Finding out who hosts a website
Enter a domain and this tool resolves it to its server IP, then identifies the hosting provider or ISP, the network operator, and the server's approximate location - useful for researching a competitor's infrastructure, checking where your own site is actually hosted, or investigating a suspicious domain.
Why this focuses on hosting infrastructure specifically
This tool is built around the hosting-research use case specifically: identifying the provider, network operator (AS), and organization behind a domain's server. The related Geo IP Locator tool uses the same underlying lookup but is framed around general IP/domain geolocation for any purpose - the two surface overlapping data, but this one's layout and emphasis are built for hosting-provider research.
Why CDN-fronted sites hide the real origin host
If a site uses a CDN or reverse proxy (Cloudflare is extremely common), visitors - and this tool - only see the CDN's IP, not the origin server behind it. Finding the true origin host requires different techniques (like checking historical DNS records or subdomain misconfigurations) and is not always possible from the outside, which is an intentional security benefit of using a CDN in the first place.
Common reasons to check a domain's hosting
Comparing where competitors in your space host their sites, confirming a migration to new hosting actually took effect, or doing a first-pass check on an unfamiliar or suspicious domain before interacting with it further are all common, practical reasons to run this kind of lookup.