Take an IP and try to look for the domain/host associated with it.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get approximate IP details.
Get all possible details about a domain name.
Ping a website, server or port..
Easily convert nibbles to terabits (Tbit).
Easily convert bits (bit) to exabits (Ebit).
Easily convert seconds to hours.
Easily convert PNG image files to ICO.
Decode Base64 input to back to string.
Make sure your passwords are good enough.