Dig

dig is a command line tool like nslookup used to check dns

Find Reverse-DNS/PTR using dig, nslookup, host
Requesting a zone trasnfer with dig

Here is the basic usage

dig DOMAIN_NAME

dig have multiple sections, ANSWER SECTION is what you need to look for. After answer section, it shows some info about DNS server used to query.

+short

+short option allow you to just slow the answer.

root@ok-vm:~# dig +short serverok.in
104.28.18.89
104.28.19.89
root@ok-vm:~# 

To find Specific Record type

dig DOMAIN_NAME RECORD_TYPE

Example

root@ok-vm:~# dig +short serverok.in mx
5 alt1.aspmx.l.google.com.
5 alt2.aspmx.l.google.com.
10 alt3.aspmx.l.google.com.
11 alt4.aspmx.l.google.com.
1 aspmx.l.google.com.
root@ok-vm:~# 

Dig show detailed info

You can use +trace to get more detailed info on dig query.

dig +trace RECORD_TYPE DOMAIN_NAME

Example

dig +trace ns boby.serverok.in

See nslookup, dns