Free · live registry data · no login

Who Is Hosting This Website?

Identify the host behind a domain.

How it works

Find out who is hosting a website

Type any domain and we trace where the site is actually served from: the IP it resolves to, the company that owns that IP block (from the regional internet registry), reverse DNS, and response headers that reveal a CDN or platform such as Cloudflare, Vercel, Shopify or WP Engine. We also show the nameserver provider, which is often a different company from the web host. Useful before a migration, for due diligence, or when you need to send an abuse report.

Results appear here after you click Find the host.

How this works

1
Resolve and fetch
We look up the A, www CNAME and NS records, then request the homepage from our server to capture live response headers.
2
Identify the network
The answering IP is checked against regional registry data for the owning organisation, ASN, country and reverse DNS.
3
Match fingerprints
Headers like cf-ray, x-vercel-id or x-shopid and known network names are matched to hosting companies and CDNs.

Frequently asked questions

How can I find out who hosts a website?: Resolve the domain to an IP, then check who owns that IP block in the regional internet registry (ARIN, RIPE, AFRINIC, APNIC or LACNIC). This tool does that automatically and adds header fingerprints, because many platforms announce themselves in response headers.
Why does it say Cloudflare when I know the site is on another host?: Cloudflare is a reverse proxy: every public request hits Cloudflare's IPs first, so the IP, ASN and reverse DNS all belong to Cloudflare. The actual origin server is deliberately hidden. The same applies to other CDNs such as Fastly, Akamai and CloudFront.
Is the web host the same as the domain registrar?: Not necessarily. The registrar is where the domain name is registered; the web host is where the site's files run; the DNS provider is where records are managed. They can be three different companies, and this tool shows the host and DNS provider separately.
Can I use this to report a phishing or abusive site?: Yes. The network owner shown is the company responsible for the IP space, and registry records for that network include an abuse mailbox. If a CDN is in front, report to the CDN as well; they have abuse forms and can see the origin.
Why is the host 'Unknown'?: Smaller data centres, resellers and private networks often register IP blocks under a name that does not match a brand you would recognise, and plain nginx or Apache headers carry no fingerprint. The raw organisation name, ASN and reverse DNS are still shown so you can research further.

Every MailShrine domain includes WHOIS privacy, transfer lock, Anycast DNS with DNSSEC and two business mailboxes.