sejongemc.com - robtex.com
sejongemc.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 183.111.183.123🇰🇷 KT-NET183.104.0.0/13 KORNET KOREA TELECOM | ||||||
| NS | sejongemc.com ⭐ | ||||||
| A | 183.111.183.123🇰🇷 KT-NET183.104.0.0/13 KORNET KOREA TELECOM | ||||||
| NS | ns.bigtree.co.kr ⚠️ Not in zone NS records | ||||||
| A | 218.145.65.143🇰🇷 KT-NET218.144.0.0/13 KORnet Powered BY Korea Telecom | ||||||
| NS | ns.sejongemc.com ⚠️ Not in parent delegation | ||||||
| NS | ns1.bigtree.co.kr ⚠️ Not in zone NS records | ||||||
| A | 116.126.143.226🇰🇷 SKB-NET116.126.0.0/16 SK Broadband | ||||||
| NS | ns1.sejongemc.com ⚠️ Not in parent delegation | ||||||
| NS | ns2.sejongemc.com ⚠️ Not in parent delegation | ||||||
| NS | ns3.sejongemc.com ⚠️ Not in parent delegation | ||||||
| MX | mail.sejongemc.com ⭐ | ||||||
| A | 61.109.252.29🇰🇷 HOSTWAY-AS-KR61.109.252.0/24 | ||||||
| TXT | v=spf1 include:_spf1.mailnara.co.kr include:_spf2.mailnara.co.kr include:_spf... | ||||||
| SOA | sejongemc.compostmaster@sejongemc.com serial=20160330 | ||||||
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=1775020912 | ||||||
Subdomains
mail.sejongemc.com |
DNS History
11 records (9 active, 2 former)
●NSns.bigtree.co.kr2026-04-01 → 2026-04-01 · 3 obs
● 2026-04-01 05:31:32
● 2026-04-01 05:31:34
●NSns.sejongemc.com2016-04-11 → 2026-04-01 · 3 obs
● 2016-04-11 11:38:12
● 2026-04-01 05:31:34
●NSns1.bigtree.co.kr2026-04-01 → 2026-04-01 · 3 obs
● 2026-04-01 05:31:32
● 2026-04-01 05:31:34
●NSns1.sejongemc.com2016-04-11 → 2026-04-01 · 3 obs
● 2016-04-11 11:38:12
● 2026-04-01 05:31:34
●NSns2.sejongemc.com2016-04-11 → 2026-04-01 · 3 obs
● 2016-04-11 11:38:12
● 2026-04-01 05:31:34
○NSns3.daeguhomepage.com2015-05-30 → 2016-01-03 · 4 obs
● 2016-01-03 11:14:02
○ 2016-04-11 11:38:12
○ 2026-04-01 05:31:34
●NSns3.sejongemc.com2016-04-11 → 2026-04-01 · 3 obs
● 2016-04-11 11:38:12
● 2026-04-01 05:31:34
●NSsejongemc.com2016-04-11 → 2026-04-01 · 3 obs
● 2016-04-11 11:38:12
● 2026-04-01 05:31:34
●MXmail.sejongemc.com2015-05-30 → 2026-04-01 · 2 obs
● 2026-04-01 05:31:34
○A115.68.14.302015-05-30 → 2016-01-03 · 4 obs
● 2016-01-03 11:14:02
○ 2016-04-11 11:38:12
○ 2026-04-01 05:31:34
●A183.111.183.1232016-04-11 → 2026-04-01 · 3 obs
● 2016-04-11 11:38:12
● 2026-04-01 05:31:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, a.gtld-servers.net, c.gtld-servers.net, j.gtld-servers.net... | - |
| sejongemc.com | ns.bigtree.co.kr, ns1.bigtree.co.kr | - |
✅ Authoritative Response
Server:116.126.143.226
NS records: ns.bigtree.co.kr, ns1.bigtree.co.kr
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sejongemc.com (unsigned zone)
⏱️ Timing
Total: 4298ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 183.111.183.123 |
| NS | 4 | ns1.sejongemc.com, ns2.sejongemc.com... |
| MX | 1 | mail.sejongemc.com (pri: 10) |
| TXT | 1 | v=spf1 include:_spf1.mailnara.co.kr incl |
| SOA | 1 | sejongemc.com postmaster.sejongemc.com |
Analysis
Hierarchy
sejongemc.com is the parent of mail.sejongemc.com.
IP Addresses
sejongemc.com resolves to a single IP address: 183.111.183.123.
Other host names including ijfms.org, cm-diamond.com, ggpension.kr, www.netist.co.kr and 100010001000.co.kr share IP numbers with sejongemc.com.
Name Servers
sejongemc.com is delegated to seven name servers: sejongemc.com, ns1.sejongemc.com, ns2.sejongemc.com, ns3.sejongemc.com, ns.sejongemc.com, ns1.bigtree.co.kr and ns.bigtree.co.kr.
sejongemc.com at least partially shares name servers with other domains, including taeyangtechno.co.kr, swmetal.co.kr, uyn.co.kr, korspm.com and alpha21.co.kr.
These name servers are commonly used with the name servers ns2.bigtree.co.krns3.bigtree.co.krns1.taeyangtechno.co.krns2.taeyangtechno.co.krns3.taeyangtechno.co.kr and ns.taeyangtechno.co.kr.
Hostnames with a single IP:
sejongemc.com points to: 183.111.183.123.
ns1.bigtree.co.kr points to: 116.126.143.226.
ns.bigtree.co.kr points to: 218.145.65.143.
Mail Servers
sejongemc.com is handled by a single mail server, mail.sejongemc.com.
mail.sejongemc.com points to a single IP: 61.109.252.29.