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 | DR | CC |
|---|---|---|---|---|
| neasalamina.com | Hostinger International Limited |
WordPress
|
— | 🇫🇷 FR |
| airtex.ac | Cloudflare London, LLC |
Cloudflare WordPress
|
— | 🇺🇸 US |
| saffronofpersia.com | IONOS SE |
WordPress
|
— | 🇺🇸 US |
| websiteradar.net | Cloudflare, Inc. |
Cloudflare WordPress
|
— | 🇨🇦 CA |
| bodybalancevitamins.co.uk | The Constant Company, LLC |
WordPress
|
— | 🇬🇧 GB |
| fao.ku.ac.ke | Kenya Education Network |
Joomla
|
— | 🇰🇪 KE |
| agriculture-environment.ku.ac.ke | Kenya Education Network |
Joomla
|
— | 🇰🇪 KE |
| admissions.ku.ac.ke | Kenya Education Network |
Joomla
|
— | 🇰🇪 KE |
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.
-
CMS Detection: How to Identify WordPress, Shopify, Wix, Webflow and Headless Sites
CMS detection is pattern matching on a public response, not a lookup in a registry. This guide walks through the six signal families every detector uses, the specific fingerprints for WordPress, Shopify, Wix and Webflow, and the two situations — headless architectures and stripped headers — where detection quietly stops working.
· 8 min -
Email Authentication Checker: SPF, DKIM and DMARC for Website Owners
SPF, DKIM and DMARC are three DNS records that decide whether anyone can send mail pretending to be your domain. They matter even if your domain has never sent an email. This guide covers the exact record syntax, what changed when DMARC became a Standards-Track RFC in 2026, the mistakes we see most, and why no automated checker can prove your DKIM is complete.
· 9 min -
Website Migration Tracker: How to Tell When a Site Changed Hosting
A hosting migration leaves fingerprints in DNS, IP, ASN, headers and CDN configuration — but you almost always see them late, and sometimes not at all. This guide covers the five signals that change, how to read them manually, what our migration tracker logs, and why a CDN can hide an origin move completely.
· 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.