cs21.com - robtex.com

cs21.com

DNSSEC⚠️ Not signed
A119.205.211.105🇰🇷 KT-NET119.200.0.0/13 Korea Telecom, Seoul, Korea
NSns1.namesvr.net ⭐
A112.175.14.100🇰🇷 KT-NET112.168.0.0/13
NSns3.cs21.com ⚠️ Not in zone NS records
A112.175.14.100🇰🇷 KT-NET112.168.0.0/13
NSns4.cs21.com ⚠️ Not in zone NS records
A183.111.144.126🇰🇷 KT-NET183.104.0.0/13 KORNET KOREA TELECOM
MXcs21-com.mail.protection.outlook.com ⭐
A2a01:111:f403:cc09::🇸🇬 Microsoft2a01:111:f000::/36
PTRmail-sg2pr03cu00500.inbound.protection.outlook.com
A2a01:111:f403:cc1a::8🇯🇵 Microsoft2a01:111:f000::/36
PTRmail-tydpr03cu00100.inbound.protection.outlook.com
A2a01:111:f403:cc1f::4🇯🇵 Microsoft2a01:111:f000::/36
PTRmail-os8pr02cu00104.inbound.protection.outlook.com
A52.101.124.117🇯🇵 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-tydpr03cu00105.inbound.protection.outlook.com
A52.101.137.0🇸🇬 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-sg2pr03cu00500.inbound.protection.outlook.com
A52.101.157.80🇺🇸 Microsoft52.96.0.0/12 MICROSOFT
PTRmail-os8pr02cu00100.inbound.protection.outlook.com
TXTv=spf1 include:spf.protection.outlook.com ip4:119.205.211.103 -all
SOAns1.namesvr.netroot@cs21.com 2010-08-06 #18

com

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=1771291435

Up

ns1.cs21.com
ns2.cs21.com
ns3.cs21.com
mail.cs21.com
ns4.cs21.com
ns.cs21.com
www.cs21.com

Same first word

cs21.jp
cs21.de
cs21.com.cn
cs21.it
cs21.kr
cs21.cn
cs21.co.jp
cs21.cz
cs21.com
cs21.xyz
cs21.ru

Similar names

cs12.net
12sc.ca
21cs.co.uk
c21s.co.uk
21sc.cn
2s1c.com
c2s1.cn
sc21.info
cs12.de
2c1s.com
21cs.biz
12sc.net
21cs.tw
cs12.fr
12cs.eu
12cs.de
12sc.com
21sc.com
21cs.com.au
21cs.net
sc21.cn
cs12.cn
21cs.com.cn
12sc.top
1c2s.com
12sc.org
12cs.ru
21cs.cn
sc21.com
s1c2.com
c2s1.com
12sc.tv
cs12.com
21cs.com
1s2c.com
2sc1.com
sc12.cn
s21c.xyz
12cs.org
sc21.ru
21cs.me
1c2s.ca
12sc.cn
sc21.net
12cs.net

DNS History

8 records (5 active, 3 former)

20162017201820192020202120222023202420252026NSns1.namesvr.netns3.cs21.comns4.cs21.comns2.namesvr.netMXcs21-com.mail.protection.outlook.comms85087404.msv1.invalid.outlook.comA119.205.211.105119.205.211.103
●NSns1.namesvr.net2015-07-19 → 2026-02-27 · 2 obs
● 2015-07-19 07:30:38
● 2026-02-27 11:27:06
○NSns2.namesvr.net2015-07-19 → 2016-12-28 · 4 obs
● 2015-07-19 07:30:38
● 2016-12-28 13:31:50
○ 2026-02-26 19:27:26
○ 2026-02-27 11:27:06
●NSns3.cs21.com2026-02-26 → 2026-02-27 · 3 obs
○ 2016-12-28 13:31:50
● 2026-02-26 19:27:26
● 2026-02-27 11:27:06
●NSns4.cs21.com2026-02-26 → 2026-02-27 · 3 obs
○ 2016-12-28 13:31:50
● 2026-02-26 19:27:26
● 2026-02-27 11:27:06
●MXcs21-com.mail.protection.outlook.com2015-07-19 → 2026-02-27 · 2 obs
● 2015-07-19 07:30:38
● 2026-02-27 11:27:06
○MXms85087404.msv1.invalid.outlook.com2015-07-19 → 2015-07-19 · 3 obs
● 2015-07-19 07:30:38
○ 2015-12-01 14:18:14
○ 2026-02-27 11:27:06
○A119.205.211.1032015-07-19 → 2016-12-28 · 4 obs
● 2015-07-19 07:30:38
● 2016-12-28 13:31:50
○ 2026-02-26 19:27:26
○ 2026-02-27 11:27:06
●A119.205.211.1052026-02-26 → 2026-02-27 · 3 obs
○ 2016-12-28 13:31:50
● 2026-02-26 19:27:26
● 2026-02-27 11:27:06

🔍 DNS Trace

AI analysis

cs21.com is a parent of ns1.cs21.com, ns2.cs21.com, ns3.cs21.com, mail.cs21.com and ns4.cs21.com, plus a few other host names.

cs21.com points to a single IP number: 119.205.211.105.

Other host names, for instance www.centumsoft.com, www.cs21.com and centumsoft.com share IP numbers with cs21.com.

The domain cs21.com is delegated to three name servers: ns3.cs21.com, ns4.cs21.com and ns1.namesvr.net.

cs21.com shares name servers with other domains at least partially, for instance nechingu.com, ok-dang.com, compass98.co.kr, teletron.co.kr and mdel.co.kr.

These name servers are often used with ns2.namesvr.net, ns1.oktomato.kr, ns2.oktomato.kr, ns1.inpiad.kr and ns2.inpiad.kr.

Host names with one IP number:

The host name ns3.cs21.com points to 112.175.14.100.

The host name ns4.cs21.com points to 183.111.144.126.

The host name ns1.namesvr.net points to 112.175.14.100.

Host names that point to 112.175.14.100: ns3.cs21.com and ns1.namesvr.net.

The mail server for cs21.com is cs21-com.mail.protection.outlook.com.

The host name cs21-com.mail.protection.outlook.com resolves to six IPs: 2a01:111:f403:cc09::, 2a01:111:f403:cc1a::8, 2a01:111:f403:cc1f::4, 52.101.124.117, 52.101.137.0 and 52.101.157.80.