Registro DMARC
v=spf1 a ~all

Registro IPv4
host: scontent.fntr3-1.fna.fbcdn.net
class: IN
ttl: 3600
type: A
ip: 187.162.131.17

Información TXT
host: scontent.fntr3-1.fna.fbcdn.net
class: IN
ttl: 7200
type: TXT
txt: v=spf1 a ~all
entries: Array