WHOIS
Shows the registrar, the registration status and the registration period of a domain. The data comes from the RDAP or WHOIS server of the respective registry; personal data is often not public.
WHOIS & DNS
DNS
Shows which IP addresses, mail servers and name servers a domain or subdomain points to. Queried are A, AAAA, CNAME, MX, NS, TXT, SOA and CAA.