`ctsei.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:3d5f^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:d096^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.61.95^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.208.150^{🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`leah.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a81^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c081^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`leah.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2081^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`leah.ns.cloudflare.com`
		A	108.162.192.129^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
		A	172.64.32.129^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
		A	173.245.58.129^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leah.ns.cloudflare.com`
NS	`mike.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c3f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mike.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c33f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`mike.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:233f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`mike.ns.cloudflare.com`
		A	108.162.195.63^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mike.ns.cloudflare.com`
		A	162.159.44.63^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mike.ns.cloudflare.com`
		A	172.64.35.63^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`mike.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.61.95, 172.67.208.150
		IPv6 hints	2606:4700:3033::6815:3d5f, 2606:4700:3035::ac43:d096
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=198, name=cloudflare-ech.com
SOA	`leah.ns.cloudflare.com`dns@cloudflare.com serial=2408762969

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1784597777

Subdomains

www.ctsei.com

Same first word

ctsei.com

Similar names

csiet.org

ciste.cn

csite.jp

escit.com.au

cetsi.com

tseci.cn

iestc.org

sitec.cl

etics.us

cseit.net

ecsit.eu

setic.eu

setic.com.ar

itsec.md

itsec.lt

itsec.gov.cn

sitec.ru

sceti.com

icest.mx

cites.org.cn

etics.cloud

ciste.ch

cetis.nl

secit.me

itsce.net

itsec.com.cy

isetc.com

cseit.de

istec.com.au

secit.ch

ectis.ru

cites.ca

istec.net.ua

scite.com.ar

itecs.de

icest.org

cites.info.pl

iscte.pt

ecsti.com

ciset.net

sitec.com.ar

cetis.se

tecsi.net

itsec.com

etics.in

secit.se

itecs.ru

cetis.co.uk

csite.eu

itsec.ir

cites.tv

cetis.cloud

iscte.com

itecs.co.jp

cetis.hr

iscte.org

cetis.de

cseti.ru

secti.fr

cetsi.eu

itsec.io

cseti.de

cseit.com

tseci.com

istec.nl

esitc.cn

itsec.dk

sitec.net

itsec.ca

secit.eu

tisec.ca

cstei.com

csite.com.mx

tiecs.ie

tecis.de

itsec.cl

ciste.net

sitec.no

sitec.com

cetis.ch

itesc.org.br

escit.mobi

itecs.nl

itsec.cash

setic.fr

stcie.com

cites.co.uk

istec.com.uy

tecis.in

sitec.com.ua

cites.org

itsec.academy

sicet.com

itsec.solutions

siect.fr

itsec.net

ceits.co.uk

secit.de

ecsit.ir

sicte.com

DNS History

24 records (6 active, 18 former)

○NSfreedns1.registrar-servers.com2015-12-15 → 2016-03-15 · 4 obs

● 2015-12-15 19:15:02
● 2016-03-15 00:49:16
○ 2017-04-04 20:58:32
○ 2026-07-21 01:39:42

○NSfreedns2.registrar-servers.com2015-12-15 → 2016-03-15 · 4 obs

● 2015-12-15 19:15:02
● 2016-03-15 00:49:16
○ 2017-04-04 20:58:32
○ 2026-07-21 01:39:42

○NSfreedns3.registrar-servers.com2015-12-15 → 2016-03-15 · 4 obs

● 2015-12-15 19:15:02
● 2016-03-15 00:49:16
○ 2017-04-04 20:58:32
○ 2026-07-21 01:39:42

○NSfreedns4.registrar-servers.com2015-12-15 → 2016-03-15 · 4 obs

● 2015-12-15 19:15:02
● 2016-03-15 00:49:16
○ 2017-04-04 20:58:32
○ 2026-07-21 01:39:42

○NSfreedns5.registrar-servers.com2015-12-15 → 2016-03-15 · 4 obs

● 2015-12-15 19:15:02
● 2016-03-15 00:49:16
○ 2017-04-04 20:58:32
○ 2026-07-21 01:39:42

●NSleah.ns.cloudflare.com2026-03-29 → 2026-07-21 · 3 obs

○ 2020-04-01 08:57:44
● 2026-03-29 07:12:00
● 2026-07-21 01:39:42

●NSmike.ns.cloudflare.com2026-03-29 → 2026-07-21 · 3 obs

○ 2020-04-01 08:57:44
● 2026-03-29 07:12:00
● 2026-07-21 01:39:42

○NSns1.bdydns.cn2017-04-04 → 2020-04-01 · 5 obs

○ 2016-03-15 00:49:16
● 2017-04-04 20:58:32
● 2020-04-01 08:57:44
○ 2026-03-29 07:12:00
○ 2026-07-21 01:39:42

○NSns2.bdydns.cn2017-04-04 → 2020-04-01 · 5 obs

○ 2016-03-15 00:49:16
● 2017-04-04 20:58:32
● 2020-04-01 08:57:44
○ 2026-03-29 07:12:00
○ 2026-07-21 01:39:42

○MXmail.skrimple.com2015-08-07 → 2016-08-09 · 6 obs

● 2015-08-07 23:11:56
○ 2015-12-15 19:15:02
○ 2016-03-15 00:49:16
● 2016-08-09 04:21:04
○ 2017-04-04 20:58:32
○ 2026-07-21 01:39:42

○MXmx.ym.163.com2017-04-04 → 2020-04-01 · 5 obs

○ 2016-08-09 04:21:04
● 2017-04-04 20:58:32
● 2020-04-01 08:57:44
○ 2026-03-29 07:12:00
○ 2026-07-21 01:39:42

●A104.21.61.952026-03-29 → 2026-07-21 · 5 obs

○ 2017-04-04 20:58:32
● 2026-03-29 07:12:00
● 2026-05-21 14:37:02
○ 2026-05-28 06:37:54
● 2026-07-21 01:39:42

●A172.67.208.1502026-03-29 → 2026-07-21 · 5 obs

○ 2017-04-04 20:58:32
● 2026-03-29 07:12:00
● 2026-05-21 14:37:02
○ 2026-05-28 06:37:54
● 2026-07-21 01:39:42

○A188.114.96.02026-05-28 → 2026-05-28 · 3 obs

○ 2026-05-21 14:37:02
● 2026-05-28 06:37:54
○ 2026-07-21 01:39:42

○A188.114.97.02026-05-28 → 2026-05-28 · 3 obs

○ 2026-05-21 14:37:02
● 2026-05-28 06:37:54
○ 2026-07-21 01:39:42

○A2606:4700:3032::ac43:d0962026-03-29 → 2026-05-21 · 5 obs

○ 2017-04-04 20:58:32
● 2026-03-29 07:12:00
● 2026-05-21 14:37:02
○ 2026-05-28 06:37:54
○ 2026-07-21 01:39:42

●A2606:4700:3033::6815:3d5f2026-07-21 → 2026-07-21 · 2 obs

○ 2026-05-28 06:37:54
● 2026-07-21 01:39:42

○A2606:4700:3035::6815:3d5f2026-03-29 → 2026-05-21 · 5 obs

○ 2017-04-04 20:58:32
● 2026-03-29 07:12:00
● 2026-05-21 14:37:02
○ 2026-05-28 06:37:54
○ 2026-07-21 01:39:42

●A2606:4700:3035::ac43:d0962026-07-21 → 2026-07-21 · 2 obs

○ 2026-05-28 06:37:54
● 2026-07-21 01:39:42

○A2a06:98c1:3120::2026-05-28 → 2026-05-28 · 3 obs

○ 2026-05-21 14:37:02
● 2026-05-28 06:37:54
○ 2026-07-21 01:39:42

○A2a06:98c1:3121::2026-05-28 → 2026-05-28 · 3 obs

○ 2026-05-21 14:37:02
● 2026-05-28 06:37:54
○ 2026-07-21 01:39:42

○A63.141.244.662015-12-15 → 2016-03-15 · 5 obs

○ 2015-08-07 23:11:56
● 2015-12-15 19:15:02
● 2016-03-15 00:49:16
○ 2016-08-09 04:21:04
○ 2026-07-21 01:39:42

○A65.19.157.2312015-08-07 → 2015-08-07 · 3 obs

● 2015-08-07 23:11:56
○ 2015-12-15 19:15:02
○ 2026-07-21 01:39:42

○A69.46.84.502016-08-09 → 2016-08-09 · 4 obs

○ 2016-03-15 00:49:16
● 2016-08-09 04:21:04
○ 2017-04-04 20:58:32
○ 2026-07-21 01:39:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	c.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net, b.gtld-servers.net...	-
ctsei.com	leah.ns.cloudflare.com, mike.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.195.63

NS records: leah.ns.cloudflare.com, mike.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for ctsei.com (unsigned zone)

⏱️ Timing

Total: 668ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.61.95, 172.67.208.150`
AAAA	2	`2606:4700:3035::ac43:d096, 2606:4700:3033::6815:3d5f`
NS	2	`leah.ns.cloudflare.com, mike.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`leah.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (leah.ns.cloudflare.com, leah.ns.cloudflare.com, leah.ns.cloudflare.com...)

Analysis

Hierarchy

www.ctsei.com is delegated beneath ctsei.com.

IP Addresses

ctsei.com directs to four IP numbers, which are 104.21.61.95, 172.67.208.150, 2606:4700:3033::6815:3d5f and 2606:4700:3035::ac43:d096.

rewind.lol, 79qbet.net, lumon.am and two other host names share IP numbers with ctsei.com.

Name Servers

Two name servers handle the delegation for ctsei.com: leah.ns.cloudflare.com and mike.ns.cloudflare.com.

ctsei.com uses the same name servers as several other domains — among them tgxsw.com, teenfreestuff.com, 7904.com and two more.

There is at least partial name server overlap between ctsei.com and other domains — oraclecode.com, gstarikov.com, apimail.me and two more among them.

These name servers frequently co-occur with the name servers treasure.ns.cloudflare.com and laura.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

leah.ns.cloudflare.com resolves to 108.162.192.129, 172.64.32.129 and 173.245.58.129 among others, with 3 other IP addresses in total.

mike.ns.cloudflare.com resolves to 108.162.195.63, 162.159.44.63 and 172.64.35.63 among others, with 3 other IP addresses in total.

ctsei.com - robtex.com

ctsei.com

com

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

`ctsei.com`

`com`