Free domain to IP lookup. Enter a domain or website and get its IPv4 (A) and IPv6 (AAAA) addresses resolved live from our London probe, each with its TTL and reverse DNS (PTR) name, so you see not just the IP but who it points back to. The fast answer to "what IP address is this website on", with a link to geolocate every result.
A domain name is just a label; the address a browser actually connects to is the IP in the domain's DNS records. This tool resolves both the IPv4 (A) and IPv6 (AAAA) records live from our London probe and shows the reverse DNS for each, so you see not only the address but the network it points back to.
For the full workflow, including how to tell a CDN edge apart from the real origin server and how to verify the address is reachable, see our guide on how to find a website's IP address.
Enter the domain into the tool above. It resolves the A (IPv4) and AAAA (IPv6) records live and shows each address with its reverse DNS name, which is the fastest way to answer 'what IP is this website on'.
Large sites publish multiple A records for round-robin load balancing, and sites behind a CDN resolve to the CDN's edge addresses, which rotate. All of the returned addresses are valid at the time of the lookup.
An A record maps a hostname to an IPv4 address; an AAAA record maps it to an IPv6 address. A dual-stack site publishes both, and dual-stack clients often prefer the IPv6 one.
If the reverse DNS names a CDN such as cloudfront.net or fastly.net, or the network owner is a CDN, you are looking at an edge address, not the origin server. The origin is deliberately hidden behind it.
