Who hosts this website?
Enter a domain to see the host or CDN behind it, who runs its DNS and email, and the proof for each answer.
What this checker finds
A website is rarely one thing. The pages might be served by a hosting company, the traffic might pass through a CDN first, the domain's DNS might live with a third company, and email might be handled by a fourth. This page looks at all of them and says which provider is behind each part, instead of making you piece it together from separate tools.
- The web side. Every address the site points to, the network that owns it, and whether it belongs to a CDN, a hosting platform, a hosting company or a cloud.
- The DNS provider. Read from the nameservers of the domain.
- The email provider. Read from the MX records.
- The abuse contact. The address to report spam, phishing or attacks to, for the network that serves the site.
How to use it
- Enter a domain or a web addressA bare domain such as
example.comworks, and so does a full address with a path. Only the host name is used. IP addresses are not accepted here: the IP lookup answers for those. - Read the verdictThe headline names the provider and says what kind it is: a CDN, a platform, a host or a cloud. A confidence label says how many independent clues agree.
- Check the evidenceOpen the evidence tab to see what each finding rests on, such as a CNAME to a provider's domain, an AS number, a published address range or a response header.
How the answer is worked out
| Clue | What it shows |
|---|---|
| CNAME chain | A name such as example.cloudfront.net or example.netlify.app points straight at a CDN or platform. |
| Published address ranges | Some CDNs publish the ranges they use. An address inside them is theirs. |
| Network owner (AS number) | The organisation that announces the address. Well-known hosts and clouds are recognised. |
| Response headers | Headers such as cf-ray, x-amz-cf-id or x-vercel-id give away a CDN or platform. They are read only when the clues above did not already settle it, with one request to the site. |
| Nameservers and MX hosts | The names of the DNS and mail servers point to those providers. |
Network owners and countries come from the free DB-IP Lite databases, credited as "IP geolocation by DB-IP". The provider patterns are a short list kept by hand, so a small host may show as an unrecognised network. In that case its organisation name is still shown, and it is usually the hosting company.
Questions people ask
How can I tell who hosts a website?
Look up the website's IP address and see which network owns it, then check whether the site sits behind a CDN. This page does both: it follows the DNS records, names the owner of each address and reads the DNS and mail providers. When a CDN is in front, the real host is not visible, and the page says so.
Why does it say Cloudflare when my host is somebody else?
Because Cloudflare is in front of your host. Visitors reach Cloudflare's servers, and Cloudflare forwards requests to your real server. Both the address and the headers belong to Cloudflare, so the real host cannot be seen from outside. Your hosting account or the site owner knows who it is.
Can I find the real server behind a CDN?
Not here. We deliberately do not try, because finding an origin that a CDN protects is a first step in attacking it. Site owners can always see their own origin in their hosting dashboard. If you need to reach whoever runs the site, use the abuse contact or the domain's registration data from WHOIS.
Is the host the same as the domain registrar?
No. The registrar sells the domain name and keeps it registered. The host runs the server that delivers the pages. They can be the same company, but often are not. A domain registered at one company can point to a site hosted at another and use DNS from a third.
Who do I report phishing or abuse to?
Report it to the abuse contact of the network that serves the site. The page lists the registry's abuse mailbox for that network, and the provider's own report page when it has one. If a CDN is in front of the site, report to the CDN, which can pass the report on to its customer.
How accurate is the result?
When a CNAME, a published address range or a header names a provider, it is very reliable. When the answer rests on the network owner alone, it points to the hosting company or its reseller. The confidence label shows which case you have, and the evidence tab lists every clue so you can check it yourself.
Does the checker contact the website?
Sometimes, once. If DNS and network data already identify a CDN, platform or host, nothing is sent to the site. Otherwise one HEAD request over https asks for response headers, which never include the page. You can switch the request off in More options. For a full look at the headers, use the HTTP headers checker.
Use it from AI, the API or the command line
Every LookupOwl tool is also a free API and an MCP tool, with no key and no account. This one is website_hosting. Please be kind to the rate limits.
curl "https://lookupowl.com/api/v1/tools/website-hosting?q=www.cloudflare.com"claude mcp add --transport http lookupowl https://lookupowl.com/mcp