Dig Command (Domain Information Groper) to Query DNS

Various Linux Dig Commands (Domain Information Groper) to Query DNS

Dig command stands for (Domain Information Groper) is a network administration command-line tool for querying Domain Name System (DNS) name servers. It is useful for verifying and troubleshooting DNS problems. In this article we will, learn some useful Dig commands.

Using dig command without any options

The below command will show DNS query status in Verbosely.

[root@linuxhelp ~]# dig linuxhelp.com
  < < > >  DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6 < < > >  linuxhelp.com
   global options: +cmd
   Got answer:
   -> > HEADER< 

To Record using +short options

To cut down the output is to use the +short option.

[root@linuxhelp ~]# dig linuxhelp.com +short 
192.155.206.82

To query MX Record for Domain

Run the following command to query Main Exchange Mx Records.

[root@linuxhelp ~]# dig linuxhelp.com MX
  < < > >  DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6 < < > >  linuxhelp.com MX
   global options: +cmd
   Got answer:
   -> > HEADER< 

To Query SOA Record for Domain

Run the following command to query SOA (Start of Authority) Records.

[root@linuxhelp ~]# dig linuxhelp.com SOA

  < < > >  DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6 < < > >  linuxhelp.com SOA
   global options: +cmd
   Got answer:
   -> > HEADER< 

To Query TTL Record for Domain

Run the following command to query Time To Live (TTL) Records.

[root@linuxhelp ~]# dig linuxhelp.com TTL

  < < > >  DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6 < < > >  linuxhelp.com TTL
   global options: +cmd
   Got answer:
   -> > HEADER< > HEADER< 

To Query only answer section

The below command to query answer section alone.

[root@linuxhelp ~]# dig linuxhelp.com +nocomments +noquestion +noauthority +noadditional +nostats

  < < > >  DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6 < < > >  linuxhelp.com +nocomments +noquestion +noauthority +noadditional +nostats
   global options: +cmd
linuxhelp.com.        14399    IN    A    192.155.206.82

To Query ALL DNS Records Types

The below command will perform query the ALL DNS Records.

[root@linuxhelp ~]# dig linuxhelp.com ANY +noall +answer

  < < > >  DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6 < < > >  linuxhelp.com ANY +noall +answer
   global options: +cmd
linuxhelp.com.        21599    IN    SOA    ns1.yookar.com. peter.netaxis.in. 2016030803 3600 7200 1209600 86400
linuxhelp.com.        21599    IN    NS    ns1.yookar.com.
linuxhelp.com.        21599    IN    NS    ns2.yookar.com.
linuxhelp.com.        21599    IN    NS    ns3.yookar.com.
linuxhelp.com.        21599    IN    NS    ns4.yookar.com.
linuxhelp.com.        14399    IN    A    192.155.206.82
linuxhelp.com.        14399    IN    MX    0 linuxhelp.com.

To Query DNS Reverse Look-up

The following command query the DNS Reverse Look-up

[root@linuxhelp ~]# dig -x 192.155.206.82 +short
52.ce.9bc0.ip4.static.sl-reverse.com.

To Query Multiple DNS Records

The following command to query multiple website’ s DNS specific query viz. MX, NS etc. records.

[root@linuxhelp ~]# dig linuxhelp.com mx +noall +answer google.com ns +noall +answer

  < < > >  DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6 < < > >  linuxhelp.com mx +noall +answer google.com ns +noall +answer
   global options: +cmd
linuxhelp.com.        14366    IN    MX    0 linuxhelp.com.
google.com.        21599    IN    NS    ns3.google.com.
google.com.        21599    IN    NS    ns2.google.com.
google.com.        21599    IN    NS    ns1.google.com.
google.com.        21599    IN    NS    ns4.google.com.

Using &ndash f with Dig command

It is the another method to query the multiple DNS records.
First thing you should create one text file and enter your multiple domain into that text file and then use with dig command by following method.

[root@linuxhelp ~]# dig -f dig.txt

  < < > >  DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6 < < > >  facebook.com
   global options: +cmd
   Got answer:
   -> > HEADER< >  DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6 < < > >  google.com
   Got answer:
   -> > HEADER< >  DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6 < < > >  twitter.com
   Got answer:
   -> > HEADER< 
[root@linuxhelp ~]# dig -f dig.txt +noall +answer
facebook.com.        35    IN    A    173.252.120.68
google.com.        299    IN    A    216.58.197.78 l
twitter.com.        16    IN    A    199.59.148.82
twitter.com.        16    IN    A    199.59.150.7
twitter.com.        16    IN    A    199.59.149.198
twitter.com.        16    IN    A    199.59.149.230

Command to the check the version of Dig tool

[root@linuxhelp ~]# dig -v
DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6