Expertise level: Easy
To query DNS servers, you can use the "host" command or "dig" command.
For example, if you want to get the IP address for your domain, use one of the two following commands:
To get the MX records, use any of the following commands:
host -t mx domain.com
dig mx domain.com
To get the nameservers records for your domain, use any of the following commands:
host -t ns domain.com
dig ns domain.com
To query a DNS record on a specific server (to check if the DNS zone is properly configured, for example):
dig domain.com @DNS_server
"DNS_Server" can be replaced by an A entry or an IP address.
For example, to query the DNS zone of domain.com on the google public DNS server, we would use the following command:
dig domain.com @18.104.22.168