Registro DMARC
v=DMARC1; p=reject; sp=reject; fo=1; rua=mailto:re+lhqmqj57zra@DMARC.postmarkapp.com,mailto:re+xu5r3a1wrlo@inbound.dmarcdigests.com,mailto:dmarcreports@duolingo.com; ruf=mailto:dmarcreports@duolingo.com; adkim=r; aspf=r

Registro IPv4
host: duolingo.com
class: IN
ttl: 90
type: A
ip: 54.165.40.136

Servidores DNS Principal (mname) y Secundario (rname)
host: duolingo.com
class: IN
ttl: 900
type: SOA
mname: ns-1020.awsdns-63.net
rname: awsdns-hostmaster.amazon.com
serial: 1
refresh: 7200
retry: 900
expire: 1209600
minimum-ttl: 86400

Servidor de Correo
host: duolingo.com
class: IN
ttl: 300
type: MX
pri: 30
target: aspmx3.googlemail.com

Servidor de Correo
host: duolingo.com
class: IN
ttl: 300
type: MX
pri: 30
target: aspmx2.googlemail.com

Servidor de Correo
host: duolingo.com
class: IN
ttl: 300
type: MX
pri: 30
target: aspmx5.googlemail.com

Servidor de Correo
host: duolingo.com
class: IN
ttl: 300
type: MX
pri: 20
target: alt1.aspmx.l.google.com

Servidor de Correo
host: duolingo.com
class: IN
ttl: 300
type: MX
pri: 20
target: alt2.aspmx.l.google.com

Servidor de Correo
host: duolingo.com
class: IN
ttl: 300
type: MX
pri: 30
target: aspmx4.googlemail.com

Servidor de Correo
host: duolingo.com
class: IN
ttl: 300
type: MX
pri: 10
target: aspmx.l.google.com

Información TXT
host: duolingo.com
class: IN
ttl: 3600
type: TXT
txt: e622flctk14s3cs3ccdauh8uth
entries: Array

Información TXT
host: duolingo.com
class: IN
ttl: 3600
type: TXT
txt: h1-domain-verification=sjPBeaGqQwEe8YhJ3W8JVNJa7WDQFAzc6AHkURoErkh324Yy
entries: Array

Información TXT
host: duolingo.com
class: IN
ttl: 3600
type: TXT
txt: atlassian-sending-domain-verification=423a5faf-1cfa-4704-a38a-f7adae302dd6
entries: Array

Información TXT
host: duolingo.com
class: IN
ttl: 3600
type: TXT
txt: pardot_208162_*=610bfb45f202232a79db94c298b30d14332a62a6894e695b025fa7949d7b03fa
entries: Array

Información TXT
host: duolingo.com
class: IN
ttl: 3600
type: TXT
txt: docker-verification=b4ead4c5-fd66-42a5-a684-8f2e7f4c1417
entries: Array

Información TXT
host: duolingo.com
class: IN
ttl: 3600
type: TXT
txt: v=spf1 ip4:100.25.59.11 ip4:205.201.128.0/20 ip4:198.2.128.0/18 ip4:148.105.8.0/21 ip4:52.73.203.75 ip4:52.70.130.33 include:amazonses.com include:_spf.google.com include:_spf.salesforce.com include:mail.zendesk.com include:aspmx.pardot.com ~all
entries: Array

Información TXT
host: duolingo.com
class: IN
ttl: 3600
type: TXT
txt: google-site-verification=SOSFmwK3fijpuLvPw0U5eeBgeFB3mW6WuW3nrGJNUyE
entries: Array

Información TXT
host: duolingo.com
class: IN
ttl: 3600
type: TXT
txt: aliyun-site-verification=1acfc148-50be-45c8-a021-3c933fc8eff9
entries: Array

Información TXT
host: duolingo.com
class: IN
ttl: 3600
type: TXT
txt: apple-domain-verification=bMPI889zOgALUenN
entries: Array

Información TXT
host: duolingo.com
class: IN
ttl: 3600
type: TXT
txt: amazonses:+SIz2NZPqYri3C+PSIyKShZIbuI4rNpbLlES7lmvpu4=
entries: Array

Información TXT
host: duolingo.com
class: IN
ttl: 3600
type: TXT
txt: pardot_208162_*=c15d5cb1b9f31e26058e1f30bda9e5d65c57cfeea37b34af8e1dd88474460e90
entries: Array

Información TXT
host: duolingo.com
class: IN
ttl: 3600
type: TXT
txt: klaviyo-site-verification=RKdcF3
entries: Array

Información TXT
host: duolingo.com
class: IN
ttl: 3600
type: TXT
txt: MS=ms66530579
entries: Array