Registro DMARC
v=DMARC1; p=reject; rua=mailto:report@dmarc.amazon.com; ruf=mailto:report@dmarc.amazon.com

Registro IPv4
host: amazon-adsystem.com
class: IN
ttl: 272
type: A
ip: 52.200.46.40

Registro IPv4
host: amazon-adsystem.com
class: IN
ttl: 272
type: A
ip: 54.145.59.57

Registro IPv4
host: amazon-adsystem.com
class: IN
ttl: 272
type: A
ip: 52.205.243.115

Servidores DNS Principal (mname) y Secundario (rname)
host: amazon-adsystem.com
class: IN
ttl: 900
type: SOA
mname: dns-external-master.amazon.com
rname: root.amazon.com
serial: 666
refresh: 600
retry: 300
expire: 604800
minimum-ttl: 900

Información TXT
host: amazon-adsystem.com
class: IN
ttl: 900
type: TXT
txt: v=spf1 -all
entries: Array