Registro DMARC
v=spf1 ip4:138.100.8.0/24 ip4:138.100.243.0/24 ip4:138.100.198.0/24 ip4:138.100.4.67 -all

Registro IPv4
host: fi.upm.es
class: IN
ttl: 15759
type: A
ip: 138.100.243.16

Servidores DNS Principal (mname) y Secundario (rname)
host: fi.upm.es
class: IN
ttl: 15759
type: SOA
mname: chita.fi.upm.es
rname: hostmaster.fi.upm.es
serial: 2024112600
refresh: 28800
retry: 7200
expire: 2419200
minimum-ttl: 3600

Servidor de Correo
host: fi.upm.es
class: IN
ttl: 5313
type: MX
pri: 100
target: relay.upm.es

Información TXT
host: fi.upm.es
class: IN
ttl: 15759
type: TXT
txt: v=spf1 ip4:138.100.8.0/24 ip4:138.100.243.0/24 ip4:138.100.4.67 ip4:138.100.198.0/24 -all
entries: Array

Información TXT
host: fi.upm.es
class: IN
ttl: 15759
type: TXT
txt: google-site-verification=rJT2Yatvyyg4HepVHZ-nk6LrxHNNlArZHaNxhkFCSgU
entries: Array