Registro DMARC
v=spf1 a ~all

Registro IPv4
host: Facebook.mx
class: IN
ttl: 21600
type: A
ip: 69.171.224.11

Registro IPv4
host: Facebook.mx
class: IN
ttl: 21600
type: A
ip: 66.220.158.11

Registro IPv4
host: Facebook.mx
class: IN
ttl: 21600
type: A
ip: 66.220.149.11

Registro IPv4
host: Facebook.mx
class: IN
ttl: 21600
type: A
ip: 69.171.242.11

Registro IPv4
host: Facebook.mx
class: IN
ttl: 21600
type: A
ip: 69.171.229.11

Servidores DNS Principal (mname) y Secundario (rname)
host: Facebook.mx
class: IN
ttl: 21600
type: SOA
mname: ns1.lovellsnames.org
rname: hostmaster.lovellsnames.org
serial: 2013092100
refresh: 28800
retry: 3600
expire: 2419200
minimum-ttl: 3600