Registro DMARC
v=DMARC1; p=reject; aspf=s;

Registro IPv4
host: ping.fm
class: IN
ttl: 300
type: A
ip: 45.93.100.100

Servidores DNS Principal (mname) y Secundario (rname)
host: ping.fm
class: IN
ttl: 1800
type: SOA
mname: andy.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2341156008
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Información TXT
host: ping.fm
class: IN
ttl: 300
type: TXT
txt: v=spf1 a mx -all
entries: Array