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My IP Address
IP LOOKUP

Look up any IP, domain or URL

Where it sits, who runs it, and whether it is hiding behind something. Domains are resolved over DNS — we never load the page itself.

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Enter an address above, or start with one of these.

What you can look up#

  • An IP address, IPv4 or IPv6. You get the network, the holder, an estimated location and risk flags.
  • A domain or a URL. The name is resolved over DNS and the first address is looked up. We never load the page itself.
  • A list. The Bulk tab takes up to 100 addresses, pulls them out of whatever you paste, and exports the result as CSV or JSON.
  • Two addresses side by side. The Compare tab marks every difference.

How to read a result#

Not every field is equally reliable. The scope, ASN and route are facts read from the address and from routing data. The holder is what the registry says. The reverse DNS name is whatever the owner published. The location is an estimate with a radius, so check the radius before you trust the city. VPN, proxy and Tor flags are informative when they hit and prove nothing when they miss. The complete guide to IP addresses goes through each field.

If the location looks wrong, that is usually the address and not the tool: see why IP geolocation is often wrong. If you are not sure what an ASN is, read what an ASN is.

Addresses worth looking at first#

Public DNS resolvers are stable, well documented and anycast, which makes them good practice for reading a report. Each has its own page:

The same lookup from code#

Everything on this page is available from the API as JSON, with examples in cURL, JavaScript, Python and PHP.