semstudy.cn - dns.ninja

`semstudy.cn`

DNSSEC	⚠️ Not signed
NS	`ns7.cnmsn.net` ⚠️ Not in zone NS records
NS	`ns8.cnmsn.net` ⚠️ Not in zone NS records
		A	240c:4082:ffff:ff01:0:d:0:69^{🇨🇳 Baidu240c:4082::/32}
		A	61.172.183.70^{🇨🇳 SHANGHAITELECOM61.172.182.0/23 SHIDC}
		A	61.240.129.147^{🇨🇳 CHINA169-Backbone61.240.128.0/19 CMI (Customer Route)}

	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 2035-08-09 #22

semstudy.cn

semstudy.com

stuydems.net

studysem.org

dusystem.com

smestudy.com

studyems.com

udsystem.com

8 records (2 active, 6 former)

○NSdns.bizcn.com2026-04-27 → 2026-04-27 · 4 obs

○ 2017-10-25 21:36:04
● 2026-04-27 15:31:26
○ 2026-07-17 13:28:10
○ 2026-07-23 20:12:24

○NSdns10.hichina.com2017-10-25 → 2017-10-25 · 3 obs

● 2017-10-25 21:36:04
○ 2026-04-27 15:31:26
○ 2026-07-23 20:12:24

○NSdns9.hichina.com2017-10-25 → 2017-10-25 · 3 obs

● 2017-10-25 21:36:04
○ 2026-04-27 15:31:26
○ 2026-07-23 20:12:24

●NSns7.cnmsn.net2026-04-27 → 2026-07-23 · 3 obs

○ 2017-10-25 21:36:04
● 2026-04-27 15:31:26
● 2026-07-23 20:12:24

●NSns8.cnmsn.net2026-04-27 → 2026-07-23 · 3 obs

○ 2017-10-25 21:36:04
● 2026-04-27 15:31:26
● 2026-07-23 20:12:24

○MXmx.ym.163.com2017-10-25 → 2017-10-25 · 3 obs

● 2017-10-25 21:36:04
○ 2026-04-27 15:31:26
○ 2026-07-23 20:12:24

○A103.142.103.1362026-04-27 → 2026-04-27 · 4 obs

○ 2017-10-25 21:36:04
● 2026-04-27 15:31:26
○ 2026-07-17 13:28:10
○ 2026-07-23 20:12:24

○A139.129.142.1832017-10-25 → 2017-10-25 · 3 obs

● 2017-10-25 21:36:04
○ 2026-04-27 15:31:26
○ 2026-07-23 20:12:24

semstudy.cn uses two name servers for its delegation: ns7.cnmsn.net and ns8.cnmsn.net.

semstudy.cn shares its NS records with other domains, for example shzhaoli.com, ptien.com, global-dir.org and two others.

semstudy.cn shares at least some of its name servers with other domains, including jfh-sz.com, litaoshhai.com, rc2345.com and two others.

These name servers are frequently seen alongside the name servers dns.bizcn.com.

Hostnames that map to three IP numbers: