Registro DMARC
v=DMARC1; p=quarantine; aspf=s; rua=mailto:dmarc@rrchnm.org

Registro IPv4
host: teachinghistory.org
class: IN
ttl: 1932
type: A
ip: 129.174.134.63

Registro IPv4
host: teachinghistory.org
class: IN
ttl: 1932
type: A
ip: 129.174.134.62

Servidores DNS Principal (mname) y Secundario (rname)
host: teachinghistory.org
class: IN
ttl: 3600
type: SOA
mname: ns1.rrchnm.org
rname: syschnm.gmu.edu
serial: 2026052943
refresh: 86400
retry: 10800
expire: 604800
minimum-ttl: 3600

Información TXT
host: teachinghistory.org
class: IN
ttl: 81718
type: TXT
txt: v=spf1 include:spf.protection.outlook.com ip4:129.174.0.0/16 mx -all
entries: Array

Información TXT
host: teachinghistory.org
class: IN
ttl: 81718
type: TXT
txt: hello teachinghistory.org
entries: Array