Registro DMARC
v=DMARC1;p=reject;pct=100;fo=1;ri=86400;adkim=r;aspf=r;rua=mailto:reports@dmarc.cyber.dhs.gov;ruf=mailto:reports@dmarc.cyber.dhs.gov;

Registro IPv4
host: history.gov
class: IN
ttl: 28800
type: A
ip: 52.206.136.3

Registro IPv4
host: history.gov
class: IN
ttl: 28800
type: A
ip: 52.44.89.206

Servidores DNS Principal (mname) y Secundario (rname)
host: history.gov
class: IN
ttl: 900
type: SOA
mname: ns1.fedmettel.net
rname: please_set_email.absolutely.nowhere
serial: 841
refresh: 10800
retry: 1080
expire: 2419200
minimum-ttl: 900

Servidor de Correo
host: history.gov
class: IN
ttl: 28800
type: MX
pri: 10
target: us.etp.fireeyegov.com

Información TXT
host: history.gov
class: IN
ttl: 28800
type: TXT
txt: v=spf1 ~all
entries: Array

Registro IPv6
host: history.gov
class: IN
ttl: 28800
type: AAAA
ipv6: 2600:1f18:43e8:f302:b470:d266:4d03:3ed8

Registro IPv6
host: history.gov
class: IN
ttl: 28800
type: AAAA
ipv6: 2600:1f18:43e8:f301:9046:c05f:75e7:c481