Registro DMARC
v=DMARC1; p=reject; sp=reject; aspf=s; pct=100

Registro IPv4
host: guggenheimtraininginstitute.com
class: IN
ttl: 73922
type: A
ip: 15.197.173.102

Servidores DNS Principal (mname) y Secundario (rname)
host: guggenheimtraininginstitute.com
class: IN
ttl: 73923
type: SOA
mname: ns1.markmonitor.com
rname: hostmaster.markmonitor.com
serial: 2026091102
refresh: 86400
retry: 3600
expire: 2592000
minimum-ttl: 172800

Información TXT
host: guggenheimtraininginstitute.com
class: IN
ttl: 73922
type: TXT
txt: v=spf1 -all
entries: Array