I want to do a bulk reverse DNS query to a specific nameserver.
Currently, after searching here and Google. I got it to work for 1 entry at the time with the following command:
dig @NAMESERVER -x 10.10.10.10 +short
This returns exactly what I want. But If I want to do this for multiple IP addresses, it fails. What I did was to make a list of 2 IP addresses to test.
I'm trying to use the following command:
dig @NAMESERVER -x -f dnsquery.txt +short
This does not show any result, what am I doing wrong?
The input files has 2 lines, each with 1 IP address: