`studentcircle.cn`

DNSSEC	⚠️ Not signed
A	2606:4700:3030::6815:4ffa^{🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:ac08^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.79.250^{Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.172.8^{🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`chan.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a52^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`chan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c052^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`chan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2052^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`chan.ns.cloudflare.com`
		A	108.162.192.82^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`chan.ns.cloudflare.com`
		A	172.64.32.82^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`chan.ns.cloudflare.com`
		A	173.245.58.82^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`chan.ns.cloudflare.com`
NS	`theo.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b90^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`theo.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c190^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`theo.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2190^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`theo.ns.cloudflare.com`
		A	108.162.193.144^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`theo.ns.cloudflare.com`
		A	172.64.33.144^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`theo.ns.cloudflare.com`
		A	173.245.59.144^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`theo.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.79.250, 172.67.172.8
		IPv6	2606:4700:3030::6815:4ffa, 2606:4700:3037::ac43:ac08
SOA	`chan.ns.cloudflare.com`dns@cloudflare.com serial=2397785072

`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

studentcircle.co.uk

DNS History

6 records (6 active, 0 former)

●NSchan.ns.cloudflare.com2026-03-17 → 2026-03-17 · 2 obs

● 2026-03-17 05:47:32
● 2026-03-17 05:47:34

●NStheo.ns.cloudflare.com2026-03-17 → 2026-03-17 · 2 obs

● 2026-03-17 05:47:32
● 2026-03-17 05:47:34

●A104.21.79.2502026-03-17 → 2026-03-17 · 2 obs

● 2026-03-17 05:47:32
● 2026-03-17 05:47:34

●A172.67.172.82026-03-17 → 2026-03-17 · 2 obs

● 2026-03-17 05:47:32
● 2026-03-17 05:47:34

●A2606:4700:3030::6815:4ffa2026-03-17 → 2026-03-17 · 2 obs

● 2026-03-17 05:47:32
● 2026-03-17 05:47:34

●A2606:4700:3037::ac43:ac082026-03-17 → 2026-03-17 · 2 obs

● 2026-03-17 05:47:32
● 2026-03-17 05:47:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	e.dns.cn, b.dns.cn, c.dns.cn, a.dns.cn...	-
studentcircle.cn	chan.ns.cloudflare.com, theo.ns.cloudflare.com	-

✅ Authoritative Response

Server: 172.64.33.144

NS records: chan.ns.cloudflare.com, theo.ns.cloudflare.com

🔒 DNSSEC Status

❌ Bogus (DNSSEC validation failed)

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

⏱️ Timing

Total: 3783ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.172.8, 104.21.79.250`
AAAA	2	`2606:4700:3037::ac43:ac08, 2606:4700:3030::6815:4ffa`
NS	2	`chan.ns.cloudflare.com, theo.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`chan.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

studentcircle.cn maps to four IP numbers: 2606:4700:3030::6815:4ffa, 2606:4700:3037::ac43:ac08, 104.21.79.250 and 172.67.172.8.

Other host names, for instance euyoung.net, dh1024.cc, xgamblers.com, tingsybahamas.com and yushungk.com share IP numbers with studentcircle.cn.

Name Servers

Two name servers chan.ns.cloudflare.com and theo.ns.cloudflare.com handle delegation for studentcircle.cn.

studentcircle.cn uses the same name server setup as other domains, for example dabaoliao.net, v0952.com, bjltyd.com, intrainterior.com and sj688.net.

studentcircle.cn partially shares name servers with other domains; examples include proxies.cx, ladycooper.com, moneyberry.com, no-hotels.net and impcom.international.

These name servers are commonly used with merlin.ns.cloudflare.com, doug.ns.cloudflare.com and galilea.ns.cloudflare.com.

Host names with six IP numbers: chan.ns.cloudflare.com points to: 2606:4700:50::adf5:3a52, 2803:f800:50::6ca2:c052, 2a06:98c1:50::ac40:2052, 108.162.192.82, 172.64.32.82 and 173.245.58.82; theo.ns.cloudflare.com points to: 2606:4700:58::adf5:3b90, 2803:f800:50::6ca2:c190, 2a06:98c1:50::ac40:2190, 108.162.193.144, 172.64.33.144 and 173.245.59.144.

studentcircle.cn - robtex.com