Registro DMARC
v=DMARC1; p=reject; rua=mailto:ai1u2b9l@ag.us.dmarcian.com; ruf=mailto:ai1u2b9l@fr.us.dmarcian.com;

Registro IPv4
host: headfirstcompanies.com
class: IN
ttl: 7200
type: A
ip: 208.91.197.27

Servidores DNS Principal (mname) y Secundario (rname)
host: headfirstcompanies.com
class: IN
ttl: 7200
type: SOA
mname: NS79.WORLDNIC.com
rname: namehost.WORLDNIC.com
serial: 125050207
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600

Información TXT
host: headfirstcompanies.com
class: IN
ttl: 900
type: TXT
txt: v=spf1 -all
entries: Array

Información TXT
host: headfirstcompanies.com
class: IN
ttl: 900
type: TXT
txt: MS=ms43286896
entries: Array