Easily convert ICO image files to GIF.
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Easily convert ICO image files to BMP.
Find A, AAAA, CNAME, MX, NS, TXT, SOA DNS records of a host.
Get the gravatar.com globally recognized avatar for any email.
Get all possible details about a domain name.
Get all possible details about an SSL certificate.
Take an IP and try to look for the domain/host associated with it.
Ping a website, server or port..