking config, allowlists and logs.
Ranges reserved for internal networks (10.0.0.0/8, 172.16–31, 192.168, plus link-local and IPv6 fc/fd/fe80) that are not routable on the public internet.
Yes — append /24 or similar and the prefix length is reported alongside the address.