Registro IPv4
host: mqtt.c10r.facebook.com
class: IN
ttl: 90
type: A
ip: 157.240.243.18

host: edge-mqtt.facebook.com
class: IN
ttl: 3600
type: CNAME
target: mqtt.c10r.facebook.com

Información TXT
host: mqtt.c10r.facebook.com
class: IN
ttl: 7200
type: TXT
txt: v=spf1 a ~all
entries: Array

Registro IPv6
host: mqtt.c10r.facebook.com
class: IN
ttl: 90
type: AAAA
ipv6: 2a03:2880:f078:13:face:b00c::8e