IP info

Your public IPv4 and IPv6, as this server sees them.

This one talks to the server. What it sends is spelled out below.

This tool needs JavaScript

It does its work in your browser, which is exactly why it cannot fall back to the server: that would mean sending your input somewhere. With scripting off there is nothing for it to run on.

This connection: 216.73.217.169 IPv4 US
Your IPv4: not checked separately
Your IPv6: not checked separately

"This connection" is the address you reached this page on. The two rows below ask a v4-only and a v6-only hostname the same question, which is the only way to see both.

Why this one involves the server, and what it does not know

This is the one tool that has to talk to the server, because your public IP address is not something your browser knows — it is assigned by your network, and the only party who sees it is whatever you connect to. So the server reads the address your request arrived from and hands it straight back. That is the entire exchange.

Seeing both IPv4 and IPv6

If your connection has both, a single request only reveals the one your browser chose — usually IPv6. To show both, the two rows fetch from hostnames pinned to one family each: one with only an A record, one with only AAAA. Whichever your connection lacks simply times out and is reported as "no connectivity", which is itself the answer to "do I have IPv6 here?".

What is and is not stored

The ip.json responses are sent with no-store and are not logged by this tool. Your IP does of course appear in ordinary web-server logs, the same as for every site you visit — that is unavoidable and not specific to this page. Nothing here does a reverse-DNS lookup or a geolocation database hit; the country letters, when shown, are the two-letter hint the CDN already attached to the request.

A VPN or proxy changes what shows up here, because it changes who the far end is talking to — which is generally the point of running one.

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