Registro DMARC
v=DMARC1;p=reject;pct=100;rua=mailto:c7xrs-8253@rua.dmarc.emailanalyst.com,mailto:dmarc@dropbox.com

Registro IPv4
host: db.tt
class: IN
ttl: 90
type: A
ip: 162.125.248.21

Servidores DNS Principal (mname) y Secundario (rname)
host: db.tt
class: IN
ttl: 900
type: SOA
mname: ns-1191.awsdns-20.org
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Registro IPv6
host: db.tt
class: IN
ttl: 90
type: AAAA
ipv6: 2620:100:6040:21::a27d:f815