Convert text to binary and the other way for any string input.
Convert text to hexadecimal and the other way for any string input.
Convert text to decimal and the other way for any string input.
Convert text to octal and the other way for any string input.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get approximate IP details.
Get details of any file type, such as the mime type or last edit date.
Get all possible details about an SSL certificate.
Get the web-host of a given website.
Take an IP and try to look for the domain/host associated with it.