Query TXT/SPF, DKIM and DMARC at once dig
Pull SPF, DMARC and DKIM TXT records in one loop for mail audits
for r in example.com _dmarc.example.com sel._domainkey.example.com; do dig +short TXT $r; done
more dig
all 11 commands →
Check CAA records before issuing certs
dig +short CAA example.com
Resolve SRV records for service discovery
dig +short SRV _sip._tcp.example.com
Force TCP and show remaining TTL
dig +tcp +ttlunits +noall +answer example.com @8.8.8.8
Clean answer-only output
dig +noall +answer example.com
Find authoritative nameservers via NS chase
dig +nssearch example.com