cstu.net - robtex.com

cstu.net

DNSSEC⚠️ Not signed
A13.248.243.5🇺🇸 Amazon13.248.240.0/20
PTRa16e665f42988324c.awsglobalaccelerator.com
A76.223.105.230🇺🇸 Amazon76.223.96.0/20
NSns21.domaincontrol.com ⭐
A2603:5:2141::b🇺🇸 GODADDY-DNS2603:5:2140::/44
PTRns21.domaincontrol.com
A97.74.100.11🇺🇸 GODADDY-DNS97.74.100.0/23
PTRns21.domaincontrol.com
NSns22.domaincontrol.com
A2603:5:2241::b🇺🇸 GODADDY-DNS2603:5:2240::/44
PTRns22.domaincontrol.com
A173.201.68.11🇺🇸 GODADDY-DNS173.201.68.0/23
PTRns22.domaincontrol.com
MXcstu-net.mail.protection.outlook.com ⭐
A2a01:111:f403:c902::🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-sj2pr05cu00300.inbound.protection.outlook.com
A2a01:111:f403:c91d::a🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-co1pr21cu00202.inbound.protection.outlook.com
A2a01:111:f403:c92c::2🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-dm2pr04cu00102.inbound.protection.outlook.com
A2a01:111:f403:f908::1🇺🇸 Microsoft2a01:111:f000::/36
PTRmail-bn1pr04cu00101.inbound.protection.outlook.com
A52.101.9.21🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-bl2pr04cu00205.inbound.protection.outlook.com
A52.101.11.9🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-sn1pr02cu00101.inbound.protection.outlook.com
A52.101.11.17🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-sn1pr0501cu00301.inbound.protection.outlook.com
A52.101.40.6🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-cy1pr03cu00106.inbound.protection.outlook.com
TXTv=spf1 include:spf.protection.outlook.com -all
SOAns21.domaincontrol.comdns@jomax.net 2025-07-20 #4

net

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1771291465

Same first word

cstu.ru
cstu.info
cstu.de
cstu.org
cstu.io
cstu.tk
cstu.com
cstu.net

Similar names

usct.de
tcus.net
cust.biz
ucst.de
tscu.org
ucst.ru
csut.com
scut.de
ucst.edu.ps
tsuc.ru
cust.es
stcu.biz
cuts.it
scut.se
utsc.com.tw
ucst.com
utsc.com.hk
cuts.org.nz
utcs.com
ctus.eu
stuc.it
utsc.de
tcus.com
csut.org
tucs.fi
cust.link
ucts.tn.it
tucs.tn
ctus.net
cust.edu.cn
sctu.cn
cust.services
ctsu.com.cn
stcu.money
tcsu.org
stcu.jobs
stcu.org
cust.jp
cuts.jp
ctsu.cn
stuc.com
tucs.com
tucs.de
ustc.cf
cust.fr
tusc.com
ctus.cn
utcs.ru
ucts.net
stuc.ru
cuts.us
ctsu.ca
stuc.uk
stuc.fr
cuts.ru
csut.net
tsuc.org
ctsu.info
stcu.ro
tusc.org
cuts.team
stuc.org.uk
stuc.codes
tcus.co.uk
stcu.de
ctsu.org
utsc.org.uk
stcu.me
tusc.co.uk
ustc.edu.cn
usct.com.tw
scut.eu
scut.cn
stcu.com
cuts.ca
suct.ru
suct.de
sctu.org
sutc.org
cuts.kr
utsc.ru
cust.cz
scut.cz
ustc.run
cuts.org
ucst.net
stcu.kiev.ua
ustc.eu
utsc.net
scut.ru
scut.at
stcu.us
ctsu.pt
cust.de
sctu.info
cust.io
sutc.com

DNS History

18 records (5 active, 13 former)

20162017201820192020202120222023202420252026NSns21.domaincontrol.comns22.domaincontrol.comns01.cashparking.comns05.domaincontrol.comns06.domaincontrol.comns1.bodis.comns2.bodis.comMXcstu-net.mail.protection.outlook.commailstore1.secureserver.netmx76.m2bp.commx76.mb1p.comsmtp.secureserver.netA13.248.243.576.223.105.230184.168.221.96199.59.242.150199.59.243.12050.63.202.40
○NSns01.cashparking.com2015-11-02 → 2015-11-02 · 4 obs
○ 2015-06-08 11:22:56
● 2015-11-02 15:12:38
○ 2016-02-03 12:21:42
○ 2026-03-23 20:28:10
○NSns05.domaincontrol.com2015-06-08 → 2015-06-08 · 3 obs
● 2015-06-08 11:22:56
○ 2015-11-02 15:12:38
○ 2026-03-23 20:28:10
○NSns06.domaincontrol.com2015-06-08 → 2015-06-08 · 3 obs
● 2015-06-08 11:22:56
○ 2015-11-02 15:12:38
○ 2026-03-23 20:28:10
○NSns1.bodis.com2016-02-03 → 2017-03-28 · 5 obs
○ 2015-11-02 15:12:38
● 2016-02-03 12:21:42
● 2017-03-28 12:41:38
○ 2020-02-08 20:51:12
○ 2026-03-23 20:28:10
○NSns2.bodis.com2016-02-03 → 2017-03-28 · 5 obs
○ 2015-11-02 15:12:38
● 2016-02-03 12:21:42
● 2017-03-28 12:41:38
○ 2020-02-08 20:51:12
○ 2026-03-23 20:28:10
●NSns21.domaincontrol.com2026-03-11 → 2026-03-23 · 3 obs
○ 2020-02-08 20:51:12
● 2026-03-11 20:58:34
● 2026-03-23 20:28:10
●NSns22.domaincontrol.com2026-03-11 → 2026-03-23 · 3 obs
○ 2020-02-08 20:51:12
● 2026-03-11 20:58:34
● 2026-03-23 20:28:10
●MXcstu-net.mail.protection.outlook.com2026-03-11 → 2026-03-23 · 3 obs
○ 2020-02-08 20:51:12
● 2026-03-11 20:58:34
● 2026-03-23 20:28:10
○MXmailstore1.secureserver.net2015-06-08 → 2015-11-02 · 4 obs
● 2015-06-08 11:22:56
● 2015-11-02 15:12:38
○ 2016-02-03 12:21:42
○ 2026-03-23 20:28:10
○MXmx76.m2bp.com2017-03-28 → 2017-03-28 · 4 obs
○ 2016-02-03 12:21:42
● 2017-03-28 12:41:38
○ 2020-02-08 20:51:12
○ 2026-03-23 20:28:10
○MXmx76.mb1p.com2017-03-28 → 2017-03-28 · 4 obs
○ 2016-02-03 12:21:42
● 2017-03-28 12:41:38
○ 2020-02-08 20:51:12
○ 2026-03-23 20:28:10
○MXsmtp.secureserver.net2015-06-08 → 2015-11-02 · 4 obs
● 2015-06-08 11:22:56
● 2015-11-02 15:12:38
○ 2016-02-03 12:21:42
○ 2026-03-23 20:28:10
●A13.248.243.52026-03-11 → 2026-03-23 · 3 obs
○ 2020-02-08 20:51:12
● 2026-03-11 20:58:34
● 2026-03-23 20:28:10
○A184.168.221.962015-11-02 → 2015-11-02 · 4 obs
○ 2015-06-08 11:22:56
● 2015-11-02 15:12:38
○ 2016-02-03 12:21:42
○ 2026-03-23 20:28:10
○A199.59.242.1502017-03-28 → 2017-03-28 · 4 obs
○ 2016-06-21 00:22:44
● 2017-03-28 12:41:38
○ 2020-02-08 20:51:12
○ 2026-03-23 20:28:10
○A199.59.243.1202016-02-03 → 2016-06-21 · 5 obs
○ 2015-11-02 15:12:38
● 2016-02-03 12:21:42
● 2016-06-21 00:22:44
○ 2017-03-28 12:41:38
○ 2026-03-23 20:28:10
○A50.63.202.402015-06-08 → 2015-06-08 · 3 obs
● 2015-06-08 11:22:56
○ 2015-11-02 15:12:38
○ 2026-03-23 20:28:10
●A76.223.105.2302026-03-11 → 2026-03-23 · 3 obs
○ 2020-02-08 20:51:12
● 2026-03-11 20:58:34
● 2026-03-23 20:28:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
neta.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
cstu.netns21.domaincontrol.com, ns22.domaincontrol.com-

✅ Authoritative Response

Server:173.201.68.11

NS records: ns21.domaincontrol.com, ns22.domaincontrol.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cstu.net (unsigned zone)

⏱️ Timing

Total: 455ms | Queries: -

📄 Records

TypeCountSample Data
A276.223.105.230, 13.248.243.5
NS2ns21.domaincontrol.com, ns22.domaincontrol.com
MX1cstu-net.mail.protection.outlook.com (pr
TXT1v=spf1 include:spf.protection.outlook.co
SOA1ns21.domaincontrol.com dns.jomax.net

Analysis

IP Addresses

cstu.net points to two IP numbers: 13.248.243.5 and 76.223.105.230.

Other host names such as skyyview.com, acadianachp.com, abundantworldtravel.com, golfhiltonhead.com and premym.com share IP numbers with cstu.net.

Name Servers

cstu.net is delegated to two name servers: ns21.domaincontrol.com and ns22.domaincontrol.com.

cstu.net uses the same name server setup as other domains, including radicalelt.com, partholan.com, thewarmgunns.com, teameh.com and industee.com.

Host names with two IP numbers:

ns21.domaincontrol.com points to 2603:5:2141::b and 97.74.100.11.

ns22.domaincontrol.com points to 2603:5:2241::b and 173.201.68.11.

Mail Servers

The mail server for cstu.net is cstu-net.mail.protection.outlook.com.

cstu-net.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c902::, 2a01:111:f403:c91d::a, 2a01:111:f403:c92c::2, 2a01:111:f403:f908::1, 52.101.9.21, 52.101.11.9, 52.101.11.17 and 52.101.40.6.