dig.md

Resolve domain using specific DNS server and TCP

dig +tcp @<dnsServer> <domain>

Get nameserver

dig +short NS <domain>

Reverse search (rDNS)

dig -x <ip> +short

Get mail server

dig <domain> mx

Zonetransfer on specific host

dig axfr @<dns-ip> <domain>

Get any information

dig ANY @<dns-ip> <domain>

Check sender policy framework

dig -t txt <domain> | grep -i spf

Get txt records

dig -t txt <domain>