Who holds it
The company or network the address block was given to: usually an internet provider, a hosting company or a cloud.
Free tool
Free IP lookup
Who is behind an IP address, or the server a website runs on? Type an address or a domain to see the network it belongs to, who holds it, the country it is registered in and where to report abuse, straight from the internet registries. No signup.
We ask the internet registries. We keep no record of what you look up, or of your IP address.
Asking the registries…
What an IP lookup can and cannot tell you
Every address on the internet is handed out by one of five regional registries. Their records are public, and they are what this tool reads.
Country of registration
Where the block is registered. Not where the server or person is: clouds and providers use their addresses all over the world.
Abuse contact
Where the network's owner wants reports of spam or attacks from its addresses.
A website's servers
Type a domain to see which company hosts it. Most sites have more than one address.
Free DNS lookup →Is it sending spam?
Whether a mail server's address is on the public spam blocklists is a separate check.
Email blacklist checker →What it is not
Not a way to find a person. An address on mobile data or a shared office line is shared by many people.
How this tool handles your data
The lookup runs on our server. It asks rdap.org, a free public lookup service, which passes the question to the regional registry that holds the address (AFRINIC for most of Africa). A domain is first turned into addresses through Cloudflare's public DNS resolver. They receive the address or domain, never anything about you.
We keep no record of what you look up, and we do not store your IP address. We read it, and the country Cloudflare places your connection in, only to show them back to you. Our own analytics count that a lookup happened, nothing else. Full detail is in our privacy policy.
Questions about the IP lookup
Is this IP lookup free, and do I need to sign up?
It is free and there is no signup.
Does it show where the server physically is?
No, and be careful with tools that claim to. The country shown is where the block of addresses is registered with a regional internet registry, such as AFRINIC for most of Africa. A Kenyan website on a European cloud will show the cloud company's country. Exact locations come from paid guesswork databases, which we do not use.
How do you know my IP address?
Every website you visit sees the address your connection comes from; that is how the reply finds its way back to you. If you are on mobile data or a shared office line, it is often your provider's address shared by many people, not one that points to you. We show it back to you and do not store it.
Do you record what I look up, or my IP address?
No. We keep no record of the address or domain you look up and none of your own IP address. To answer, our server asks rdap.org, a free public lookup service, which passes the question to the regional registry that holds the address. A domain is first turned into addresses through Cloudflare's public DNS resolver. They receive the address or domain, never anything about you.
What is the abuse contact for?
It is the email address the network's owner gives for reports of spam, attacks or hacked machines coming from their addresses. Send it the address, the time with time zone, and what happened.
Get it fixed
Worried about who is reaching your website?
Website security is part of the Security Review. We fix problems in stages so your site never goes offline, write down what changed, and check again with you at the end.