Can I perform a DNS lookup (hostname to IP address) using client-side Javascript? Code Answer

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I would like to use client-side Javascript to perform a DNS lookup (hostname to IP address) as seen from the client’s computer. Is that possible?

Answer

There’s no notion of hosts or ip-addresses in the javascript standard library. So you’ll have to access some external service to look up hostnames for you.

I recommend hosting a cgi-bin which looks up the ip-address of a hostname and access that via javascript.

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