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Convert text to binary and the other way for any string input.
Convert text to hexadecimal and the other way for any string input.
Convert text to ascii and the other way for any string input.
Get approximate IP details.
Check if the URL is cached or not by Google.
Check whether a website is using the new HTTP/2 protocol or not.
Take an IP and try to look for the domain/host associated with it.
Generate a SHA-3/224 hash for any string input.
Decode Base64 input to back to string.