studykorean.com - dns.ninja

studykorean.com

DNSSEC⚠️ Not signed
A51.161.21.1🇨🇦 OVH51.161.0.0/17 Hosting route
PTRns3.expirationwarning.net
NSns3.expirationwarning.net ⭐
A51.161.21.1🇨🇦 OVH51.161.0.0/17 Hosting route
PTRns3.expirationwarning.net
NSns7.expirationwarning.net
A51.195.17.68🇫🇷 OVH51.195.0.0/16
PTRns7.expirationwarning.net
SOAns3.expirationwarning.nethostmaster@expirationwarning.net 2026-08-03 #0

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785756492

Subdomains

mx.studykorean.com

Same first word

studykorean.com

DNS History

12 records (3 active, 9 former)

20162017201820192020202120222023202420252026NSns3.expirationwarning.netns7.expirationwarning.netns1.ndoverdrive.comns2.ndoverdrive.comns3.ndoverdrive.comns4.ndoverdrive.comMXmail.h-email.netA51.161.21.1185.53.178.9185.53.179.9209.222.14.351.195.17.68
○NSns1.ndoverdrive.com2015-11-21 → 2017-02-08 · 4 obs
● 2015-11-21 21:50:14
● 2017-02-08 21:10:10
○ 2026-02-21 01:38:52
○ 2026-08-03 11:43:04
○NSns2.ndoverdrive.com2015-11-21 → 2017-02-08 · 4 obs
● 2015-11-21 21:50:14
● 2017-02-08 21:10:10
○ 2026-02-21 01:38:52
○ 2026-08-03 11:43:04
●NSns3.expirationwarning.net2026-02-21 → 2026-08-03 · 3 obs
○ 2017-02-08 21:10:10
● 2026-02-21 01:38:52
● 2026-08-03 11:43:04
○NSns3.ndoverdrive.com2015-11-21 → 2017-02-08 · 4 obs
● 2015-11-21 21:50:14
● 2017-02-08 21:10:10
○ 2026-02-21 01:38:52
○ 2026-08-03 11:43:04
○NSns4.ndoverdrive.com2015-11-21 → 2017-02-08 · 4 obs
● 2015-11-21 21:50:14
● 2017-02-08 21:10:10
○ 2026-02-21 01:38:52
○ 2026-08-03 11:43:04
●NSns7.expirationwarning.net2026-02-21 → 2026-08-03 · 3 obs
○ 2017-02-08 21:10:10
● 2026-02-21 01:38:52
● 2026-08-03 11:43:04
○MXmail.h-email.net2015-11-21 → 2017-02-08 · 4 obs
● 2015-11-21 21:50:14
● 2017-02-08 21:10:10
○ 2026-02-21 01:38:52
○ 2026-08-03 11:43:04
○A185.53.178.92017-02-08 → 2017-02-08 · 4 obs
○ 2016-03-13 00:20:58
● 2017-02-08 21:10:10
○ 2026-02-21 01:38:52
○ 2026-08-03 11:43:04
○A185.53.179.92015-11-21 → 2016-03-13 · 5 obs
○ 2015-07-11 21:47:08
● 2015-11-21 21:50:14
● 2016-03-13 00:20:58
○ 2017-02-08 21:10:10
○ 2026-08-03 11:43:04
○A209.222.14.32015-07-11 → 2015-07-11 · 3 obs
● 2015-07-11 21:47:08
○ 2015-11-21 21:50:14
○ 2026-08-03 11:43:04
●A51.161.21.12026-02-21 → 2026-08-03 · 17 obs
○ 2017-02-08 21:10:10
● 2026-02-21 01:38:52
● 2026-02-23 23:17:14
○ 2026-02-24 14:27:56
● 2026-03-20 19:01:52
● 2026-03-23 07:54:26
○ 2026-03-24 08:50:54
● 2026-03-26 21:00:10
● 2026-03-27 01:29:12
○ 2026-03-27 02:43:22
○ 2026-04-02 09:52:02
● 2026-04-03 06:54:50
● 2026-04-06 03:56:00
○ 2026-04-06 17:32:40
● 2026-07-08 08:01:14
○ 2026-07-10 06:03:36
● 2026-08-03 11:43:04
○A51.195.17.682026-02-24 → 2026-07-10 · 15 obs
○ 2026-02-23 23:17:14
● 2026-02-24 14:27:56
○ 2026-03-20 19:01:52
○ 2026-03-23 07:54:26
● 2026-03-24 08:50:54
○ 2026-03-26 21:00:10
○ 2026-03-27 01:29:12
● 2026-03-27 02:43:22
● 2026-04-02 09:52:02
○ 2026-04-03 06:54:50
○ 2026-04-06 03:56:00
● 2026-04-06 17:32:40
○ 2026-07-08 08:01:14
● 2026-07-10 06:03:36
○ 2026-08-03 11:43:04

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comg.gtld-servers.net, k.gtld-servers.net, e.gtld-servers.net, m.gtld-servers.net...-
studykorean.comns3.expirationwarning.net, ns7.expirationwarning.net-

✅ Authoritative Response

Server:51.161.21.1

NS records: ns3.expirationwarning.net, ns7.expirationwarning.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studykorean.com (unsigned zone)

⏱️ Timing

Total: 455ms | Queries: -

📄 Records

TypeCountSample Data
A151.161.21.1
NS2ns3.expirationwarning.net, ns7.expirationwarning.net
SOA1ns3.expirationwarning.net hostmaster.exp

Analysis

Hierarchy

mx.studykorean.com is a subdomain of studykorean.com.

IP Addresses

studykorean.com points to a single IP number: 51.161.21.1.

Additional host names — hj6262.com, xztopedu.com, finebreast.com and two others — share IP numbers with studykorean.com.

Name Servers

studykorean.com has two authoritative name servers — ns3.expirationwarning.net and ns7.expirationwarning.net.

studykorean.com shares its name server setup with other domains, including inode.hatepage.com, www.taskheep.com, ea6780b9cf3d.drdenb.com and two others.

The name servers of studykorean.com overlap at least partially with those of other domains — among them sugarshack.net, (0x787878)-teens.net, blackanese.net and two more.

These name servers commonly appear in combination with the name servers ns1.expirationwarning.net.

Both ns3.expirationwarning.net and ns7.expirationwarning.net have a single IP address each — ns3.expirationwarning.net resolves to 51.161.21.1 while ns7.expirationwarning.net resolves to 51.195.17.68.