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Website IP Address Lookup

Which addresses a domain resolves to, and what the reverse lookup says.

The domain to look up

Queries go straight from your browser to public resolvers and registry services. Nothing about the domain you look up passes through this site.

How this check works

A and AAAA records are queried over DNS-over-HTTPS, then each address is looked up in reverse. Two things are worth understanding about the answer. Several addresses usually means a CDN or load balancer rather than several machines you could reach — and the set you get depends on where you are asking from, because that is how a CDN works. And a reverse lookup returns what the address owner published, so it names a hosting provider or a network, not the website: it tells you where a site is hosted and nothing about who runs it.

What the results mean

Several IPv4 addresses
Normally a CDN or load balancer. The list can differ by resolver and by location.
No IPv6 address
The site is unreachable from an IPv6-only network without a translation layer. Increasingly common on mobile networks.
Reverse DNS
Published by whoever owns the address block. Names the host, not the site.
Nameservers
Where DNS is delegated — often the clearest signal of which provider a site is really using.

Common problems and fixes

I get a different address than a colleague
Expected on any site behind a CDN: the answer depends on where the query comes from. Both are correct.
The reverse lookup returns nothing
Reverse records are optional and many hosts do not publish them. Their absence means nothing except that nobody set one.
I want the origin server behind Cloudflare
This will not reveal it, and neither will any DNS lookup — hiding the origin is the point of the arrangement.

Frequently asked questions

How do I find the IP address of a website?

Enter the domain above. The A record is the IPv4 address and AAAA is IPv6. If several come back, the site is behind a CDN or a load balancer and the set you see depends on where you are asking from.

Does the IP address tell me who owns a website?

No. It tells you which network hosts it, which for most sites is a shared hosting provider or a CDN serving millions of others. A reverse lookup names that provider. Ownership questions are answered by registration records, not addresses.

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