How this site handles your address

Like every website, this server sees your IP address and the headers your browser sends. It needs them to answer you; showing them back to you is the point of the site.

The service runs without access logs. It writes no record of who visited or what they looked up, and its error messages never contain an address.

Rate limiting. To stop the lookup pages from being abused, each address is counted in memory (for IPv6, its /64 network). The count is forgotten within 10 minutes of the last lookup.

WHOIS answers. Registry records are cached in memory for 24 hours, keyed by the address or AS number that was looked up, so the registry is not asked twice.

Nothing in memory is written to disk or survives a restart.

The server's DNS resolver. To show a hostname, the server asks its DNS resolver for the reverse record of the address on the page.

A regional internet registry. A WHOIS lookup sends the address to the registry that manages it: RIPE NCC, ARIN, APNIC, LACNIC or AFRINIC. On the page for your own address this only happens when you choose "Show WHOIS".

This site, a second time. On the page for your own address, your browser also connects to ipv4.showip.sh and ipv6.showip.sh to find your other address.

No one else. Location is looked up in a database on this server. There are no analytics, ads, or third-party fonts or scripts. The map link opens OpenStreetMap only when you click it.

This site sets no cookies. If you turn the glitch effect off, that choice is kept in your browser's local storage and never sent to the server.