curso.app - robtex.com

curso.app

DNSSEC⚠️ Not signed
NSns-1870.awsdns-41.co.uk ⭐
A2600:9000:5307:4e00::1Amazon2600:9000:5307::/48 - CloudFront
A205.251.199.78Amazon205.251.199.0/24 prefix
NSns-1014.awsdns-62.net
A2600:9000:5303:f600::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront
A205.251.195.246🇺🇸 Amazon205.251.195.0/24 prefix
NSns-1374.awsdns-43.org
A2600:9000:5305:5e00::1Amazon2600:9000:5305::/48 - CloudFront
A205.251.197.94Amazon205.251.197.0/24 prefix
NSns-35.awsdns-04.com
A2600:9000:5300:2300::1Amazon2600:9000:5300::/48 - CloudFront
A205.251.192.35Amazon205.251.192.0/24 prefix
MXinbound-smtp.us-east-1.amazonaws.com.curso.app ⭐
A18.244.124.10
A18.244.124.50
A18.244.124.88
A18.244.124.112
SOAns-1870.awsdns-41.co.ukawsdns-hostmaster@amazon.com serial=1

app

DNSSEC🔒 Signed (DS record present)
NSns-tld1.charlestonroadregistry.com ⭐
NSns-tld2.charlestonroadregistry.com
NSns-tld3.charlestonroadregistry.com
NSns-tld4.charlestonroadregistry.com
NSns-tld5.charlestonroadregistry.com
SOAns-tld1.charlestonroadregistry.comcloud-dns-hostmaster@google.com serial=101427
🔒 HSTS Preload (+subdomains)

Subdomains

com.curso.app
mx.curso.app
auth.curso.app

Same first word

curso.dev
curso.es
curso.study
curso.it
curso.email
curso.org.br
curso.pro
curso.one
curso.me
curso.pl
curso.net
curso.app
curso.digital
curso.help
curso.in
curso.tv

Similar names

cours.eu
orcus.nl
oursc.k12.ar.us
cours.in
corsu.com
curos.com
osruc.com
rusco.su
corus.cn
scour.fr
curos.es
uscor.net
sorcu.com
corus.in
surco.tv
orcus.co.nz
rocus.co.jp
scuro.org
scour.com.tr
corus.us
rucso.com
corus.ro
curos.eu
oucrs.com
scour.org
orcus.priv.at
rucos.ch
corus.co
sucor.com
ursoc.com
orcus.cl
rusoc.ru
rusco.org
corus.be
cours.cc
cours.it
corus.net
cuors.com
scuro.nl
corus.co.kr
rocsu.com
orcus.lv
crous.co.za
orcus.sk
ocrus.ru
surco.co.uk
rocus.org
orcus.in
rocus.de
corus.com.br
surco.com.uy
corus.ai
cours.org
corus.biz
orcus.eu
crous.net
cours.bplaced.net
orcus.com
corus.sn
surco.com.my
oursc.com.au
corus.fr
scour.bio
orcus.org
crous.eu
cosur.com.ar
crous.com
sourc.com
cours.cn
cosru.com
ocrus.com
rcous.ru
corus.pro
scuro.eu
ourcs.co.uk
corus.ru
corus.cloud
rucos.de
cruso.in
curos.be
csuro.com
rusoc.com
corsu.org.uk
surco.uk.com
corsu.fr
cours.education
rusco.com.tr
rusco.net

DNS History

5 records (5 active, 0 former)

NSns-1014.awsdns-62.netns-1374.awsdns-43.orgns-1870.awsdns-41.co.ukns-35.awsdns-04.comMXinbound-smtp.us-east-1.amazonaws.com.curso.app
●NSns-1014.awsdns-62.net2026-03-06 → 2026-03-18 · 2 obs
● 2026-03-06 06:10:26
● 2026-03-18 08:56:34
●NSns-1374.awsdns-43.org2026-03-06 → 2026-03-18 · 2 obs
● 2026-03-06 06:10:26
● 2026-03-18 08:56:34
●NSns-1870.awsdns-41.co.uk2026-03-06 → 2026-03-18 · 2 obs
● 2026-03-06 06:10:26
● 2026-03-18 08:56:34
●NSns-35.awsdns-04.com2026-03-06 → 2026-03-18 · 2 obs
● 2026-03-06 06:10:26
● 2026-03-18 08:56:34
●MXinbound-smtp.us-east-1.amazonaws.com.curso.app2026-03-06 → 2026-03-18 · 2 obs
● 2026-03-06 06:10:26
● 2026-03-18 08:56:34

🔍 DNS Trace

Analysis

Hierarchy

The parent of com.curso.app, mx.curso.app and auth.curso.app is curso.app.

Name Servers

curso.app delegates to four name servers: ns-35.awsdns-04.com, ns-1014.awsdns-62.net, ns-1374.awsdns-43.org and ns-1870.awsdns-41.co.uk.

Host names with two IP numbers: ns-35.awsdns-04.com points to 2600:9000:5300:2300::1 and 205.251.192.35; ns-1014.awsdns-62.net points to 2600:9000:5303:f600::1 and 205.251.195.246; ns-1374.awsdns-43.org points to 2600:9000:5305:5e00::1 and 205.251.197.94; ns-1870.awsdns-41.co.uk points to 2600:9000:5307:4e00::1 and 205.251.199.78.

Mail Servers

curso.app is handled by a single mail server, inbound-smtp.us-east-1.amazonaws.com.curso.app.

inbound-smtp.us-east-1.amazonaws.com.curso.app resolves to four IPs: 18.244.124.10, 18.244.124.50, 18.244.124.88 and 18.244.124.112.