Hosting Checker is a website hosting checker that lets you find the hosting provider behind any domain in seconds — for free. Enter a domain name and you'll get back the hosting company, IP address, ASN, and data center details with no signup required. It also offers a Chrome Extension: “See who hosts any site you visit, directly from your browser toolbar. No copy-pasting required.”

## How it works

Every website is served from a server with a public IP address, and that IP is registered to an organization through one of the regional internet registries. The tool traces that path in three steps: DNS Resolution, RDAP Lookup, and Host Identification. “The ASN is matched against our curated database of hosting providers, cloud platforms, and CDNs to return a clean provider name alongside the raw technical details.”

## Notes

The official page presents Hosting Checker as a web-based tool and Chrome extension. No signup, no API key, no limits on basic usage. Results depend on where the domain's DNS points; if a domain uses Cloudflare, the result will show Cloudflare rather than the underlying host, since Cloudflare sits in front of the origin server.