Who's Hosting This?

The tool resolves the domain's A record to get the IP address, then performs a reverse lookup (WHOIS/ASN query) on that IP to identify the registered organization — usually the hosting provider. It also checks nameservers (NS records), response headers, and known CDN IP ranges (Cloudflare, AWS CloudFront, Fastly, etc.) to build a complete picture of the infrastructure.

If your site uses Cloudflare as a CDN or DNS proxy, all traffic routes through Cloudflare's servers — so the tool sees Cloudflare's IP, not your actual hosting server. This is intentional for security and DDoS protection. To find the real host, check the nameservers or look at server response headers, which may still reveal your origin provider.

An ASN is a unique number assigned to a network (like an ISP, cloud provider, or large company) that allows it to exchange routing information with other networks on the internet. Each major hosting provider has its own ASN: AWS uses ASN 16509, Cloudflare uses ASN 13335, Google uses ASN 15169. By looking up which ASN owns an IP address, we can identify the hosting provider.

You can identify the hosting provider for most websites, but some may be harder to trace. Large enterprises and security-conscious sites use CDN proxies (Cloudflare, Akamai) that mask their origin server IP. In these cases, nameserver records and response headers can help narrow down the underlying infrastructure. The tool provides the best available intelligence from multiple public data sources.

A CDN (Content Delivery Network) is a global network of servers that caches and delivers web content from locations closest to the user. Providers like Cloudflare, AWS CloudFront, Fastly, and Akamai are CDNs. When a site uses a CDN, requests go to the CDN edge server, not the origin server, so the detected IP/host belongs to the CDN. The origin server (actual host) is hidden behind the CDN for performance and security.

A domain registrar is the company you buy your domain name from (e.g. Namecheap, GoDaddy, Google Domains). A hosting provider is the company running the actual server where your website files live (e.g. AWS, DigitalOcean, Vercel). They are often different companies. You can register a domain with Namecheap and host the site on AWS. Nameservers connect the domain (registrar) to the server (host).