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IP lookup

Who's behind an IP address?

Enter any IP address to see which network it belongs to, where it's registered and what kind of connection it is. Handy for addresses in email headers, router logs or games.

8.8.8.8

Google's network · United States

Hosting or data center · estimate

Owner network
GoogleAS15169
Address block
8.8.8.0/24256 addresses, all run by Google
Registered in
United StatesWith ARIN since 2023. Where the block is registered, not where its user is.
Hostname
dns.googleReverse DNS for this address
Connection type
Hosting or data centerestimate
Version
IPv4

What a lookup can't tell

Who uses itOnly the provider knows which customer had an address, and it only says so to the police or a court.
Their street or cityThe registered country comes from official records. City guesses for other people's addresses are often wrong, so ip5.io doesn't make them.
Whether it's a VPN for sureThe connection type is an estimate from the network's name and hostname.
From the terminal
curl ip5.io/lookup/8.8.8.8
curl "ip5.io/lookup/8.8.8.8?format=json"

Addresses you look up aren't stored. ip5.io asks Cloudflare DNS who owns them.

5 questions

Q1Can I find out who is behind an IP address?

Not the person. A lookup shows the network that owns the address, usually an internet provider, a mobile operator or a hosting company. Only that provider knows which customer used it at a given time, and it shares that only with the police or a court.

Q2Why does it show a different country than I expected?

The country is where the address block is registered, which is usually where the provider is based. Big networks like Google or Cloudflare register addresses in one country and use them worldwide, and VPNs make an address appear far from its user.

Q3What is 192.168.1.1, and why can't it be looked up?

It's a private address. Home and office routers give these to the devices inside, and millions of networks use the same ones, so they don't lead to anyone on the internet. Your public address is the one on ip5.io's main page.

Q4What does "address block" mean?

Networks get addresses in ranges, written like 8.8.8.0/24. The number after the slash says how big the range is: /24 is 256 addresses, /19 is 8,192. Every address in the block belongs to the same network.

Q5Is it OK to look up someone's IP address?

Yes. Who owns which addresses is public information that internet registries publish for everyone. A lookup shows the network, not the person, and the address's owner isn't told that you looked.