Registro DMARC
v=DMARC1; p=none; rua=mailto:dmarc@dctsi.com;

Registro IPv4
host: dctsi.net
class: IN
ttl: 7199
type: A
ip: 208.91.197.27

Servidores DNS Principal (mname) y Secundario (rname)
host: dctsi.net
class: IN
ttl: 1800
type: SOA
mname: NS91.WORLDNIC.COM
rname: namehost.WORLDNIC.COM
serial: 124031417
refresh: 10800
retry: 3600
expire: 604800
minimum-ttl: 3600