cncourse.com - dns.ninja

`cncourse.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3034::ac43:ad28^{🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:1e8f^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.30.143^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.173.40^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`evelyn.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:26d5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`evelyn.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2d5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`evelyn.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22d5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`evelyn.ns.cloudflare.com`
		A	108.162.194.213^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`evelyn.ns.cloudflare.com`
		A	162.159.38.213^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`evelyn.ns.cloudflare.com`
		A	172.64.34.213^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`evelyn.ns.cloudflare.com`
NS	`ryan.ns.cloudflare.com`
		A	2606:4700:58::a29f:2ce5^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ryan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c3e5^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`ryan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:23e5^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`ryan.ns.cloudflare.com`
		A	108.162.195.229^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ryan.ns.cloudflare.com`
		A	162.159.44.229^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ryan.ns.cloudflare.com`
		A	172.64.35.229^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ryan.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.30.143, 172.67.173.40
		IPv6 hints	2606:4700:3034::ac43:ad28, 2606:4700:3037::6815:1e8f
SOA	`evelyn.ns.cloudflare.com`dns@cloudflare.com serial=2410283095

`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=1785903659

Subdomains

www.cncourse.com

Same first word

cncourse.org.cn

cncourse.com

Similar names

DNS History

15 records (6 active, 9 former)

○NSdns1.hep.edu.cn2015-08-16 → 2020-03-13 · 4 obs

● 2015-08-16 09:42:04
● 2020-03-13 10:56:26
○ 2026-02-15 12:52:16
○ 2026-08-05 04:25:08

●NSevelyn.ns.cloudflare.com2026-02-15 → 2026-08-05 · 3 obs

○ 2020-03-13 10:56:26
● 2026-02-15 12:52:16
● 2026-08-05 04:25:08

●NSryan.ns.cloudflare.com2026-02-15 → 2026-08-05 · 3 obs

○ 2020-03-13 10:56:26
● 2026-02-15 12:52:16
● 2026-08-05 04:25:08

○MXmail.cncourse.com2015-08-16 → 2026-02-15 · 4 obs

● 2015-08-16 09:42:04
● 2026-02-15 12:52:16
○ 2026-02-17 15:53:50
○ 2026-08-05 04:25:08

●A104.21.30.1432026-02-15 → 2026-08-05 · 5 obs

● 2026-02-15 12:52:16
● 2026-03-30 05:41:02
○ 2026-04-09 11:54:48
● 2026-04-10 18:05:54
● 2026-08-05 04:25:08

○A172.64.80.12026-02-15 → 2026-08-05 · 2 obs

○ 2026-02-15 12:52:16
○ 2026-08-05 04:25:08

●A172.67.173.402026-02-15 → 2026-08-05 · 5 obs

● 2026-02-15 12:52:16
● 2026-03-30 05:41:02
○ 2026-04-09 11:54:48
● 2026-04-10 18:05:54
● 2026-08-05 04:25:08

○A188.114.96.02026-04-09 → 2026-04-09 · 4 obs

○ 2026-03-30 05:41:02
● 2026-04-09 11:54:48
○ 2026-04-10 18:05:54
○ 2026-08-05 04:25:08

○A188.114.97.02026-04-09 → 2026-04-09 · 4 obs

○ 2026-03-30 05:41:02
● 2026-04-09 11:54:48
○ 2026-04-10 18:05:54
○ 2026-08-05 04:25:08

○A2606:4700:130:436c:6f75:6466:6c61:72652026-02-15 → 2026-08-05 · 2 obs

○ 2026-02-15 12:52:16
○ 2026-08-05 04:25:08

○A2606:4700:3030::ac43:ad282026-02-15 → 2026-04-10 · 6 obs

● 2026-02-15 12:52:16
● 2026-03-30 05:41:02
○ 2026-04-09 11:54:48
● 2026-04-10 18:05:54
○ 2026-07-16 18:54:58
○ 2026-08-05 04:25:08

●A2606:4700:3034::ac43:ad282026-07-16 → 2026-08-05 · 3 obs

○ 2026-04-10 18:05:54
● 2026-07-16 18:54:58
● 2026-08-05 04:25:08

●A2606:4700:3037::6815:1e8f2026-02-15 → 2026-08-05 · 5 obs

● 2026-02-15 12:52:16
● 2026-03-30 05:41:02
○ 2026-04-09 11:54:48
● 2026-04-10 18:05:54
● 2026-08-05 04:25:08

○A2a06:98c1:3120::2026-04-09 → 2026-04-09 · 4 obs

○ 2026-03-30 05:41:02
● 2026-04-09 11:54:48
○ 2026-04-10 18:05:54
○ 2026-08-05 04:25:08

○A2a06:98c1:3121::2026-04-09 → 2026-04-09 · 4 obs

○ 2026-03-30 05:41:02
● 2026-04-09 11:54:48
○ 2026-04-10 18:05:54
○ 2026-08-05 04:25:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
cncourse.com	evelyn.ns.cloudflare.com, ryan.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.194.213

NS records: evelyn.ns.cloudflare.com, ryan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cncourse.com (unsigned zone)

⏱️ Timing

Total: 134ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.173.40, 104.21.30.143`
AAAA	2	`2606:4700:3034::ac43:ad28, 2606:4700:3037::6815:1e8f`
NS	2	`evelyn.ns.cloudflare.com, ryan.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`evelyn.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

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

Analysis

Hierarchy

The domain www.cncourse.com falls under the parent cncourse.com.

IP Addresses

cncourse.com points to the four IP addresses 104.21.30.143, 172.67.173.40, 2606:4700:3034::ac43:ad28 and 2606:4700:3037::6815:1e8f.

Two other host names, along with mail.brodnica24.pl, www.developers-organism.com.cdn.cloudflare.net and hackingteam.com, also share IP numbers with cncourse.com.

Name Servers

cncourse.com has two authoritative name servers — evelyn.ns.cloudflare.com and ryan.ns.cloudflare.com.

cncourse.com shares its NS records with other domains, for example txgsinn.com, cgjcgjcgj.com, jswrw.com and two others.

At least some of cncourse.com's name servers are shared with other domains, for example bmcper.in, campuscaptain.com, pratahousela.com and two more.

These name servers tend to be deployed in combination with the name servers roxy.ns.cloudflare.com and piers.ns.cloudflare.com.

DNS names with 6 IP addresses:

evelyn.ns.cloudflare.com points to 108.162.194.213, 162.159.38.213, 172.64.34.213 and 3 other IP addresses.

ryan.ns.cloudflare.com points to 108.162.195.229, 162.159.44.229, 172.64.35.229 and 3 other IP addresses.