Registro DMARC
v=DMARC1; p=reject; rua=mailto:naturgy_rua@dmarc.cybersoc.deloitte.es; ruf=mailto:naturgy_ruf@dmarc.cybersoc.deloitte.es; fo=1

Registro IPv4
host: gnsvt.com
class: IN
ttl: 3600
type: A
ip: 54.154.129.99

Servidores DNS Principal (mname) y Secundario (rname)
host: gnsvt.com
class: IN
ttl: 3600
type: SOA
mname: dnsinet01.gasnatural.com
rname: please_set_email.absolutely.nowhere
serial: 26
refresh: 10800
retry: 3600
expire: 1209600
minimum-ttl: 900

Información TXT
host: gnsvt.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 -all
entries: Array