Who is hosting this website?
Paste a domain or an address. We find the network that serves its pages, the provider that runs its DNS and the one that receives its email: three answers that often differ, and that we keep apart.
How to read this result
"Who hosts this site" covers three questions, and mixing them up often sends you looking in the wrong place:
| The question | Where the answer is | Why people ask |
|---|---|---|
| Who serves the pages? | the network of the site's IP address (A or AAAA record) | the site is slow, down, or about to move |
| Who runs the names? | the domain's DNS servers (NS records) | to change an address, add a subdomain, verify a service |
| Who receives the email? | the mail exchangers (MX records) | email no longer arrives, or you are switching provider |
A site hosted at one company, with its DNS at Cloudflare and its email at Google Workspace, is entirely ordinary.
When the host is hidden
Cloudflare, Akamai, Fastly and other delivery networks sit in front of the server: visitors, and we with them, only see their addresses. That is their job, in particular to shield the server from attacks. In that case the real host cannot be determined from the outside, and we say so rather than answering "Cloudflare" as if it were one.
Where the names come from
Each address belongs to a numbered network (an AS), registered with a regional registry. We query RIPEstat, the public service of the RIPE NCC, which gives the network number and its official holder. For the most common hosts we add a readable name; the official holder is always shown alongside.
What this tool does not do
- It cannot see behind a delivery network: behind Cloudflare, the real host stays unknown by design.
- It does not geolocate the server: a network's country is not the machine's, and geolocation databases are often wrong about hosting addresses.
- It does not tell you where the domain was bought: that is the registrar, which the WHOIS tool gives.
Frequently asked questions
How can I find the host of a site behind Cloudflare?
In principle you cannot: that is exactly what Cloudflare hides. The only leads are indirect (a subdomain that does not go through Cloudflare, such as the mail or FTP one), and they offer no certainty. The site owner knows: they are the one to ask.
What is the difference between a host and a registrar?
The registrar rents you the domain name; the host runs the site. They are often two different companies, and a domain can change host without changing registrar. For the latter, use the WHOIS tool.
Why does the reverse name not match the host?
The reverse name is chosen by whoever manages the address, and many never set it. It often gives a hint (ovh.net, your-server.de, amazonaws.com), but the network registered with the registry is what counts.
Going further
Why your host will not tell you your site is down Hosting providers monitor their machines, not your website. Which is why a server can be perfectly healthy while visitors get an error page.The other tools
Is this site down?
Does the site answer, from our server and from another connection? With the cause when it does not.
What CMS is this site using?
The CMS, the shop, the WordPress theme and the tools a page gives away, with the proof for each.
Check a domain name
Expiry date, registrar and status of a domain name.
Know when your host goes down, before your customers do
Hosts almost never warn you of an outage. Expansel checks that your site responds, as often as every fifteen minutes depending on the plan, and emails you as soon as it stops responding, then when it comes back.