Registro DMARC
v=DMARC1; p=none; pct=100; rua=mailto:dmarc-rua+ubuntu@admin.canonical.com

Registro IPv4
host: ubuntu.com
class: IN
ttl: 90
type: A
ip: 185.125.190.21

Registro IPv4
host: ubuntu.com
class: IN
ttl: 90
type: A
ip: 185.125.190.20

Registro IPv4
host: ubuntu.com
class: IN
ttl: 90
type: A
ip: 185.125.190.29

Servidores DNS Principal (mname) y Secundario (rname)
host: ubuntu.com
class: IN
ttl: 3600
type: SOA
mname: ns1.canonical.com
rname: hostmaster.canonical.com
serial: 2018059015
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600

Servidor de Correo
host: ubuntu.com
class: IN
ttl: 3600
type: MX
pri: 10
target: mx.ubuntu.com

Información TXT
host: ubuntu.com
class: IN
ttl: 600
type: TXT
txt: v=spf1 include:_spf.canonical.com +all
entries: Array

Información TXT
host: ubuntu.com
class: IN
ttl: 600
type: TXT
txt: google-site-verification=8CcvY6fsgRbiFk2nyEaiA9rE-ykXOcWUPjJKlO6P4vk
entries: Array

Información TXT
host: ubuntu.com
class: IN
ttl: 600
type: TXT
txt: forward-email-site-verification=6IsURgl2t7
entries: Array

Registro IPv6
host: ubuntu.com
class: IN
ttl: 90
type: AAAA
ipv6: 2620:2d:4000:1::26

Registro IPv6
host: ubuntu.com
class: IN
ttl: 90
type: AAAA
ipv6: 2620:2d:4000:1::27

Registro IPv6
host: ubuntu.com
class: IN
ttl: 90
type: AAAA
ipv6: 2620:2d:4000:1::28