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

Registro IPv4
host: developers.c10r.facebook.com
class: IN
ttl: 90
type: A
ip: 31.13.83.8

Registro CNAME (Alias)
host: developers.facebook.com
class: IN
ttl: 3294
type: CNAME
target: developers.c10r.facebook.com

Servidor de Correo
host: developers.c10r.facebook.com
class: IN
ttl: 300
type: MX
pri: 10
target: smtpin.vvv.facebook.com

Información TXT
host: developers.c10r.facebook.com
class: IN
ttl: 1800
type: TXT
txt: v=spf1 include:facebookmail.com -all
entries: Array

Registro IPv6
host: developers.c10r.facebook.com
class: IN
ttl: 90
type: AAAA
ipv6: 2a03:2880:f085:d:face:b00c::2

Registro CNAME (Alias)
host: developers.facebook.com
class: IN
ttl: 3294
type: CNAME
target: developers.c10r.facebook.com