Whose domain is this? ICANN responds with the Lookup website

The Domain Name Registration Data Lookup website allows you to search for domain names and the objective is to offer answers in a format that is more accessible – and understandable – by the common user, with the information obtained through the various domain registration entities.

If you want to know who registered the name of a particular website here that you should look for, because at this moment the "old man" WHOIS is not working directly, although the service is used through Lookup when no RDAP data is identified (Registration Data Access Protocol).

There are limitations and not all types of domains and domains in countries are available, but this is a tool that anyone who works in the development of websites and Internet strategy of organizations knows well, and that can also be useful to the common of internet users who want to know better the information of who is behind a given website.