Generate an MD2 hash for any string input.
Generate an MD4 hash for any string input.
Extract email addresses from any kind of text content.
Get the gravatar.com globally recognized avatar for any email.
Get approximate IP details.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Take an IP and try to look for the domain/host associated with it.
Ping a website, server or port..