`studfdu.cyou`

DNSSEC	⚠️ Not signed
A	45.61.163.21^{🇺🇸 AS1495645.61.163.0/24 FranTech Solutions}
		PTR	`21.163.61.45.static.cloudzy.com`
NS	`ns1.dyna-ns.net` ⭐
		A	2400:cb00:2049:1::a29f:1a5c^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	2400:cb00:2049:1::a29f:1b9e^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	162.159.26.92^{Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.dyna-ns.net`
		A	162.159.27.158^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.dyna-ns.net`
NS	`ns2.dyna-ns.net`
		A	2400:cb00:2049:1::a29f:1805^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	2400:cb00:2049:1::a29f:1905^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	162.159.24.5^{Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.dyna-ns.net`
		A	162.159.25.5^{Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.dyna-ns.net`
SOA	`ns1.dyna-ns.net`hostmaster@studfdu.cyou 2026-03-05 #2

`cyou`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.nic.cyou`
	NS	`b.nic.cyou`
	NS	`c.nic.cyou`
	NS	`d.nic.cyou`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1774560802

⚠️ On DNS blocklist: tif

Same first word

studfdu.cyou

DNS History

5 records (3 active, 2 former)

●NSns1.dyna-ns.net2026-02-19 → 2026-03-26 · 2 obs

● 2026-02-19 13:22:38
● 2026-03-26 21:42:18

●NSns2.dyna-ns.net2026-02-19 → 2026-03-26 · 2 obs

● 2026-02-19 13:22:38
● 2026-03-26 21:42:18

○A151.245.121.512026-03-04 → 2026-03-04 · 4 obs

○ 2026-02-19 13:22:38
● 2026-03-04 05:35:10
○ 2026-03-26 21:42:16
○ 2026-03-26 21:42:18

○A37.77.150.1712026-02-19 → 2026-02-19 · 3 obs

● 2026-02-19 13:22:38
○ 2026-03-04 05:35:10
○ 2026-03-26 21:42:18

●A45.61.163.212026-03-26 → 2026-03-26 · 3 obs

○ 2026-03-04 05:35:10
● 2026-03-26 21:42:16
● 2026-03-26 21:42:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cyou	a.nic.cyou, b.nic.cyou, c.nic.cyou, d.nic.cyou	8 records
studfdu.cyou	ns1.dyna-ns.net, ns2.dyna-ns.net	-

✅ Authoritative Response

Server:162.159.25.5

NS records: ns1.dyna-ns.net, ns2.dyna-ns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studfdu.cyou (unsigned zone)

⏱️ Timing

Total: 2083ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`45.61.163.21`
NS	2	`ns1.dyna-ns.net, ns2.dyna-ns.net`
SOA	1	`ns1.dyna-ns.net hostmaster.studfdu.cyou`

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (a.nic.cyou, b.nic.cyou, c.nic.cyou...)

Analysis

IP Addresses

studfdu.cyou points to a single IP number: 45.61.163.21.

other host names for instance stathas.cyou, tragedj.cyou, sanicue.cyou, backsan.cyou and yelloww.cyou share IP numbers with studfdu.cyou.

Name Servers

studfdu.cyou is delegated to two name servers: ns1.dyna-ns.net and ns2.dyna-ns.net.

studfdu.cyou shares the same name server setup as other domains, for example rmace.com, modofoundation.com, healthassociation.net, chengnue.com and 8xzhaohuimail.com.

Host names with four IP numbers:

ns1.dyna-ns.net resolves to: 2400:cb00:2049:1::a29f:1a5c, 2400:cb00:2049:1::a29f:1b9e, 162.159.26.92 and 162.159.27.158.

ns2.dyna-ns.net resolves to: 2400:cb00:2049:1::a29f:1805, 2400:cb00:2049:1::a29f:1905, 162.159.24.5 and 162.159.25.5.

studfdu.cyou - robtex.com

studfdu.cyou

cyou