`cengcu.cn`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:4cc5^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3031::ac43:c82d^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.76.197^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.200.45^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`clarissa.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:267b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clarissa.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c27b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`clarissa.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:227b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`clarissa.ns.cloudflare.com`
		A	108.162.194.123^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clarissa.ns.cloudflare.com`
		A	162.159.38.123^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clarissa.ns.cloudflare.com`
		A	172.64.34.123^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clarissa.ns.cloudflare.com`
NS	`jarred.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c7e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jarred.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c37e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jarred.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:237e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jarred.ns.cloudflare.com`
		A	108.162.195.126^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jarred.ns.cloudflare.com`
		A	162.159.44.126^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jarred.ns.cloudflare.com`
		A	172.64.35.126^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jarred.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.76.197, 172.67.200.45
		IPv6 hints	2606:4700:3030::6815:4cc5, 2606:4700:3031::ac43:c82d
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=109, name=cloudflare-ech.com
SOA	`clarissa.ns.cloudflare.com`dns@cloudflare.com serial=2406691362

`cn`

	DNSSEC	⚠️ Not signed
	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=2035029536

Same first word

cengcu.cn

DNS History

17 records (6 active, 11 former)

●NSclarissa.ns.cloudflare.com2026-02-15 → 2026-07-11 · 3 obs

○ 2015-10-14 19:53:20
● 2026-02-15 01:11:12
● 2026-07-11 17:01:26

○NSf1g1ns1.dnspod.net2015-05-21 → 2015-10-14 · 4 obs

● 2015-05-21 10:36:12
● 2015-10-14 19:53:20
○ 2026-02-15 01:11:12
○ 2026-07-11 17:01:26

○NSf1g1ns2.dnspod.net2015-05-21 → 2015-10-14 · 4 obs

● 2015-05-21 10:36:12
● 2015-10-14 19:53:20
○ 2026-02-15 01:11:12
○ 2026-07-11 17:01:26

●NSjarred.ns.cloudflare.com2026-02-15 → 2026-07-11 · 3 obs

○ 2015-10-14 19:53:20
● 2026-02-15 01:11:12
● 2026-07-11 17:01:26

○MXmail.skrimple.com2015-12-25 → 2026-02-15 · 4 obs

● 2015-12-25 09:35:00
● 2026-02-15 22:33:40
○ 2026-02-17 21:06:50
○ 2026-07-11 17:01:26

○A103.51.144.812016-08-11 → 2016-08-11 · 4 obs

○ 2016-03-29 10:41:30
● 2016-08-11 01:43:36
○ 2017-03-28 05:02:22
○ 2026-07-11 17:01:26

●A104.21.76.1972026-02-15 → 2026-07-11 · 6 obs

○ 2017-03-28 05:02:22
● 2026-02-15 01:11:12
● 2026-03-21 19:30:46
○ 2026-03-21 21:05:54
● 2026-04-02 03:03:40
● 2026-07-11 17:01:26

○A123.254.111.1902015-05-21 → 2015-10-14 · 4 obs

● 2015-05-21 10:36:12
● 2015-10-14 19:53:20
○ 2015-12-25 09:35:00
○ 2026-07-11 17:01:26

○A172.64.80.12026-03-21 → 2026-03-21 · 4 obs

○ 2026-03-21 19:30:46
● 2026-03-21 21:05:54
○ 2026-04-02 03:03:40
○ 2026-07-11 17:01:26

●A172.67.200.452026-02-15 → 2026-07-11 · 6 obs

○ 2017-03-28 05:02:22
● 2026-02-15 01:11:12
● 2026-03-21 19:30:46
○ 2026-03-21 21:05:54
● 2026-04-02 03:03:40
● 2026-07-11 17:01:26

○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-03 → 2026-03-21 · 10 obs

○ 2026-02-22 11:03:28
● 2026-03-03 12:02:02
○ 2026-03-10 21:03:54
○ 2026-03-10 22:20:00
● 2026-03-10 22:56:00
○ 2026-03-13 07:12:58
○ 2026-03-21 19:30:46
● 2026-03-21 21:05:54
○ 2026-04-02 03:03:40
○ 2026-07-11 17:01:26

●A2606:4700:3030::6815:4cc52026-07-11 → 2026-07-11 · 3 obs

○ 2026-06-10 03:09:02
● 2026-07-11 17:01:24
● 2026-07-11 17:01:26

●A2606:4700:3031::ac43:c82d2026-07-11 → 2026-07-11 · 3 obs

○ 2026-06-10 03:09:02
● 2026-07-11 17:01:24
● 2026-07-11 17:01:26

○A2606:4700:3032::6815:4cc52026-02-15 → 2026-06-10 · 14 obs

○ 2017-03-28 05:02:22
● 2026-02-15 01:11:12
● 2026-02-22 11:03:28
○ 2026-03-03 12:02:02
● 2026-03-10 21:03:54
● 2026-03-10 22:20:00
○ 2026-03-10 22:56:00
● 2026-03-13 07:12:58
● 2026-03-21 19:30:46
○ 2026-03-21 21:05:54
● 2026-04-02 03:03:40
● 2026-06-10 03:09:02
○ 2026-07-11 17:01:24
○ 2026-07-11 17:01:26

○A2606:4700:3032::ac43:c82d2026-02-15 → 2026-06-10 · 14 obs

○A50.117.113.2222017-03-28 → 2017-03-28 · 4 obs

○ 2016-08-11 01:43:36
● 2017-03-28 05:02:22
○ 2026-02-15 01:11:12
○ 2026-07-11 17:01:26

○A65.19.157.2352015-12-25 → 2016-03-29 · 5 obs

○ 2015-10-14 19:53:20
● 2015-12-25 09:35:00
● 2016-03-29 10:41:30
○ 2016-08-11 01:43:36
○ 2026-07-11 17:01:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	e.dns.cn, a.dns.cn, c.dns.cn, d.dns.cn...	-
cengcu.cn	jarred.ns.cloudflare.com, clarissa.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.194.123

NS records: jarred.ns.cloudflare.com, clarissa.ns.cloudflare.com

🔒 DNSSEC Status

❌ Bogus (DNSSEC validation failed)

Validation error at cengcu.cn: Error: DNS query timeout: 203.119.29.1 for DS cengcu.cn

⏱️ Timing

Total: 3615ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.76.197, 172.67.200.45`
AAAA	2	`2606:4700:3031::ac43:c82d, 2606:4700:3030::6815:4cc5`
NS	2	`clarissa.ns.cloudflare.com, jarred.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`clarissa.ns.cloudflare.com dns.cloudflar`

Analysis

IP Addresses

cengcu.cn has four IP addresses: 104.21.76.197, 172.67.200.45, 2606:4700:3030::6815:4cc5 and 2606:4700:3031::ac43:c82d.

Two other host names, along with dhaka-bangladesh.com, lakeviewsresort.com and mac7oscloud.com, also share IP numbers with cengcu.cn.

Name Servers

cengcu.cn is served by two delegated name servers, clarissa.ns.cloudflare.com and jarred.ns.cloudflare.com.

cengcu.cn shares its NS records with other domains, for example quagmire.cn, dozenth.cn, hzycbs.cn and two others.

cengcu.cn has at least partial name server overlap with other domains, such as kelola.biz, betterrehabrecoverycenter.com, smoke-up-japan.com and two others.

The name servers lindsey.ns.cloudflare.com, linda.ns.cloudflare.com, jay.ns.cloudflare.com and two others are commonly seen in use alongside these name servers.

DNS names with 6 IP addresses:

clarissa.ns.cloudflare.com carries IP addresses 108.162.194.123, 162.159.38.123 and 172.64.34.123, with 3 other addresses beyond those.

jarred.ns.cloudflare.com carries IP addresses 108.162.195.126, 162.159.44.126 and 172.64.35.126, with 3 other addresses beyond those.

cengcu.cn - robtex.com

cengcu.cn

cn