linuxstudy.com - dns.ninja
linuxstudy.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 210.183.214.2🇰🇷 SHNS-AS210.183.214.0/24 | ||||||
| NS | ns2.nskorea.net ⭐ | ||||||
| A | 222.231.49.254🇰🇷 DACOM-NET222.231.0.0/18 contact noc@bora.net if necessary | ||||||
| NS | ns.nskorea.net ⚠️ Not in parent delegation | ||||||
| A | 222.231.2.254🇰🇷 DACOM-NET222.231.0.0/18 contact noc@bora.net if necessary | ||||||
| PTR | ns.nskorea.net | ||||||
| NS | ns3.nskorea.net | ||||||
| A | 222.231.3.254🇰🇷 DACOM-NET222.231.0.0/18 contact noc@bora.net if necessary | ||||||
| PTR | ns2.nskorea.net | ||||||
| MX | jmail.linuxstudy.com ⭐ | ||||||
| A | 222.231.3.16🇰🇷 DACOM-NET222.231.0.0/18 contact noc@bora.net if necessary | ||||||
| PTR | c16.nskorea.com | ||||||
| TXT | v=spf1 ip4:222.231.3.16 ~all | ||||||
| SOA | ns.nskorea.netserver@jungbo.net serial=2022000000 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1780977426 | ||||||
Subdomains
jmail.linuxstudy.com |
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns.nskorea.net2015-07-25 → 2026-06-09 · 2 obs
● 2026-06-09 04:06:52
●NSns2.nskorea.net2015-07-25 → 2026-06-09 · 2 obs
● 2026-06-09 04:06:52
●NSns3.nskorea.net2015-07-25 → 2026-06-09 · 2 obs
● 2026-06-09 04:06:52
●MXjmail.linuxstudy.com2015-07-25 → 2026-06-09 · 2 obs
● 2026-06-09 04:06:52
●A210.183.214.22015-07-25 → 2026-06-09 · 2 obs
● 2026-06-09 04:06:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, a.gtld-servers.net, k.gtld-servers.net, j.gtld-servers.net... | - |
| linuxstudy.com | ns.nskorea.net, ns2.nskorea.net | - |
✅ Authoritative Response
Server:222.231.49.254
NS records: ns.nskorea.net, ns2.nskorea.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for linuxstudy.com (unsigned zone)
⏱️ Timing
Total: 934ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 210.183.214.2 |
| NS | 3 | ns.nskorea.net, ns3.nskorea.net... |
| MX | 1 | jmail.linuxstudy.com (pri: 100) |
| TXT | 1 | v=spf1 ip4:222.231.3.16 ~all |
| SOA | 1 | ns.nskorea.net server.jungbo.net |
Analysis
Hierarchy
jmail.linuxstudy.com is a subdomain of linuxstudy.com.
IP Addresses
linuxstudy.com points to a single IP number: 210.183.214.2.
Name Servers
DNS for linuxstudy.com is handled by three authoritative name servers: ns2.nskorea.net, ns3.nskorea.net and ns.nskorea.net.
The name servers of linuxstudy.com overlap at least partially with those of other domains — among them cwtech.co.kr, coffeemc.kr, moonja.net and two more.
ns2.nskorea.net, ns3.nskorea.net and ns.nskorea.net all have one IP address each — ns2.nskorea.net directs to 222.231.49.254, ns3.nskorea.net directs to 222.231.3.254 and ns.nskorea.net directs to 222.231.2.254.
Mail Servers
linuxstudy.com has one mail server: jmail.linuxstudy.com.
jmail.linuxstudy.com has exactly one IP number: 222.231.3.16.