Registro IPv4
host: xx-fbcdn-shv-02-mia3.fbcdn.net
class: IN
ttl: 3600
type: A
ip: 157.240.14.19

Información TXT
host: xx-fbcdn-shv-02-mia3.fbcdn.net
class: IN
ttl: 7200
type: TXT
txt: v=spf1 a ~all
entries: Array