Upload a QR code image and extract the data out of it.
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.
Get all possible details about a domain name.
Get the web-host of a given website.
Generate a SHA-1 hash for any string input.