`21cnc.cn`

DNSSEC	⚠️ Not signed
A	2606:4700:3031::ac43:a6c1^{🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:5309^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.83.9^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.166.193^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`aitana.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26de^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aitana.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2de^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`aitana.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22de^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`aitana.ns.cloudflare.com`
		A	108.162.194.222^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aitana.ns.cloudflare.com`
		A	162.159.38.222^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aitana.ns.cloudflare.com`
		A	172.64.34.222^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aitana.ns.cloudflare.com`
NS	`jaime.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c66^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jaime.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c366^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`jaime.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2366^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`jaime.ns.cloudflare.com`
		A	108.162.195.102^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jaime.ns.cloudflare.com`
		A	162.159.44.102^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jaime.ns.cloudflare.com`
		A	172.64.35.102^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`jaime.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.83.9, 172.67.166.193
		IPv6 hints	2606:4700:3031::ac43:a6c1, 2606:4700:3036::6815:5309
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=223, name=cloudflare-ech.com
SOA	`aitana.ns.cloudflare.com`dns@cloudflare.com serial=2401618816

`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=2034698750

Same first word

21cnc.cn

Similar names

ncc21.kr

c21nc.com

cnc12.com

cnc21.com

DNS History

19 records (6 active, 13 former)

●NSaitana.ns.cloudflare.com2026-04-22 → 2026-04-22 · 2 obs

○ 2026-03-26 12:33:04
● 2026-04-22 10:23:26

○NSf1g1ns1.dnspod.net2015-08-29 → 2016-07-27 · 4 obs

● 2015-08-29 07:47:08
● 2016-07-27 22:25:04
○ 2016-12-05 03:02:58
○ 2026-04-22 10:23:26

○NSf1g1ns2.dnspod.net2015-08-29 → 2016-07-27 · 4 obs

● 2015-08-29 07:47:08
● 2016-07-27 22:25:04
○ 2016-12-05 03:02:58
○ 2026-04-22 10:23:26

●NSjaime.ns.cloudflare.com2026-04-22 → 2026-04-22 · 2 obs

○ 2026-03-26 12:33:04
● 2026-04-22 10:23:26

○NSns1.dns.com2016-12-05 → 2016-12-05 · 4 obs

○ 2016-07-27 22:25:04
● 2016-12-05 03:02:58
○ 2018-07-06 19:43:28
○ 2026-04-22 10:23:26

○NSns1.nowcndns.com2026-03-26 → 2026-03-26 · 3 obs

○ 2018-07-06 19:43:28
● 2026-03-26 12:33:04
○ 2026-04-22 10:23:26

○NSns2.dns.com2016-12-05 → 2016-12-05 · 4 obs

○ 2016-07-27 22:25:04
● 2016-12-05 03:02:58
○ 2018-07-06 19:43:28
○ 2026-04-22 10:23:26

○NSns2.nowcndns.com2026-03-26 → 2026-03-26 · 3 obs

○ 2018-07-06 19:43:28
● 2026-03-26 12:33:04
○ 2026-04-22 10:23:26

○NSv1.dns234.net2018-07-06 → 2018-07-06 · 4 obs

○ 2016-12-05 03:02:58
● 2018-07-06 19:43:28
○ 2026-03-26 12:33:04
○ 2026-04-22 10:23:26

○NSv2.dns234.net2018-07-06 → 2018-07-06 · 4 obs

○ 2016-12-05 03:02:58
● 2018-07-06 19:43:28
○ 2026-03-26 12:33:04
○ 2026-04-22 10:23:26

○MXmx.ym.163.com2015-08-29 → 2016-07-27 · 4 obs

● 2015-08-29 07:47:08
● 2016-07-27 22:25:04
○ 2018-07-06 19:43:28
○ 2026-04-22 10:23:26

●A104.21.83.92026-04-22 → 2026-04-22 · 2 obs

○ 2026-03-26 12:33:04
● 2026-04-22 10:23:26

○A166.88.154.842018-07-06 → 2018-07-06 · 4 obs

○ 2016-12-05 03:02:58
● 2018-07-06 19:43:28
○ 2026-03-26 12:33:04
○ 2026-04-22 10:23:26

●A172.67.166.1932026-04-22 → 2026-04-22 · 2 obs

○ 2026-03-26 12:33:04
● 2026-04-22 10:23:26

○A182.61.15.1852016-06-19 → 2016-06-19 · 3 obs

● 2016-06-19 21:04:08
○ 2016-07-27 22:25:04
○ 2026-04-22 10:23:26

●A2606:4700:3031::ac43:a6c12026-04-22 → 2026-04-22 · 2 obs

○ 2026-03-26 12:33:04
● 2026-04-22 10:23:26

●A2606:4700:3036::6815:53092026-04-22 → 2026-04-22 · 2 obs

○ 2026-03-26 12:33:04
● 2026-04-22 10:23:26

○A38.11.131.412026-03-26 → 2026-03-26 · 3 obs

○ 2018-07-06 19:43:28
● 2026-03-26 12:33:04
○ 2026-04-22 10:23:26

○A45.34.120.2202016-12-05 → 2016-12-05 · 4 obs

○ 2016-07-27 22:25:04
● 2016-12-05 03:02:58
○ 2018-07-06 19:43:28
○ 2026-04-22 10:23:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
21cnc.cn	jaime.ns.cloudflare.com, aitana.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.195.102

NS records: jaime.ns.cloudflare.com, aitana.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 21cnc.cn (unsigned zone)

⏱️ Timing

Total: 915ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.83.9, 172.67.166.193`
AAAA	2	`2606:4700:3031::ac43:a6c1, 2606:4700:3036::6815:5309`
NS	2	`aitana.ns.cloudflare.com, jaime.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`aitana.ns.cloudflare.com dns.cloudflare.`

Analysis

IP Addresses

21cnc.cn resolves to four IPs: 2606:4700:3031::ac43:a6c1, 2606:4700:3036::6815:5309, 104.21.83.9 and 172.67.166.193.

Other host names, for instance mariettapizzagrill.com, belmondcap.com, ariseright.com, dublikat.group and oticasgassi.com.br share IP numbers with 21cnc.cn.

Name Servers

21cnc.cn has two name servers: aitana.ns.cloudflare.com and jaime.ns.cloudflare.com.

21cnc.cn shares the same name server setup as other domains, for example volge.cn, k-blog.cn, w009.cn, runmobile.cn and hyhbsz.cn.

21cnc.cn shares some name servers with other domains, for example hp64.com, workcloud.tech, arivontexa.com, datatools.com.co and 741sf.com.

These name servers are commonly used together with dahlia.ns.cloudflare.com and noah.ns.cloudflare.com.

Host names with six IP numbers: aitana.ns.cloudflare.com points to: 2606:4700:50::a29f:26de, 2803:f800:50::6ca2:c2de, 2a06:98c1:50::ac40:22de, 108.162.194.222, 162.159.38.222 and 172.64.34.222; jaime.ns.cloudflare.com points to: 2606:4700:58::a29f:2c66, 2803:f800:50::6ca2:c366, 2a06:98c1:50::ac40:2366, 108.162.195.102, 162.159.44.102 and 172.64.35.102.

21cnc.cn - robtex.com

21cnc.cn

cn

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`21cnc.cn`

`cn`