Whois Lookup Tool performs a WHOIS lookup on an IP address or a domain name. A WHOIS lookup can help find out the owner of a domain name or an IP address on the Internet.
Try an IP address (18.234.247.75).
Try a domain name (http://www.google.com)
Keywords: whois lookup,domain check
Check a port's status easily, find out which ports of your connection is open or closed.