Registro DMARC
v=spf1 a ~all

Registro IPv4
host: scontent.fmex28-1.fna.fbcdn.net
class: IN
ttl: 3600
type: A
ip: 187.190.32.17

Información TXT
host: scontent.fmex28-1.fna.fbcdn.net
class: IN
ttl: 7200
type: TXT
txt: v=spf1 a ~all
entries: Array

Registro IPv6
host: scontent.fmex28-1.fna.fbcdn.net
class: IN
ttl: 3600
type: AAAA
ipv6: 2806:2f0:390:3201:face:b00c::a7