`duht.cn`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:8468^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:cd0^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.12.208^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.132.104^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`isabel.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:2668^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isabel.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c268^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`isabel.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2268^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`isabel.ns.cloudflare.com`
		A	108.162.194.104^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isabel.ns.cloudflare.com`
		A	162.159.38.104^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isabel.ns.cloudflare.com`
		A	172.64.34.104^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`isabel.ns.cloudflare.com`
NS	`ivan.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b78^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c178^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ivan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2178^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ivan.ns.cloudflare.com`
		A	108.162.193.120^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
		A	172.64.33.120^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
		A	173.245.59.120^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ivan.ns.cloudflare.com`
TXT	`google-site-verification=dXfVjjq-tc3cy3pVXDOqRlPh5VIAhl09nL1yll7Nu4M`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.12.208, 172.67.132.104
		IPv6 hints	2606:4700:3031::ac43:8468, 2606:4700:3037::6815:cd0
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=85, name=cloudflare-ech.com
SOA	`isabel.ns.cloudflare.com`dns@cloudflare.com serial=2401086694

`cn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2034666820

Same first word

duht.org

duht.net

duht.cn

Similar names

dtuh.cn

thud.in

thud.it

tudh.com

thdu.com

uthd.com

thud.org

htud.de

hdtu.net

thud.eu

hdut.cn

thud.de

thud.direct

hudt.hs.kr

dhut.ch

udth.site

hdut.com

udth.com

hdut.edu.tw

thud.ru

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tuhd.com

duth.com

dthu.edu.vn

dhut.co.uk

thud.co

tdhu.com

thud.com

dtuh.com

dhtu.dk

hdtu.com

thdu.fr

tdhu.info

hutd.com

duth.gr

thud.co.uk

dhut.com

uhtd.com

tduh.com

tdhu.cn

tduh.cn

thud.fr

DNS History

19 records (6 active, 13 former)

○NSdns1.iidns.com2016-06-21 → 2016-06-21 · 3 obs

● 2016-06-21 18:05:16
○ 2017-03-21 03:45:34
○ 2026-04-13 17:16:06

○NSdns2.iidns.com2016-06-21 → 2016-06-21 · 3 obs

● 2016-06-21 18:05:16
○ 2017-03-21 03:45:34
○ 2026-04-13 17:16:06

○NSdns3.iidns.com2016-06-21 → 2016-06-21 · 3 obs

● 2016-06-21 18:05:16
○ 2017-03-21 03:45:34
○ 2026-04-13 17:16:06

○NSdns4.iidns.com2016-06-21 → 2016-06-21 · 3 obs

● 2016-06-21 18:05:16
○ 2017-03-21 03:45:34
○ 2026-04-13 17:16:06

○NSdns5.iidns.com2016-06-21 → 2016-06-21 · 3 obs

● 2016-06-21 18:05:16
○ 2017-03-21 03:45:34
○ 2026-04-13 17:16:06

○NSdns6.iidns.com2016-06-21 → 2016-06-21 · 3 obs

● 2016-06-21 18:05:16
○ 2017-03-21 03:45:34
○ 2026-04-13 17:16:06

●NSisabel.ns.cloudflare.com2026-04-10 → 2026-04-13 · 3 obs

○ 2020-04-06 22:46:22
● 2026-04-10 11:10:04
● 2026-04-13 17:16:06

●NSivan.ns.cloudflare.com2026-04-10 → 2026-04-13 · 3 obs

○ 2020-04-06 22:46:22
● 2026-04-10 11:10:04
● 2026-04-13 17:16:06

○NSjuming.dnsdun.com2020-04-06 → 2020-04-06 · 4 obs

○ 2017-03-21 03:45:34
● 2020-04-06 22:46:22
○ 2026-04-10 11:10:04
○ 2026-04-13 17:16:06

○NSjuming.dnsdun.net2020-04-06 → 2020-04-06 · 4 obs

○ 2017-03-21 03:45:34
● 2020-04-06 22:46:22
○ 2026-04-10 11:10:04
○ 2026-04-13 17:16:06

○NSns1.eedns.com2017-03-21 → 2017-03-21 · 4 obs

○ 2016-06-21 18:05:16
● 2017-03-21 03:45:34
○ 2020-04-06 22:46:22
○ 2026-04-13 17:16:06

○NSns2.eedns.com2017-03-21 → 2017-03-21 · 4 obs

○ 2016-06-21 18:05:16
● 2017-03-21 03:45:34
○ 2020-04-06 22:46:22
○ 2026-04-13 17:16:06

●A104.21.12.2082026-04-10 → 2026-04-13 · 3 obs

○ 2020-04-06 22:46:22
● 2026-04-10 11:10:04
● 2026-04-13 17:16:06

○A123.108.110.782016-06-21 → 2016-06-21 · 3 obs

● 2016-06-21 18:05:16
○ 2017-03-21 03:45:34
○ 2026-04-13 17:16:06

○A154.197.159.452020-04-06 → 2020-04-06 · 4 obs

○ 2017-03-21 03:45:34
● 2020-04-06 22:46:22
○ 2026-04-10 11:10:04
○ 2026-04-13 17:16:06

○A172.247.242.2082017-03-21 → 2017-03-21 · 4 obs

○ 2016-06-21 18:05:16
● 2017-03-21 03:45:34
○ 2020-04-06 22:46:22
○ 2026-04-13 17:16:06

●A172.67.132.1042026-04-10 → 2026-04-13 · 3 obs

○ 2020-04-06 22:46:22
● 2026-04-10 11:10:04
● 2026-04-13 17:16:06

●A2606:4700:3031::ac43:84682026-04-10 → 2026-04-13 · 3 obs

○ 2020-04-06 22:46:22
● 2026-04-10 11:10:04
● 2026-04-13 17:16:06

●A2606:4700:3037::6815:cd02026-04-10 → 2026-04-13 · 3 obs

○ 2020-04-06 22:46:22
● 2026-04-10 11:10:04
● 2026-04-13 17:16:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, e.dns.cn, d.dns.cn, c.dns.cn...	-
duht.cn	ivan.ns.cloudflare.com, isabel.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.38.104

NS records: ivan.ns.cloudflare.com, isabel.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for duht.cn (unsigned zone)

⏱️ Timing

Total: 1067ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.132.104, 104.21.12.208`
AAAA	2	`2606:4700:3031::ac43:8468, 2606:4700:3037::6815:cd0`
NS	2	`isabel.ns.cloudflare.com, ivan.ns.cloudflare.com`
TXT	1	`google-site-verification=dXfVjjq-tc3cy3p`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`isabel.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

duht.cn resolves to four IP numbers: 2606:4700:3031::ac43:8468, 2606:4700:3037::6815:cd0, 104.21.12.208 and 172.67.132.104.

Other host names such as htc-one.gadgethacks.com, keystoneoflafayette.com, ycr.org.uk, czyuanyue.com.cn and www.166zw.org share IPs with duht.cn.

Name Servers

duht.cn is delegated to two name servers: isabel.ns.cloudflare.com and ivan.ns.cloudflare.com.

duht.cn shares the same name server setup as online-casino-norway.com, bucinammor.pro, videoconferencing.co.tz, floridatradeport.com and knvpn.com.

duht.cn at least partially shares name servers with other domains, for instance puzzlestech.com, securecerts.us, jinshuolawfirm.com, 8068558.com and felfoldi.com.

these name servers are often used in conjunction with the name servers bruce.ns.cloudflare.com.

Host names with six IP numbers:

isabel.ns.cloudflare.com points to 2606:4700:50::a29f:2668, 2803:f800:50::6ca2:c268, 2a06:98c1:50::ac40:2268, 108.162.194.104, 162.159.38.104 and 172.64.34.104.

ivan.ns.cloudflare.com points to 2606:4700:58::adf5:3b78, 2803:f800:50::6ca2:c178, 2a06:98c1:50::ac40:2178, 108.162.193.120, 172.64.33.120 and 173.245.59.120.

duht.cn - robtex.com

duht.cn

cn

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`duht.cn`

`cn`