Who Is Hosting This? — Free Hosting Lookup Tool
Want to know who is hosting this website? Enter any domain below and we'll resolve its DNS, find the IP and ASN, detect any CDN in front of it, and report the hosting provider, server location, nameservers, and likely tech stack — in seconds, for free.
Results for cloudflare.com
Nameservers
ns4.cloudflare.comns5.cloudflare.comns6.cloudflare.comns7.cloudflare.comns3.cloudflare.com
Detected tech stack
Add this tool to your site
Found this useful? Embed the free hosting lookup on your own blog or docs with the snippet below.
<iframe src="https://where2host.site/lookup/embed/?domain=cloudflare.com" width="100%" height="320" style="border:0;border-radius:12px;" title="Who is hosting this? — Where2Host" loading="lazy"></iframe>
<p>Hosting lookup by <a href="https://where2host.site/lookup/">Where2Host</a></p>Free tool by Where2Host — Who is hosting this?
How to use the hosting lookup
- Type a domain (e.g.
example.com) into the box above — with or withouthttps://orwww. - Hit Look up host. The tool resolves the domain's DNS to find its current IP address.
- We map that IP's ASN to a known provider and check for CDN fingerprints (Cloudflare, Fastly, Akamai, Imperva).
- Review the provider, server location, nameservers, and detected tech stack in the result card.
Why it matters
Knowing who is hosting this site is the first step in serious competitor research, due diligence, or a smart migration. Three concrete reasons:
- Renewal reality check. Introductory prices are almost always lower than renewals. If a rival is on a host with steep renewal hikes, that's a churn risk you can target — see our best cheap web hosting guide for the full picture.
- Competitor research. Spot whether a competitor is on a managed platform (WP Engine, Kinsta, Cloudways) versus raw cloud (AWS, DigitalOcean). That tells you their likely DevOps maturity and cost structure. Compare options in our hosting comparisons.
- Acquisition & partnership diligence. Before you buy a site or partner with one, confirm where it actually runs. A CDN-fronted domain hides the origin — our tool flags that explicitly so you don't over- or under-estimate infra.
Methodology
This tool is pure server-side PHP. It uses dns_get_record() and gethostbyname() to resolve the domain, then performs a best-effort geo/ASN lookup against a public IP database. A bundled static map of ~40 common hosting ASNs connects the announcing network to a provider name (DigitalOcean, AWS, Google, Cloudflare, SiteGround, Hostinger, Bluehost, and more). CDN detection layers nameserver and CNAME fingerprints on top of the ASN.
What's accurate: the IP, ASN, and network owner that answer the live DNS query are reliable. Edge cases: CDN-fronted sites hide the true origin (flagged as "hidden behind CDN X"); some providers share ASNs; and domains without A/AAAA records or behind DNSSEC/parking may not resolve. When the ASN isn't in our map, we show the network owner name from the IP database.
For deeper, independently tested provider analysis, browse our hosting reviews and our how-we-test methodology.
Frequently asked questions
How does the "who is hosting this" tool work?
It resolves the domain's DNS to find the live IP address, then queries the IP's announcing network (ASN) and owner. A curated map of common hosting ASNs connects that network to a provider name. It also checks nameserver and CNAME fingerprints to detect CDNs like Cloudflare or Fastly.
Why does it say the origin is hidden behind a CDN?
Many sites sit behind a CDN (Cloudflare, Fastly, Akamai, Imperva). In that case the IP you see belongs to the CDN edge, not the real hosting provider. The tool flags this so you don't mistake the CDN for the host. The actual origin server is not exposed for security reasons.
Is the hosting data always accurate?
It is accurate for the IP and ASN that answer the DNS query. Edge cases: CDN-fronted sites hide the origin, some providers share ASNs, and IPv6-only or parked domains may not resolve. The provider map covers ~40 common hosts and falls back to the network owner name when unknown.
Can I add this tool to my own website?
Yes. Use the embed snippet on the results page to place an iframe of the tool on any page. A visible attribution link to Where2Host is included with the embed, which is appreciated but the tool works either way.
What can I do once I know who hosts a site?
You can compare that provider against competitors, check renewal pricing before a contract locks in, or research an acquisition target. If we have reviewed the detected host, the results link straight to our independent review.