Whois Lookup

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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 approximate IP details.

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Ping a website, server or port.

Check if the URL is banned and marked as safe/unsafe by Google.

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Get the web-host of a given website.

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Check if the URL is cached or not by Google.

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Make sure your passwords are good enough.

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