Enter an IPv4 or IPv6 address and the tool reports its version, class, whether it is private or public, and its decimal, hexadecimal and binary representations.
10.0.0.0/8, 172.16.0.0/12 and 192.168.0.0/16 are reserved for private networks and are never routed on the public internet.
They are the legacy class-based ranges defined by the first octet, once used to size networks before CIDR replaced them.
No — everything runs locally in your browser. It analyzes the address structure only and makes no network lookups.