KitDev Space Hub

IP Address Lookup

Inspect public IP addresses, reverse DNS hostnames, and network classifications.

⚡ Bun · Online
The lookup runs on the server
The page starts no lookup. Press Lookup IP or My IP to start one. The server gives two attributes: the client IP address that the server sees for your connection, which My IP returns, and the reverse DNS (PTR) name. The other attributes come from the address itself: the version, the scope, the matched range with its RFC, and the decimal, hexadecimal, and binary forms.
Presets:

About IP address info

This tool shows the details of an IPv4 or IPv6 address: the class, the reverse DNS host name, and whether the address is public, private, loopback, or reserved.

A private address, such as one in 10.0.0.0/8 or 192.168.0.0/16, works inside a network only. A router cannot send it over the internet. This is a common cause of a service that works on a laptop and fails in production.

The reverse DNS name often names the hosting company or the internet provider of the address.

The result shows the special-purpose range that holds the address and the RFC that defines the range, such as 10.0.0.0/8 from RFC 1918, 100.64.0.0/10 from RFC 6598, or 169.254.0.0/16 from RFC 3927. A public address matches no such range.

The tool does not show a location. An address database gives a city at best. It does not give a building.

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