Website Hosting Checker
See which companies stand behind a website. The checker resolves the site's addresses, identifies the network that operates them, detects a CDN or hosting platform from the response, and shows who runs the domain's DNS and email.
- Encrypted connection
- No sign-up
- Free to use
How to use Website Hosting Checker
- Enter a domain or website address.
- Select Find hosting.
- Read the network operator at the top, and the note if the site sits behind a CDN or proxy.
- Check the sections for web servers, the delivery layer, DNS hosting and email hosting.
Website Hosting Checker features
Network operator
The organisation and autonomous system for each of the site's IP addresses, from registry and routing data.
CDN and platform detection
Recognises Cloudflare, CloudFront, Fastly, Akamai, Vercel, Netlify, GitHub Pages and other services from response headers.
Proxy awareness
Says clearly when the visible addresses belong to a proxy and the origin host is hidden.
DNS provider
Name servers of the domain and the company that operates them.
Email provider
Mail servers and the email service they belong to.
IPv4 and IPv6
Looks at both address families and at reverse DNS names.
When to use Website Hosting Checker
- Finding the right company to contact about abuse or a legal matter.
- Learning what infrastructure a competitor or a prospective client uses.
- Confirming that a migration to a new host or CDN is complete.
- Untangling an inherited setup where hosting, DNS and email are with different providers.
Website Hosting Checker FAQ
How can a tool tell who hosts a website?
Every site resolves to IP addresses, and every address block is registered to an organisation and announced on the internet by a network with a public number. Looking these up identifies the operator, which for most sites is the hosting company or cloud platform.
Why does the result show Cloudflare or another CDN instead of a hosting company?
Many sites route their traffic through a content delivery network or a protective proxy. Visitors connect to that service, and it fetches pages from the real server in the background. Only the proxy's addresses are public; the origin server is deliberately hidden, and no outside lookup can reveal it reliably.
Can a website use several providers at once?
Yes, and it is common. A domain may be registered with one company, use the DNS of a second, serve the site from a third, sit behind the CDN of a fourth and handle email with a fifth. The checker lists these parts separately because they are often confused.
Is the network operator always the hosting company?
Usually, but not always. Resellers and managed hosting firms rent servers from large infrastructure providers, so the registry shows the infrastructure company. The reverse DNS name sometimes hints at the reseller.
Why are there several IP addresses?
Sites use more than one address for redundancy and load distribution, and often have both IPv4 and IPv6 addresses. With CDNs, the addresses you get depend on where the lookup is made from.
Does this show where the server is physically located?
It shows the country in which the address block is registered. That is often, but not always, where the machine is. Large networks use addresses far from their registered country, and CDNs answer from whichever location is closest to the visitor.
The layers behind a website
People speak of “the host” of a website as if there were one company, yet a modern site is delivered by several layers that can each belong to a different provider. Knowing the layers explains most hosting lookups that seem surprising at first.
The outermost layer is DNS. The domain's name servers answer the question of where the site lives, and they belong to the DNS provider, which may be the registrar, the hosting company or a specialised service. Changing DNS records has to happen there, wherever the site itself is hosted.
Next comes the delivery layer. A content delivery network or reverse proxy receives the visitor's connection, serves cached files from a nearby location, filters attacks and passes the remaining requests to the origin. When such a service is in use, its addresses are all that the public sees. Behind it sits the origin: a server or platform at a hosting company or cloud provider, where the site's code and data actually reside.
Email is separate again. The MX records of the domain decide where mail is delivered, and a growing number of organisations use a dedicated mailbox provider that has nothing to do with their web hosting. This matters during migrations: moving a website to a new host must not disturb the MX records, or email stops arriving. Looking at all layers together, as this tool does, shows which provider is responsible for which part before you change anything.