4study.cn - dns.ninja

4study.cn

DNSSEC⚠️ Not signed
NSdm1.longmingdns.com ⭐
A218.98.111.163🇩🇪 HKCICL-AS-AP218.98.111.0/24 HONG KONG COMMUNICATIONS INTERNATIONAL CO.,LIMITED
NSdm2.longmingdns.com
A183.253.57.197🇨🇳 CHINAMOBILE-CN183.253.0.0/16 CMI (Customer Route)
A211.99.99.56🇨🇳 DONGGUAN-1211.99.99.0/24 Proxy-registered route object
SOAdm1.longmingdns.comdnsadmin@longmingdns.com serial=1781100461

cn

DNSSEC🔒 Signed (DS record present)
NSa.dns.cn ⭐
NSb.dns.cn
NSc.dns.cn
NSd.dns.cn
NSe.dns.cn
NSns.cernet.net ⚠️ Not in parent delegation
SOAa.dns.cnroot@cnnic.cn 2035-02-27 #28

Same first word

4study.pro
4study.com
4study.cn
4study.ir
4study.de
4study.nl

Similar names

study4.tw
study4.fun
study4.com
study4.me
study4.net

DNS History

12 records (2 active, 10 former)

20162017201820192020202120222023202420252026NSdm1.longmingdns.comdm2.longmingdns.comdns31.hichina.comdns32.hichina.commarvin.ns.cloudflare.comserena.ns.cloudflare.comA183.90.188.57188.114.96.0188.114.97.02a06:98c1:3120::2a06:98c1:3121::61.154.116.228
●NSdm1.longmingdns.com2026-07-09 → 2026-07-09 · 2 obs
○ 2016-12-31 17:51:32
● 2026-07-09 22:38:24
●NSdm2.longmingdns.com2026-07-09 → 2026-07-09 · 2 obs
○ 2016-12-31 17:51:32
● 2026-07-09 22:38:24
○NSdns31.hichina.com2015-08-13 → 2016-12-31 · 3 obs
● 2015-08-13 13:00:22
● 2016-12-31 17:51:32
○ 2026-07-09 22:38:24
○NSdns32.hichina.com2015-08-13 → 2016-12-31 · 3 obs
● 2015-08-13 13:00:22
● 2016-12-31 17:51:32
○ 2026-07-09 22:38:24
○NSmarvin.ns.cloudflare.com2026-07-09 → 2026-07-09 · 1 obs
○ 2026-07-09 22:38:24
○NSserena.ns.cloudflare.com2026-07-09 → 2026-07-09 · 1 obs
○ 2026-07-09 22:38:24
○A183.90.188.572015-12-03 → 2016-12-31 · 4 obs
○ 2015-08-13 13:00:22
● 2015-12-03 20:17:52
● 2016-12-31 17:51:32
○ 2026-07-09 22:38:24
○A188.114.96.02026-07-09 → 2026-07-09 · 1 obs
○ 2026-07-09 22:38:24
○A188.114.97.02026-07-09 → 2026-07-09 · 1 obs
○ 2026-07-09 22:38:24
○A2a06:98c1:3120::2026-07-09 → 2026-07-09 · 1 obs
○ 2026-07-09 22:38:24
○A2a06:98c1:3121::2026-07-09 → 2026-07-09 · 1 obs
○ 2026-07-09 22:38:24
○A61.154.116.2282015-08-13 → 2015-08-13 · 3 obs
● 2015-08-13 13:00:22
○ 2015-12-03 20:17:52
○ 2026-07-09 22:38:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cna.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...-
4study.cndm1.longmingdns.com, dm2.longmingdns.com-

✅ Authoritative Response

Server:218.98.111.163

NS records: dm1.longmingdns.com, dm2.longmingdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 4study.cn (unsigned zone)

⏱️ Timing

Total: 1806ms | Queries: -

📄 Records

TypeCountSample Data
NS2dm1.longmingdns.com, dm2.longmingdns.com
SOA1dm1.longmingdns.com dnsadmin.longmingdns

Analysis

Name Servers

Two name servers handle the delegation for 4study.cn: dm1.longmingdns.com and dm2.longmingdns.com.

4study.cn uses the same name servers as several other domains — among them mbtek.cn, minmt.cn, anda163.cn and two more.

Hostnames that resolve to two IP addresses:

dm2.longmingdns.com resolves to two addresses: 183.253.57.197 and 211.99.99.56.

Hosts with just one IP address:

The hostname dm1.longmingdns.com resolves to 218.98.111.163.