A public IP lookup returns roughly this: a coarse location, the network operator, and a guess at the connection type. Values shown are illustrative.
An IP address is the return label on your internet traffic. It has to be readable for replies to find you, so everything you connect to sees it. The question is only how much that label gives away.
What an IP address is
Your internet provider assigns your connection a public IP address, and every server you reach uses it to send answers back. It is not secret, and it cannot be: routing depends on it. What matters is that it is tied to your provider's network, and that gives anyone who sees it a starting point to look things up.
Importantly, this is a different exposure from DNS. As the guide on what a DNS resolver is explains, your resolver sees the names you visit; the sites themselves see your IP. Two separate parties, two separate pieces of the picture.
What can be read from it
| Signal | Where it comes from | How reliable |
|---|---|---|
| Approx. location | GeoIP databases (commercial IP-to-place data) | Country usually right; city often wrong by tens of kilometres |
| Provider / owner | WHOIS at the regional registry, plus reverse DNS | Reliable |
| Network (ASN) | The autonomous-system number that routes the IP | Reliable; identifies the operator |
| Connection type | ASN and address-range classification | Good: residential vs mobile vs datacentre |
| Proxy / VPN / Tor | Datacentre ASNs and known-exit lists | Often detectable, never certain |
None of these is magic; they are all lookups in databases that can be stale or simply wrong, which is why IP location is so often off.
Geolocation narrows to a city or your provider's hub and stops. It does not reach a street or a household; that mapping only your ISP holds.
What it cannot reveal
An IP does not carry your name, your street address, or what you do once connected. The only party that can map your IP to you as a subscriber is your internet provider, from its own billing records, and in most places that link is handed over only under a legal request, not to any website that happens to see your address.
So when a site says it knows where you are, it knows your area, drawn from a database, with the accuracy shown above. The leap from “this IP is in this city” to “this is your house” is one a public lookup cannot make.
IPv4 vs IPv6
An IPv4 address is often shared by many subscribers behind your provider's gateway, which blurs you into a crowd. An IPv6 address can be far more specific, sometimes unique per device, so privacy extensions that rotate it matter more there.
Changing what they see
A VPN or proxy swaps the IP a site sees for the server's, moving your apparent location. But that only covers the IP; your DNS can still leak separately, which is a different exposure worth checking.
See what yours shows
The IP and fingerprint check shows the lookup result for your own address, the same fields as the dossier above, so you can see exactly how close, or how far off, it lands. It also covers browser fingerprinting, which is a separate and often stronger way to recognise you than the IP alone, and a story of its own.
Check your own address
See the real lookup for your connection, location guess, provider, network, and proxy flag.
Open the IP & fingerprint check