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 an SSL certificate.
Ping a website, server or port..
Extract email addresses from any kind of text content.
Convert text to octal and the other way for any string input.
Generate an MD4 hash for any string input.
Convert text to decimal and the other way for any string input.