jtk.co.kr - robtex.com

jtk.co.kr

DNSSEC⚠️ Not signed
A202.31.187.154🇰🇷 KT-NET202.31.187.0/24 I Names
PTRip-202-31-187-154.defastlink.net
NSa.misconfigured.powerdns.server ⭐
NSns3.cypack.com ⚠️ Not in zone NS records
A202.31.186.53🇰🇷 KT-NET202.31.186.0/24 Proxy-Registered Route Object by DACOM(AS3786)
PTRip-202-31-186-53.defastlink.net
NSns4.cypack.com ⚠️ Not in zone NS records
A202.31.187.222🇰🇷 KT-NET202.31.187.0/24 I Names
PTRip-202-31-187-222.defastlink.net
MXmail.jtk.co.kr ⭐
SOAa.misconfigured.powerdns.serverhostmaster@jtk.co.kr serial=0

co.kr

DNSSEC⚠️ Not signed
NSg.dns.kr ⭐ ⚠️ Not in parent delegation
NSb.dns.kr ⚠️ Not in parent delegation
NSc.dns.kr ⚠️ Not in parent delegation
NSd.dns.kr ⚠️ Not in parent delegation
NSe.dns.kr ⚠️ Not in parent delegation
NSf.dns.kr ⚠️ Not in parent delegation
SOAg.dns.krdomain-manager@nic.or.kr serial=2605310648
WOT: UNKNOWN (62/100)

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DNS History

5 records (5 active, 0 former)

20162017201820192020202120222023202420252026NSa.misconfigured.powerdns.serverns3.cypack.comns4.cypack.comMXmail.jtk.co.krA202.31.187.154
●NSa.misconfigured.powerdns.server2026-05-12 → 2026-05-31 · 3 obs
○ 2020-02-26 12:40:38
● 2026-05-12 22:14:58
● 2026-05-31 07:00:28
●NSns3.cypack.com2015-07-08 → 2026-05-31 · 2 obs
● 2015-07-08 08:57:46
● 2026-05-31 07:00:28
●NSns4.cypack.com2015-07-08 → 2026-05-31 · 4 obs
● 2015-07-08 08:57:46
○ 2015-11-11 20:26:56
● 2020-02-26 12:40:38
● 2026-05-31 07:00:28
●MXmail.jtk.co.kr2015-07-08 → 2026-05-31 · 2 obs
● 2015-07-08 08:57:46
● 2026-05-31 07:00:28
●A202.31.187.1542015-07-08 → 2026-05-31 · 2 obs
● 2015-07-08 08:57:46
● 2026-05-31 07:00:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
krb.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr...-

✅ Authoritative Response

Server:210.101.61.1

NS records: b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr, f.dns.kr, g.dns.kr

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 3933ms | Queries: -

📄 Records

TypeCountSample Data

Analysis

IP Addresses

jtk.co.kr directs to one IP number, which is 202.31.187.154.

Among the host names that share IP numbers with jtk.co.kr are nineteen.co.kr, chulsan.com, okway.com and two others.

Name Servers

Three name servers are authoritative for jtk.co.kr: ns3.cypack.com, ns4.cypack.com and a.misconfigured.powerdns.server.

There is at least partial name server overlap between jtk.co.kr and other domains — mvdmedia.ru, ocebon.com, bipann.com and two more among them.

These name servers commonly co-occur with name servers ns1.ipbery.com, ns2.ipbery.com, ns1.rybatr.com and three more.

ns3.cypack.com → 202.31.186.53 and ns4.cypack.com → 202.31.187.222: one IP number per host name.

Mail Servers

jtk.co.kr routes its mail through a single mail server, mail.jtk.co.kr.