Easily convert days to seconds.
Easily convert days to minutes.
Easily convert days to weeks.
Easily convert days to months.
Easily convert days to years.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get all possible details about a domain name.
Ping a website, server or port..
Get all the HTTP headers that an URL returns for a typical GET request.
Get all possible details about an SSL certificate.
Take an IP and try to look for the domain/host associated with it.