`crossknowledge.cn`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:8753^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3036::6815:6dd^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.6.221^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.135.83^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`gene.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a9e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gene.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c09e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`gene.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:209e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`gene.ns.cloudflare.com`
		A	108.162.192.158^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gene.ns.cloudflare.com`
		A	172.64.32.158^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gene.ns.cloudflare.com`
		A	173.245.58.158^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`gene.ns.cloudflare.com`
NS	`igor.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b77^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`igor.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c177^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`igor.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2177^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`igor.ns.cloudflare.com`
		A	108.162.193.119^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`igor.ns.cloudflare.com`
		A	172.64.33.119^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`igor.ns.cloudflare.com`
		A	173.245.59.119^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`igor.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.6.221, 172.67.135.83
		IPv6	2606:4700:3033::ac43:8753, 2606:4700:3036::6815:6dd
SOA	`gene.ns.cloudflare.com`dns@cloudflare.com serial=2398766140

`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=2034546407

Same first word

Similar names

knowledgecross.com

DNS History

12 records (6 active, 6 former)

○NSa.dns.gandi.net2015-08-19 → 2017-03-21 · 4 obs

● 2015-08-19 05:00:52
● 2017-03-21 11:27:18
○ 2026-02-16 12:45:16
○ 2026-03-16 18:57:00

○NSb.dns.gandi.net2015-08-19 → 2017-03-21 · 4 obs

● 2015-08-19 05:00:52
● 2017-03-21 11:27:18
○ 2026-02-16 12:45:16
○ 2026-03-16 18:57:00

○NSc.dns.gandi.net2015-08-19 → 2017-03-21 · 4 obs

● 2015-08-19 05:00:52
● 2017-03-21 11:27:18
○ 2026-02-16 12:45:16
○ 2026-03-16 18:57:00

●NSgene.ns.cloudflare.com2026-02-16 → 2026-03-16 · 3 obs

○ 2017-03-21 11:27:18
● 2026-02-16 12:45:16
● 2026-03-16 18:57:00

●NSigor.ns.cloudflare.com2026-02-16 → 2026-03-16 · 3 obs

○ 2017-03-21 11:27:18
● 2026-02-16 12:45:16
● 2026-03-16 18:57:00

○MXfb.mail.gandi.net2015-08-19 → 2026-02-17 · 4 obs

● 2015-08-19 05:00:52
● 2026-02-17 00:54:04
○ 2026-03-06 14:48:30
○ 2026-03-16 18:57:00

○MXspool.mail.gandi.net2015-08-19 → 2026-02-17 · 4 obs

● 2015-08-19 05:00:52
● 2026-02-17 00:54:04
○ 2026-03-06 14:48:30
○ 2026-03-16 18:57:00

●A104.21.6.2212026-02-16 → 2026-03-16 · 3 obs

○ 2017-03-21 11:27:18
● 2026-02-16 12:45:16
● 2026-03-16 18:57:00

●A172.67.135.832026-02-16 → 2026-03-16 · 3 obs

○ 2017-03-21 11:27:18
● 2026-02-16 12:45:16
● 2026-03-16 18:57:00

○A217.70.184.382015-08-19 → 2017-03-21 · 4 obs

● 2015-08-19 05:00:52
● 2017-03-21 11:27:18
○ 2026-02-16 12:45:16
○ 2026-03-16 18:57:00

●A2606:4700:3033::ac43:87532026-02-16 → 2026-03-16 · 3 obs

○ 2017-03-21 11:27:18
● 2026-02-16 12:45:16
● 2026-03-16 18:57:00

●A2606:4700:3036::6815:6dd2026-02-16 → 2026-03-16 · 3 obs

○ 2017-03-21 11:27:18
● 2026-02-16 12:45:16
● 2026-03-16 18:57:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	e.dns.cn, a.dns.cn, c.dns.cn, ns.cernet.net...	11 records
crossknowledge.cn	gene.ns.cloudflare.com, igor.ns.cloudflare.com	-

✅ Authoritative Response

Server: 173.245.58.158

NS records: gene.ns.cloudflare.com, igor.ns.cloudflare.com

🔒 DNSSEC Status

❌ Bogus (DNSSEC validation failed)

Validation error at cn: Error: DNS query timeout: 203.119.29.1 for DNSKEY cn

⏱️ Timing

Total: 3544ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.135.83, 104.21.6.221`
AAAA	2	`2606:4700:3033::ac43:8753, 2606:4700:3036::6815:6dd`
NS	2	`gene.ns.cloudflare.com, igor.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`gene.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 11

In-bailiwick: 10 (e.dns.cn, e.dns.cn, a.dns.cn...)

Out-of-bailiwick: 1 (ns.cernet.net)

Analysis

IP Addresses

crossknowledge.cn maps to four IP numbers: 2606:4700:3033::ac43:8753, 2606:4700:3036::6815:6dd, 104.21.6.221 and 172.67.135.83.

Other host names, for instance nutriworks.fi, www.nutriworks.fi, pos.idealhealthnow.com, helixcapital.biz and brattix.com share IP numbers with crossknowledge.cn.

Name Servers

Two name servers gene.ns.cloudflare.com and igor.ns.cloudflare.com are delegated to crossknowledge.cn.

crossknowledge.cn uses the same name server configuration as other domains, such as lionize.de, 3d-wallpaper-two.com, titlebeltgroup.com, crossknowledge.de and crossknowledge.us.

crossknowledge.cn at least partially shares name servers with other domains such as clairinvion-app.com, 24seventrackclub.com, dotsave.app, georealms.com and thegreatsingaporereplay.sg.

These name servers are commonly used alongside justin.ns.cloudflare.com, clara.ns.cloudflare.com and braden.ns.cloudflare.com.

Host names with six IP numbers: Host name gene.ns.cloudflare.com points to 2606:4700:50::adf5:3a9e, 2803:f800:50::6ca2:c09e, 2a06:98c1:50::ac40:209e, 108.162.192.158, 172.64.32.158 and 173.245.58.158; host name igor.ns.cloudflare.com points to 2606:4700:58::adf5:3b77, 2803:f800:50::6ca2:c177, 2a06:98c1:50::ac40:2177, 108.162.193.119, 172.64.33.119 and 173.245.59.119.

crossknowledge.cn - robtex.com