Registro DMARC
v=DMARC1; p=quarantine; rua=mailto:postmaster@cogent.com, mailto:dmarc@cogent.com; pct=100; adkim=s; aspf=s

Registro IPv4
host: Cogent.com
class: IN
ttl: 300
type: A
ip: 31.43.160.6

Registro IPv4
host: Cogent.com
class: IN
ttl: 300
type: A
ip: 31.43.161.6

Servidores DNS Principal (mname) y Secundario (rname)
host: Cogent.com
class: IN
ttl: 1800
type: SOA
mname: damian.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2417966972
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Servidor de Correo
host: Cogent.com
class: IN
ttl: 90
type: MX
pri: 1
target: smtp.google.com

Información TXT
host: Cogent.com
class: IN
ttl: 600
type: TXT
txt: google-site-verification=1EC0T0HPhX5TVPdSd-wRtFbupJohQ-KcS-Em8l_kUso
entries: 

Información TXT
host: Cogent.com
class: IN
ttl: 600
type: TXT
txt: google-site-verification=pele0Z-5fnyjGbOQuvvYxvJ5xX8J-ZBU2LRbuhaMKTM
entries: 

Información TXT
host: Cogent.com
class: IN
ttl: 600
type: TXT
txt: v=spf1 include:_spf.google.com ~all
entries: 

Información TXT
host: Cogent.com
class: IN
ttl: 600
type: TXT
txt: google-gws-recovery-domain-verification=67106797
entries: