Registro DMARC
v=spf1 -all

Registro IPv4
host: atsystems.com
class: IN
ttl: 3600
type: A
ip: 15.197.204.56

Registro IPv4
host: atsystems.com
class: IN
ttl: 3600
type: A
ip: 3.33.243.145

Servidores DNS Principal (mname) y Secundario (rname)
host: atsystems.com
class: IN
ttl: 3600
type: SOA
mname: ns37.domaincontrol.com
rname: dns.jomax.net
serial: 2023033116
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 600