Find out who hosts and powers any website.
Paste a domain and we will reveal the hosting provider, CDN, certificate, DNS, email host and CMS in under a second. Free anonymous tier, free account for higher limits.
Sample output
A complete fingerprint, on one page.
Each row below comes from a separate probe running in parallel, then merged into one fingerprint.
- ●Hosting + ASN derived from reverse-IP and BGP data.
- ●CDN, CMS and email host matched against a curated signature library.
- ●WHOIS / RDAP, TLS chain and HTTP timing in a single call.
Recently checked
The last public lookups.
| Domain | Hosting | Stack | CC |
|---|---|---|---|
| blesk.cz | Ringier Slovakia Media s.r.o. |
Fastly
|
🇸🇰 SK |
| jolla.com | Amazon.com, Inc. |
WordPress
|
🇮🇪 IE |
| 0daylabs.ai | Fastly, Inc. |
Fastly
|
🇺🇸 US |
| 0604.ai | Fastly, Inc. |
Fastly
|
🇺🇸 US |
| 44digital.ae | Fastly, Inc. |
Fastly
|
🇺🇸 US |
| 2brn.ai | Fastly, Inc. |
Fastly
|
🇺🇸 US |
| pixieditor.net | Fastly, Inc. |
Fastly
|
🇺🇸 US |
| 4610hosting.com | LiquidNet US LLC |
WordPress
|
🇺🇸 US |
Public probes only · 24h dedup · 30+ day minimum domain age · noindex respected · records roll off after 60 days
From the blog
Reading on hosting, DNS and the stack.
-
Who Hosts This Website? A Practical Hosting Detection Guide
Finding out who hosts a website sounds trivial until a CDN sits in front of the origin. This guide walks through what a hosting provider actually is, the manual lookups you can run yourself, and where automated detection — including ours — quietly guesses. The goal is an honest mental model, not a magic answer.
· 11 min -
CDN Detection: Spot Cloudflare, CloudFront, Fastly or Akamai
A practical guide to detecting which CDN sits in front of a website. We look at the DNS, HTTP header and TLS signals that reliably fingerprint Cloudflare, CloudFront, Fastly and Akamai. You will also learn why some providers are deliberately hard to identify, and how to read the output without jumping to false conclusions.
· 8 min -
Why a Hosting Checker Can Be Wrong: CDN and Reverse Proxy
A hosting checker reads what a domain shows to the public internet, and a CDN like Cloudflare deliberately changes that picture. This guide explains why the visible IP is often the edge, not the real host, and which signals raise or lower confidence. It also covers where the honest answer is simply origin hosting unknown, and why bypassing a site's security to find the origin is the wrong move.
· 8 min
How it works
No tricks. Just careful, parallel inspection.
Resolve
DNS lookup against authoritative resolvers — A, AAAA, NS, MX. Cached for one hour.
Probe
TLS handshake, HTTP fetch, RDAP query and IP enrichment run in parallel under a one-second budget.
Fingerprint
Match response headers, body markers and meta tags against a curated CDN, CMS and email-provider library.
FAQ
Common questions
How do you detect which hosting provider a website uses?
We resolve the domain to its IP address, then map that IP to the owning network using ASN and reverse-IP data. That reveals the datacenter or cloud provider behind the site — even when it sits behind a CDN. Results are heuristic but cross-checked against a curated signature library.
Is HostingChecker free?
Yes. Anonymous visitors get 3 lookups per day; a free account raises that to 50 per day. No credit card required.
What does a check reveal?
Hosting provider and ASN, IP (v4/v6), nameservers and DNS records, CDN/WAF, SSL/TLS certificate, HTTP server headers, CMS/framework, email provider, plus security-header, email-authentication (SPF/DKIM/DMARC) and IP-reputation signals.
Do you store the domains I check or my IP address?
Public checks may appear in the recent-checks feed (with privacy filtering) and are purged after a retention window. Your IP is used only for rate limiting. Result pages are noindex and excluded from search engines.
Why does a site show Cloudflare instead of the real host?
When a site is fronted by a CDN like Cloudflare, the visitor-facing IP belongs to the CDN, not the origin host. We label this clearly — the reverse-IP and ASN still point at the CDN, and origin detection is not always possible by design.