Get approximate IP details.
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.
Extract email addresses from any kind of text content.
Convert text to ASCII and the other way for any string input.
Take an IP and try to look for the domain/host associated with it.