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LookupOwl

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.

A domain name or a web address.

More options

Allow one request to the site (HEAD, over https) to read response headers that give away CDNs and platforms. It is only made when the DNS and network data have not already identified the host. Switch off to use DNS and network data alone.

Also look up the abuse contact of the network that serves the site (one registry lookup).

Try:

Results for example.com

Checked live lookup21 ms

JSONCheck again

Behind a CDN

Cloudflare

The site is behind Cloudflare, a CDN or proxy. It answers for the site, so the server that actually hosts it stays hidden.

CDN or proxyOrigin hiddenHigh confidence
DNS provider
Cloudflare

hera.ns.cloudflare.com

Email
None (null MX)

No mail servers listed

Network
Cloudflare, Inc.

AS13335 · Canada

Addresses
4

Every address is listed in the details

Path to the site

Visitors reach Cloudflare, which fetches pages from the origin server. The origin is not visible from outside, and we do not try to find it.

  • Because a CDN or proxy answers for the site, the address you see is the CDN's, not the origin server's. The origin is not discoverable from here, and we do not try to find it.
Evidence1
ProviderKindClues
CloudflareCDN or proxy
  • 104.20.23.154 is in Cloudflare's published address ranges (104.16.0.0/13)
  • 172.66.147.243 is in Cloudflare's published address ranges (172.64.0.0/13)
  • 2606:4700:10::ac42:93f3 is in Cloudflare's published address ranges (2606:4700::/32)
  • 2606:4700:10::6814:179a is in Cloudflare's published address ranges (2606:4700::/32)
  • AS13335 (Cloudflare, Inc.) serves 2 of 4 addresses

DNS and network data were enough, so the site itself was not contacted.

Addresses4
AddressNetworkCountryProvider
104.20.23.154Cloudflare, Inc. AS13335CanadaCloudflare
172.66.147.243Cloudflare, Inc. AS13335CanadaCloudflare
2606:4700:10::ac42:93f3–CanadaCloudflare
2606:4700:10::6814:179a–CanadaCloudflare
DNS provider2

DNS is hosted by Cloudflare.

NameserverProviderMatched
hera.ns.cloudflare.comCloudflarecloudflare.com
elliott.ns.cloudflare.comCloudflarecloudflare.com
Email provider0

example.com says it does not receive email (a null MX record).

Report abuse

Report spam, phishing or attacks to the network that serves the site. When a CDN is in front, report to the CDN: it can pass the report on to its customer.

Provider
Cloudflare
Network
CLOUDFLARENET, 104.16.0.0/12
Abuse mailbox
[email protected]
Report page
abuse.cloudflare.com
For address
104.20.23.154

Network owners and countries: IP geolocation by DB-IP · CC BY 4.0

Structured result (JSON) · 4.3 KB
{
  "host": "example.com",
  "domain": "example.com",
  "dns": {
    "status": "ok",
    "cnames": [],
    "minTtl": 28
  },
  "verdict": {
    "kind": "cdn",
    "summary": "The site is behind Cloudflare, a CDN or proxy. It answers for the site, so the server that actually hosts it stays hidden.",
    "provider": {
      "id": "cloudflare",
      "name": "Cloudflare",
      "kind": "cdn"
    },
    "originHidden": true,
    "confidence": "high",
    "others": []
  },
  "web": [
    {
      "ip": "104.20.23.154",
      "version": 4,
      "asn": {
        "number": 13335,
        "organization": "Cloudflare, Inc.",
        "range": "104.20.0.0/18"
      },
      "country": {
        "code": "CA",
        "name": "Canada"
      },
      "provider": {
        "id": "cloudflare",
        "name": "Cloudflare",
        "kind": "cdn"
      },
      "evidence": [
        "In Cloudflare's published address ranges (104.16.0.0/13)",
        "Network AS13335, Cloudflare, Inc."
      ]
    },
    {
      "ip": "172.66.147.243",
      "version": 4,
      "asn": {
        "number": 13335,
        "organization": "Cloudflare, Inc.",
        "range": "172.66.128.0/19"
      },
      "country": {
        "code": "CA",
        "name": "Canada"
      },
      "provider": {
        "id": "cloudflare",
        "name": "Cloudflare",
        "kind": "cdn"
      },
      "evidence": [
        "In Cloudflare's published address ranges (172.64.0.0/13)",
        "Network AS13335, Cloudflare, Inc."
      ]
    },
    {
      "ip": "2606:4700:10::ac42:93f3",
      "version": 6,
      "country": {
        "code": "CA",
        "name": "Canada"
      },
      "provider": {
        "id": "cloudflare",
        "name": "Cloudflare",
        "kind": "cdn"
      },
      "evidence": [
        "In Cloudflare's published address ranges (2606:4700::/32)"
      ]
    },
    {
      "ip": "2606:4700:10::6814:179a",
      "version": 6,
      "country": {
        "code": "CA",
        "name": "Canada"
      },
      "provider": {
        "id": "cloudflare",
        "name": "Cloudflare",
        "kind": "cdn"
      },
      "evidence": [
        "In Cloudflare's published address ranges (2606:4700::/32)"
      ]
    }
  ],
  "providers": [
    {
      "id": "cloudflare",
      "name": "Cloudflare",
      "kind": "cdn",
      "evidence": [
        "104.20.23.154 is in Cloudflare's published address ranges (104.16.0.0/13)",
        "172.66.147.243 is in Cloudflare's published address ranges (172.64.0.0/13)",
        "2606:4700:10::ac42:93f3 is in Cloudflare's published address ranges (2606:4700::/32)",
        "2606:4700:10::6814:179a is in Cloudflare's published address ranges (2606:4700::/32)",
        "AS13335 (Cloudflare, Inc.) serves 2 of 4 addresses"
      ]
    }
  ],
  "headers": {
    "status": "not_needed"
  },
  "dnsHosting": {
    "status": "found",
    "nameservers": [
      {
        "name": "hera.ns.cloudflare.com",
        "provider": {
          "id": "cloudflare",
          "name": "Cloudflare",
          "kind": "cdn"
        },
        "pattern": "cloudflare.com"
      },
      {
        "name": "elliott.ns.cloudflare.com",
        "provider": {
          "id": "cloudflare",
          "name": "Cloudflare",
          "kind": "cdn"
        },
        "pattern": "cloudflare.com"
      }
    ],
    "providers": [
      {
        "id": "cloudflare",
        "name": "Cloudflare",
        "kind": "cdn"
      }
    ],
    "summary": "DNS is hosted by Cloudflare."
  },
  "email": {
    "status": "null_mx",
    "mx": [],
    "providers": [],
    "summary": "example.com says it does not receive email (a null MX record)."
  },
  "abuse": {
    "ip": "104.20.23.154",
    "network": "CLOUDFLARENET, 104.16.0.0/12",
    "email": "[email protected]",
    "reportUrl": "https://abuse.cloudflare.com",
    "provider": "Cloudflare"
  },
  "notes": [
    "Because a CDN or proxy answers for the site, the address you see is the CDN's, not the origin server's. The origin is not discoverable from here, and we do not try to find it."
  ],
  "data": {
    "city": {
      "builtAt": "2026-11-01T02:52:26.000Z",
      "release": "2026-11"
    },
    "asn": {
      "builtAt": "2026-11-01T02:52:43.000Z",
      "release": "2026-11"
    }
  },
  "attribution": {
    "text": "IP geolocation by DB-IP",
    "url": "https://db-ip.com",
    "license": "CC BY 4.0",
    "licenseUrl": "https://creativecommons.org/licenses/by/4.0/"
  }
}

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

  1. Enter a domain or a web addressA bare domain such as example.com works, 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.
  2. 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.
  3. 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.

When the origin is hidden behind a CDN

A CDN or reverse proxy such as Cloudflare, Fastly or Akamai answers for the site. Visitors connect to the CDN, and the CDN fetches pages from the real server, the origin. That is why the address you see belongs to the CDN, and why no honest tool can tell you who runs the origin from outside. When we see a CDN, we say "behind Cloudflare" and that the origin is hidden.

We do not try to unmask it. Digging out an origin behind a CDN is a way to attack the site by going around its protection, so this page leaves it alone. If you own the site, your hosting account tells you where the origin is. If you need to report a problem with a site behind a CDN, report it to the CDN's abuse team, which can pass it on.

How the answer is worked out

ClueWhat it shows
CNAME chainA name such as example.cloudfront.net or example.netlify.app points straight at a CDN or platform.
Published address rangesSome 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 headersHeaders 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 hostsThe 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
curl "https://lookupowl.com/api/v1/tools/website-hosting?q=www.cloudflare.com"
MCP
claude mcp add --transport http lookupowl https://lookupowl.com/mcp

Description for AI agents · OpenAPI · llms.txt