Registro DMARC
v=DMARC1; p=none; aspf=r; adkim=r;

Registro IPv4
host: courseguide.org
class: IN
ttl: 90
type: A
ip: 35.244.153.44

Registro IPv4
host: courseguide.org
class: IN
ttl: 90
type: A
ip: 35.227.194.51

Registro IPv4
host: courseguide.org
class: IN
ttl: 90
type: A
ip: 34.160.17.71

Registro IPv4
host: courseguide.org
class: IN
ttl: 90
type: A
ip: 34.120.190.48

Servidores DNS Principal (mname) y Secundario (rname)
host: courseguide.org
class: IN
ttl: 86400
type: SOA
mname: ns1.siteground.net
rname: root.usm101.siteground.biz
serial: 2020121758
refresh: 86400
retry: 7200
expire: 3600000
minimum-ttl: 86400

Servidor de Correo
host: courseguide.org
class: IN
ttl: 3600
type: MX
pri: 20
target: mx20.mailspamprotection.com

Servidor de Correo
host: courseguide.org
class: IN
ttl: 3600
type: MX
pri: 10
target: mx10.mailspamprotection.com

Servidor de Correo
host: courseguide.org
class: IN
ttl: 3600
type: MX
pri: 30
target: mx30.mailspamprotection.com

Información TXT
host: courseguide.org
class: IN
ttl: 14400
type: TXT
txt: v=spf1 +a +mx +a:usm101.siteground.biz  include:courseguide.org.spf.auto.dnssmarthost.net ~all
entries: Array