Registro DMARC
v=DMARC1; p=none; rua=mailto:dmarc_rua@interactivebrokers.com; ruf=mailto:dmarc_ruf@interactivebrokers.com; fo=1; pct=100; adkim=r; aspf=r

Registro IPv4
host: interactivebrokers.com
class: IN
ttl: 900
type: A
ip: 64.190.196.12

Registro IPv4
host: interactivebrokers.com
class: IN
ttl: 900
type: A
ip: 63.86.206.37

Servidores DNS Principal (mname) y Secundario (rname)
host: interactivebrokers.com
class: IN
ttl: 900
type: SOA
mname: ndns.interactivebrokers.com
rname: admin.interactivebrokers.com
serial: 2025070103
refresh: 43200
retry: 3600
expire: 2419200
minimum-ttl: 900

Servidor de Correo
host: interactivebrokers.com
class: IN
ttl: 3600
type: MX
pri: 30
target: alt2.us.email.fireeyecloud.com

Servidor de Correo
host: interactivebrokers.com
class: IN
ttl: 3600
type: MX
pri: 10
target: primary.us.email.fireeyecloud.com

Servidor de Correo
host: interactivebrokers.com
class: IN
ttl: 3600
type: MX
pri: 40
target: alt3.us.email.fireeyecloud.com

Servidor de Correo
host: interactivebrokers.com
class: IN
ttl: 3600
type: MX
pri: 20
target: alt1.us.email.fireeyecloud.com

Información TXT
host: interactivebrokers.com
class: IN
ttl: 900
type: TXT
txt: v=spf1 mx ip4:202.1.6.61 ip4:206.106.137.7 ip4:63.86.206.17 ip4:64.190.196.83 ip4:64.190.196.84 ip4:192.237.158.85 ip4:23.253.182.234 ip4:188.172.197.238 ip4:188.172.197.239 include:spfext.ibkr.com include:spf.protection.outlook.com include:everbridge.net include:_spf.fireeyecloud.com -all
entries: Array

Información TXT
host: interactivebrokers.com
class: IN
ttl: 900
type: TXT
txt: facebook-domain-verification=ctgtxqblyzevdy546ugunfrycq8qju
entries: Array

host: interactivebrokers.com
class: IN
ttl: 900
type: NAPTR
order: 10
pref: 0
flags: s
services: SIPS+D2T
regex: 
replacement: _sips._tcp.interactivebrokers.com