Registro DMARC
v=DMARC1; p=reject; pct=100; rua=mailto:dmarc-yahoo-rua@yahoo-inc.com;

Servidores DNS Principal (mname) y Secundario (rname)
host: citypedia.com
class: IN
ttl: 3600
type: SOA
mname: hidden-master.yahoo.com
rname: hostmaster.yahoo-inc.com
serial: 2026080501
refresh: 86400
retry: 900
expire: 2592000
minimum-ttl: 300

Información TXT
host: citypedia.com
class: IN
ttl: 3600
type: TXT
txt: f72nm9wxf54bvlmq8y15dz59tl1g4fb7
entries: Array