How to Find Out Who Hosts Any Website (3 Ways That Actually Work)

I get this question a lot: "How do I find out what hosting company runs this website?" Sometimes you want to switch to the same host as a site you admire. Sometimes you need it for competitive research. Whatever the reason, it takes about 30 seconds once you know where to look.

Method 1: Use a Hosting Checker Tool (Fastest)

The simplest way is to plug the domain into a hosting checker like the one on this site. You paste in a URL, hit check, and within a few seconds you know the hosting provider, the IP address, the ASN, and often even the data center region. No command line, no registrar accounts, nothing to install.

This works because every domain resolves to an IP address, and every IP block is registered to an organization. A hosting checker does the DNS resolution and the IP lookup in one shot and hands you the answer.

Method 2: DNS Lookup via Command Line

If you are comfortable with a terminal, dig or nslookup will get you the IP address fast:

dig +short github.com

That gives you an IP. From there, you can run a WHOIS lookup on the IP to find the owner. Most of the time you will see something like "Amazon Technologies" or "Cloudflare" in the OrgName field.

Method 3: Check the HTTP Response Headers

Some hosts leave fingerprints in the response headers. A site running on WP Engine, for instance, will often show an X-Powered-By or a server-specific cache header. You can check this with curl:

curl -I https://example.com

Look at the Server and Via headers. This is less reliable than a proper IP lookup because many hosts mask their headers on purpose, but it is a useful secondary check.

Why Results Sometimes Say "Cloudflare"

A very common frustration: you look up a site, and the answer comes back as Cloudflare. The site is not actually hosted at Cloudflare though — Cloudflare is acting as a reverse proxy and CDN in front of the real server. The actual origin host is hidden behind Cloudflare's IP range.

In this case, checking the NS records is more useful. If the nameservers are at a specific registrar or managed host, that is often a clue to the origin infrastructure. You will not always get the full picture, but you will usually get close enough.

What the ASN Tells You

The Autonomous System Number (ASN) is what hosting checkers use to identify providers. AWS has specific ASNs, Google Cloud has others, and so on. Our curated database maps those ASNs to recognizable provider names so you do not have to decode numbers manually.