Registro DMARC
v=DMARC1; p=reject; fo=1; ri=3600; rua=mailto:dmarc_rua@emaildefense.proofpoint.com; ruf=mailto:dmarc_ruf@emaildefense.proofpoint.com

Registro IPv4
host: netexchangeservices.com
class: IN
ttl: 300
type: A
ip: 208.67.220.220

Registro IPv4
host: netexchangeservices.com
class: IN
ttl: 300
type: A
ip: 208.67.222.222

Servidores DNS Principal (mname) y Secundario (rname)
host: netexchangeservices.com
class: IN
ttl: 3600
type: SOA
mname: seth.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2303416095
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 3600

Información TXT
host: netexchangeservices.com
class: IN
ttl: 300
type: TXT
txt: v=spf1 -all
entries: Array