Convert a list of DNS names to IPs

IRJ

@dustinb3403 said in Convert a list of DNS names to IPs:

What is the use case you need the IP addresses?

I have a list of DNS names that I need to convert to IP addresses

IRJ

I see alot of windows solutions, but I am looking for a linux one..

black3dynamite

Convert Internet Domains to IP
http://domaintoipconverter.com/

Resolve IP Addresses from List of Host Names
https://gallery.technet.microsoft.com/scriptcenter/Resolve-IP-Addresses-from-df4cbbe5

On Linux systems, use a commands like dig
dig +short -4 -f dns.txt
-f = read a list of dns names in a text file
-4 = show the ip address in IPv4

IRJ

@black3dynamite said in Convert a list of DNS names to IPs:

Convert Internet Domains to IP
http://domaintoipconverter.com/

Resolve IP Addresses from List of Host Names
https://gallery.technet.microsoft.com/scriptcenter/Resolve-IP-Addresses-from-df4cbbe5

On Linux systems, use a commands like dig
dig +short -4 -f dns.txt
-f = read a list of dns names in a text file
-4 = show the ip address in IPv4

cool thanks

black3dynamite

@irj said in Convert a list of DNS names to IPs:

@black3dynamite said in Convert a list of DNS names to IPs:

Convert Internet Domains to IP
http://domaintoipconverter.com/

Resolve IP Addresses from List of Host Names
https://gallery.technet.microsoft.com/scriptcenter/Resolve-IP-Addresses-from-df4cbbe5

On Linux systems, use a commands like dig
dig +short -4 -f dns.txt
-f = read a list of dns names in a text file
-4 = show the ip address in IPv4

cool thanks

Here's a better one for dig
dig +noall +answer -f dns.txt
+noall = will not show any information provided by dig
+anwser = will only show the answer section dns name and IP.

IRJ

@black3dynamite said in Convert a list of DNS names to IPs:

dig +noall +answer -f dns.txt

I am not getting any results printed for any of the commands

IRJ

This post is deleted!

IRJ

I am looking for a neat little list of IPs

black3dynamite

@irj said in Convert a list of DNS names to IPs:

@black3dynamite said in Convert a list of DNS names to IPs:

dig +noall +answer -f dns.txt

I am not getting any results printed for any of the commands

I tried it again, but this time at work and it doesn't provide an answer but it works great at home.

stacksofplates

It's pretty simple with Bash and a list of names on each line. Just do

while read dnsname; do
  nslookup $dnsname
done < dnsnames.txt

black3dynamite

@stacksofplates said in Convert a list of DNS names to IPs:

It's pretty simple with Bash and a list of names on each line. Just do
while read dnsname; do
  nslookup $dnsname
done < dnsnames.txt

That's awesome. It even works with .local domain networks too.

black3dynamite

Adding | grep ^Name -A1; echo at the end will only output the dns name and address.

while read dnsname; do
  nslookup $dnsname
done < dnsnames.txt | grep ^Name -A1; echo

IRJ

@stacksofplates said in Convert a list of DNS names to IPs:

while read dnsname; do
nslookup $dnsname

Beautiful