sdntcorp.com - robtex.com
sdntcorp.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 183.111.182.209🇰🇷 KT-NET183.104.0.0/13 KORNET KOREA TELECOM | ||||||
| NS | sdntcorp.com ⭐ | ||||||
| A | 183.111.182.209🇰🇷 KT-NET183.104.0.0/13 KORNET KOREA TELECOM | ||||||
| NS | ns.infodu.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.sdntcorp.com ⚠️ Not in parent delegation | ||||||
| NS | ns1.infodu.co.kr ⚠️ Not in zone NS records | ||||||
| A | 116.126.143.226🇰🇷 SKB-NET116.126.0.0/16 SK Broadband | ||||||
| NS | ns1.sdntcorp.com ⚠️ Not in parent delegation | ||||||
| NS | ns2.infodu.co.kr ⚠️ Not in zone NS records | ||||||
| A | 218.145.65.144🇰🇷 KT-NET218.144.0.0/13 KORnet Powered BY Korea Telecom | ||||||
| NS | ns2.sdntcorp.com ⚠️ Not in parent delegation | ||||||
| NS | ns3.infodu.co.kr ⚠️ Not in zone NS records | ||||||
| A | 116.126.143.225🇰🇷 SKB-NET116.126.0.0/16 SK Broadband | ||||||
| NS | ns3.sdntcorp.com ⚠️ Not in parent delegation | ||||||
| MX | wmx.ecounterp.com ⭐ | ||||||
| A | 43.200.46.3🇰🇷 Amazon43.200.0.0/14 EC2 ICN Prefix | ||||||
| PTR | ec2-43-200-46-3.ap-northeast-2.compute.amazonaws.com | ||||||
| TXT | v=spf1 mx include:spf.ecounterp.com ~all | ||||||
| SOA | sdntcorp.compostmaster@sdntcorp.com serial=20251027 | ||||||
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=1785613497 | ||||||
NS for
sdntcorp.com |
Subdomains
Same first word
sdntcorp.com |
Similar names
DNS History
16 records (11 active, 5 former)
●NSns.infodu.co.kr2026-06-23 → 2026-08-01 · 3 obs
● 2026-06-23 12:52:02
● 2026-08-01 19:56:48
●NSns.sdntcorp.com2026-06-23 → 2026-08-01 · 3 obs
● 2026-06-23 12:52:02
● 2026-08-01 19:56:48
●NSns1.infodu.co.kr2026-06-23 → 2026-08-01 · 3 obs
● 2026-06-23 12:52:02
● 2026-08-01 19:56:48
●NSns1.sdntcorp.com2026-06-23 → 2026-08-01 · 3 obs
● 2026-06-23 12:52:02
● 2026-08-01 19:56:48
○NSns1.whoisdomain.kr2019-04-13 → 2019-04-13 · 3 obs
○ 2026-06-23 12:52:02
○ 2026-08-01 19:56:48
●NSns2.infodu.co.kr2026-06-23 → 2026-08-01 · 3 obs
● 2026-06-23 12:52:02
● 2026-08-01 19:56:48
●NSns2.sdntcorp.com2026-06-23 → 2026-08-01 · 3 obs
● 2026-06-23 12:52:02
● 2026-08-01 19:56:48
○NSns2.whoisdomain.kr2019-04-13 → 2019-04-13 · 3 obs
○ 2026-06-23 12:52:02
○ 2026-08-01 19:56:48
●NSns3.infodu.co.kr2026-06-23 → 2026-08-01 · 3 obs
● 2026-06-23 12:52:02
● 2026-08-01 19:56:48
●NSns3.sdntcorp.com2026-06-23 → 2026-08-01 · 3 obs
● 2026-06-23 12:52:02
● 2026-08-01 19:56:48
○NSns3.whoisdomain.kr2019-04-13 → 2019-04-13 · 3 obs
○ 2026-06-23 12:52:02
○ 2026-08-01 19:56:48
○NSns4.whoisdomain.kr2019-04-13 → 2019-04-13 · 3 obs
○ 2026-06-23 12:52:02
○ 2026-08-01 19:56:48
●NSsdntcorp.com2026-06-23 → 2026-08-01 · 3 obs
● 2026-06-23 12:52:02
● 2026-08-01 19:56:48
●MXwmx.ecounterp.com2026-06-23 → 2026-08-01 · 2 obs
● 2026-08-01 19:56:48
○A116.126.87.362019-04-13 → 2019-04-13 · 3 obs
○ 2026-06-23 12:52:02
○ 2026-08-01 19:56:48
●A183.111.182.2092026-06-23 → 2026-08-01 · 3 obs
● 2026-06-23 12:52:02
● 2026-08-01 19:56:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| sdntcorp.com | ns.infodu.co.kr, ns1.infodu.co.kr, ns2.infodu.co.kr, ns3.infodu.co.kr | - |
✅ Authoritative Response
Server:116.126.143.225
NS records: ns.infodu.co.kr, ns1.infodu.co.kr, ns2.infodu.co.kr, ns3.infodu.co.kr
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sdntcorp.com (unsigned zone)
⏱️ Timing
Total: 2336ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 183.111.182.209 |
| NS | 4 | ns.sdntcorp.com, ns3.sdntcorp.com... |
| MX | 1 | wmx.ecounterp.com (pri: 10) |
| TXT | 1 | v=spf1 mx include:spf.ecounterp.com ~all |
| SOA | 1 | sdntcorp.com postmaster.sdntcorp.com |
Analysis
Hierarchy
sdntcorp.com serves as the parent of ns1.sdntcorp.com, ns.sdntcorp.com, ns3.sdntcorp.com and ns2.sdntcorp.com.
Name Server Role
sdntcorp.com is listed as a name server for sdntcorp.com — it is in-bailiwick, authoritative for its own domain.
It is common to see ns1.sdntcorp.com, ns2.sdntcorp.com and ns3.sdntcorp.com acting as name servers in combination with sdntcorp.com.
IP Addresses
sdntcorp.com has exactly one IP address — 183.111.182.209.
grand1.co.kr, kis.co.kr, csnsb.com plus two other host names have IP numbers in common with sdntcorp.com.
Name Servers
DNS for sdntcorp.com is delegated to 9 name servers: sdntcorp.com, ns1.sdntcorp.com, ns2.sdntcorp.com plus 6 other.
sdntcorp.com has at least partial name server overlap with other domains, such as jjritomato.com, wj-gasket.com, dkangle.com and two others.
It is common to find these name servers paired with the name servers ns1.infodu.co.kr, ns3.infodu.co.kr, ns.infodu.co.kr and ns2.infodu.co.kr.
Host names resolving to a single IP address:
sdntcorp.com directs to 183.111.182.209.
ns1.infodu.co.kr directs to 116.126.143.226.
ns2.infodu.co.kr directs to 218.145.65.144.
ns3.infodu.co.kr directs to 116.126.143.225.
ns.infodu.co.kr directs to 218.145.65.143.
Mail Servers
sdntcorp.com uses one mail server — wmx.ecounterp.com.
The mail server setup of sdntcorp.com matches that of other domains such as nori-ter.com, funnyvideo.co.kr, hambageu.com and two others.
At least some of the mail servers used by sdntcorp.com are shared with other domains: koryosmt.co.kr, sonimedi.com, neos-lab.com and two others among them.
wmx.ecounterp.com has exactly one IP number: 43.200.46.3.