Registro IPv4
host: xx-fbcdn-shv-01-bcn1.fbcdn.net
class: IN
ttl: 3600
type: A
ip: 157.240.243.2

Información TXT
host: xx-fbcdn-shv-01-bcn1.fbcdn.net
class: IN
ttl: 3024
type: TXT
txt: v=spf1 a ~all
entries: Array