Registro DMARC
Value: v=DMARC1; p=none; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_rua@emaildefense.proofpoint.com; fo=1

Registro IPv4
host: jazzstudiesonline.org
class: IN
ttl: 90
type: A
ip: 162.159.138.64

Registro IPv4
host: jazzstudiesonline.org
class: IN
ttl: 90
type: A
ip: 162.159.128.65

Servidores DNS Principal (mname) y Secundario (rname)
host: jazzstudiesonline.org
class: IN
ttl: 3600
type: SOA
mname: ext-ns1.columbia.edu
rname: hostmaster.columbia.edu
serial: 7233
refresh: 3600
retry: 1800
expire: 2419200
minimum-ttl: 300

Información TXT
host: jazzstudiesonline.org
class: IN
ttl: 3600
type: TXT
txt: _proofpoint-verification=4d3cda0d-0a83-4pcf4-b52a-409974065c1f
entries: Array