1. How to find the A record of а domain.
Command line:
$ nslookup example.com
2. How to check the NS records of a domain.
Command line:
$nslookup -type=ns example.com
3. How to query the SOA record of a domain.
Command line:
$nslookup -type=soa example.com
4. How to find the MX records responsible for the email exchange.
Command line:
$ nslookup -query=mx example.com
5. How to find all of the available DNS records of a domain.
Command line:
$ nslookup -type=any example.com
6. How to check the using of a specific DNS Server.
Command line:
$ nslookup example.com ns1.nsexample.com
7. How to check the Reverse DNS Lookup.
Command line:
$ nslookup 10.20.30.40
8. How to change the port number for the connection.
Command line:
$ nslookup -port=56 example.com
9.How to change the timeout interval for a reply.
Command line:
$ nslookup -timeout=20 example.com
10. How to enable debug mode.
Debug mode provides important and detailed information both for the question and for the received answer.
Command line:
$ nslookup -debug example.com
Notes:
Authoritative answer – This is the answer that originates from the DNS Server which has the information about the zone file.
Non-authoritative answer – When a nameserver is not in the list for the domain you did a lookup on.
Different port – By default, the DNS servers use port 53.
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