Check bulk IP for reverse DNS (rDNS)

Recently I’ve encounter list of IPs that are related to CoinHive. So I want to check for these IPs DNS. We can do that by using dig command to perform reverse DNS (rDNS).

Reverse DNS (rDNS) is a method of resolving an IP address into a domain name, just as the domain name system (DNS) resolves domain names into associated IP addresses.

I found this script at this site:

Just save this code above in your Linux/*nix machine, and run this command as below:

The result should be like this:

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