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 all possible details about an SSL certificate.
Get all possible details about a domain name.
Ping a website, server or port..
Convert text to hexadecimal and the other way for any string input.
Extract email addresses from any kind of text content.
Get approximate IP details.
Get the web-host of a given website.
Generate a paypal payment link with ease.