Website Hosting Checker
Find who hosts any website: its IP addresses, the network and company behind them (ASN), CDN, country, name servers and mail servers.
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About the Website Hosting Checker
The Website Hosting Checker finds out who hosts a website. It looks up the domain's IP addresses with a public DNS resolver, asks Team Cymru's IP-to-ASN service which network announces each address, and reads the network's registered owner and abuse contact from the regional internet registry (RDAP). It also shows the CNAME, the name servers (the DNS provider) and the mail servers, and recognises common CDNs, clouds and hosting companies.
Our server asks a public DNS resolver for the domain's addresses, Team Cymru's DNS service for the network (ASN) of each address and the internet registries (RDAP) for its owner. Domain names and results are not stored.
How to use the Website Hosting Checker
- Enter a domain name or a URL.
- Press Find host and read the verdict: the hosting company, or the CDN in front of the site.
- Check the table for each IP address: its network (ASN), owner, country and abuse contact.
- Look at the CNAME and name servers: they often name the platform (Vercel, Netlify, Shopify) even behind a CDN.
Works well with the Website Hosting Checker
- WHOIS Lookup: see who registered the domain and when it expires.
- DNS Lookup: look up every DNS record of the domain.
- Website Technology Checker: see the software the site runs.
Frequently asked questions
Why does it say Cloudflare instead of the real host?
When a site uses a CDN or proxy such as Cloudflare, Fastly or Akamai, its DNS points to the CDN, and the CDN fetches pages from the origin server privately. From outside you can only see the CDN. The CNAME, name servers or response headers sometimes reveal the platform behind it.
What is an ASN?
An autonomous system number identifies a network on the internet, such as AS13335 for Cloudflare or AS16509 for Amazon. Every public IP address is announced by one, so the ASN tells you which company's network the server is on.
How do I report abuse from a site?
Use the abuse contact shown for its network (from the registry) and, for the domain itself, the registrar's abuse contact in the WHOIS Lookup. Include URLs and timestamps.
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