Registro IPv4
host: ctmail.com
class: IN
ttl: 1800
type: A
ip: 216.163.188.56

Servidores DNS Principal (mname) y Secundario (rname)
host: ctmail.com
class: IN
ttl: 600
type: SOA
mname: gns1.cloudns.net
rname: support.cloudns.net
serial: 2024121701
refresh: 7200
retry: 1800
expire: 1209600
minimum-ttl: 600

Información TXT
host: ctmail.com
class: IN
ttl: 1800
type: TXT
txt: v=spf1 +ip4:216.163.188.0/24 +ip4:84.39.157.0/24 +ip4:216.163.176.0/24 +ip4:84.39.152.0/24 +ip4:103.5.198.0/24 +ip4:192.118.40.0/24 include:_spf.expurgate.net ~all
entries: Array