DNS lookup for a list of domains

Question

Hi all,

I have a list of domains (about 100 or so) in a text file called domains.txt, I want to find out the A records of all of those domains but I don’t want to do it manually for each single domain.

Is there a command that I could use to do this automatically for all domains?

Thanks!

Answer 1

bobbyiliev October 13, 2019

Hello,

Yes, you could use this command to do a quick DNS lookup for all of the domains in the domains.txt file:

cat domains.txt |xargs -I % echo "echo % ; dig +short %" | sh

Hope that this helps!
Regards,
Bobby

Reply Report

bitmap October 13, 2019

Thanks! This helps a lot, and if I wanted to check the MX record as well what would I need to do?
Reply Report
- bobbyiliev October 13, 2019
  
  Hello,
  
  In this case the command would be:
  
  cat domains.txt |xargs -I % echo "echo % ; dig +short % ; dig +short mx %" | sh
  
  Regards,
  Bobby
  
  Reply Report

Answer 2

bitmap October 13, 2019

Thanks! This helps a lot, and if I wanted to check the MX record as well what would I need to do?
Reply Report
- bobbyiliev October 13, 2019
  
  Hello,
  
  In this case the command would be:
  
  cat domains.txt |xargs -I % echo "echo % ; dig +short % ; dig +short mx %" | sh
  
  Regards,
  Bobby
  
  Reply Report

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