Registro DMARC
v=DMARC1; p=reject; rua=mailto:a@dmarc.facebookmail.com; ruf=mailto:fb-dmarc@datafeeds.phishlabs.com; pct=100

Registro IPv4
host: facebook.com
class: IN
ttl: 90
type: A
ip: 157.240.243.35

Servidores DNS Principal (mname) y Secundario (rname)
host: facebook.com
class: IN
ttl: 3504
type: SOA
mname: a.ns.facebook.com
rname: dns.facebook.com
serial: 4207849484
refresh: 14400
retry: 1800
expire: 604800
minimum-ttl: 300

Servidor de Correo
host: facebook.com
class: IN
ttl: 2102
type: MX
pri: 10
target: smtpin.vvv.facebook.com

Información TXT
host: facebook.com
class: IN
ttl: 3600
type: TXT
txt: google-site-verification=A2WZWCNQHrGV_TWwKh6KHY90tY0SHZo_RnyMJoDaG0s
entries: Array

Información TXT
host: facebook.com
class: IN
ttl: 3600
type: TXT
txt: zoom-domain-verification=4b2ef4e1-6dee-4483-9869-9bef353fd147
entries: Array

Información TXT
host: facebook.com
class: IN
ttl: 3600
type: TXT
txt: google-site-verification=wdH5DTJTc9AYNwVunSVFeK0hYDGUIEOGb-RReU6pJlY
entries: Array

Información TXT
host: facebook.com
class: IN
ttl: 3600
type: TXT
txt: google-site-verification=sK6uY9x7eaMoEMfn3OILqwTFYgaNp4llmguKI-C3_iA
entries: Array

Información TXT
host: facebook.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 redirect=_spf.facebook.com
entries: Array

Registro IPv6
host: facebook.com
class: IN
ttl: 90
type: AAAA
ipv6: 2a03:2880:f170:81:face:b00c::25de