Registro DMARC
v=DMARC1; p=none; pct=100; rua=mailto:postmaster_dmarc@polytechnique.org, mailto:re+kxhahm9rwbo@dmarc.postmarkapp.com; sp=none; aspf=r;

Registro IPv4
host: polytechnique.org
class: IN
ttl: 3600
type: A
ip: 91.121.62.108

Servidores DNS Principal (mname) y Secundario (rname)
host: polytechnique.org
class: IN
ttl: 1800
type: SOA
mname: ns1.polytechnique.org
rname: contact.polytechnique.org
serial: 2026041101
refresh: 21600
retry: 3600
expire: 3600000
minimum-ttl: 3600

Servidor de Correo
host: polytechnique.org
class: IN
ttl: 3600
type: MX
pri: 5
target: mx3.polytechnique.org

Servidor de Correo
host: polytechnique.org
class: IN
ttl: 3600
type: MX
pri: 0
target: mx2.polytechnique.org

Información TXT
host: polytechnique.org
class: IN
ttl: 3600
type: TXT
txt: v=spf1 include:spf.polytechnique.org include:aspmx.googlemail.com ?all
entries: Array