leadtech.kr - dns.ninja
leadtech.kr
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.sdsns.com ⭐ | ||||||
| A | 211.115.203.112🇰🇷 HOSTWAY-AS-KR211.115.203.0/24 SejongTelecom.co.ltd | ||||||
| NS | ns2.sdsns.com | ||||||
| A | 211.239.157.110🇰🇷 HOSTWAY-AS-KR211.239.157.0/24 SejongTelecom.co.ltd | ||||||
| MX | mail.leadtech.kr ⭐ | ||||||
| A | 223.130.109.62🇰🇷 DIRECT-AS-KR223.130.109.0/24 | ||||||
| TXT | v=spf1 include:_spf1.mailnara.co.kr include:_spf2.mailnara.co.kr include:_spf... | ||||||
| SOA | ns1.sdsns.comfirechoi@sds.co.kr 2020-03-06 #7 | ||||||
kr
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | g.dns.kr ⭐ | ||||||
| NS | b.dns.kr | ||||||
| NS | c.dns.kr | ||||||
| NS | d.dns.kr | ||||||
| NS | e.dns.kr | ||||||
| NS | f.dns.kr | ||||||
| SOA | g.dns.krdomain-manager@nic.or.kr serial=2607010910 | ||||||
Previously NS for
leadtech.kr |
Subdomains
mail.leadtech.kr |
Same first word
Similar names
DNS History
10 records (3 active, 7 former)
○NSleadtech.kr2018-12-21 → 2018-12-21 · 3 obs
○ 2026-03-29 17:04:32
○ 2026-07-01 11:25:16
○NSns.leadtech.kr2018-12-21 → 2018-12-21 · 3 obs
○ 2026-03-29 17:04:32
○ 2026-07-01 11:25:16
○NSns1.leadtech.kr2018-12-21 → 2018-12-21 · 3 obs
○ 2026-03-29 17:04:32
○ 2026-07-01 11:25:16
●NSns1.sdsns.com2026-03-29 → 2026-07-01 · 3 obs
● 2026-03-29 17:04:32
● 2026-07-01 11:25:16
○NSns2.leadtech.kr2018-12-21 → 2018-12-21 · 3 obs
○ 2026-03-29 17:04:32
○ 2026-07-01 11:25:16
●NSns2.sdsns.com2026-03-29 → 2026-07-01 · 3 obs
● 2026-03-29 17:04:32
● 2026-07-01 11:25:16
○NSns3.leadtech.kr2018-12-21 → 2018-12-21 · 3 obs
○ 2026-03-29 17:04:32
○ 2026-07-01 11:25:16
●MXmail.leadtech.kr2026-03-29 → 2026-07-01 · 4 obs
● 2026-03-29 17:04:32
○ 2026-06-30 00:42:30
● 2026-07-01 11:25:16
○MXrmw-002.fmcity.com2018-12-21 → 2018-12-21 · 3 obs
○ 2026-03-29 17:04:32
○ 2026-07-01 11:25:16
○A183.111.141.532018-12-21 → 2018-12-21 · 3 obs
○ 2026-03-29 17:04:32
○ 2026-07-01 11:25:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| kr | b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr... | - |
| leadtech.kr | ns2.sdsns.com, ns1.sdsns.com | - |
✅ Authoritative Response
Server:211.115.203.112
NS records: ns2.sdsns.com, ns1.sdsns.com
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at kr: Error: DNS query timeout: 210.101.60.1 for DNSKEY kr
⏱️ Timing
Total: 4629ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns1.sdsns.com, ns2.sdsns.com |
| MX | 1 | mail.leadtech.kr (pri: 0) |
| TXT | 1 | v=spf1 include:_spf1.mailnara.co.kr incl |
| SOA | 1 | ns1.sdsns.com firechoi.sds.co.kr |
Analysis
Hierarchy
mail.leadtech.kr is delegated beneath leadtech.kr.
Name Servers
leadtech.kr has two authoritative name servers — ns1.sdsns.com and ns2.sdsns.com.
leadtech.kr shares its name server setup with other domains, including iss-intl.com, dsmentoring.com, rootsoft.co.kr and two others.
There is at least partial name server overlap between leadtech.kr and other domains — nolza.net, pnksemi.com, daekicorp.co.kr and two more among them.
The name servers ns1.direct.co.kr, ns3.direct.co.kr and ns4.direct.co.kr are often found in combination with these name servers.
ns1.sdsns.com → 211.115.203.112 and ns2.sdsns.com → 211.239.157.110: one IP number per host name.
Mail Servers
leadtech.kr has one mail server: mail.leadtech.kr.
mail.leadtech.kr points to one IP number — 223.130.109.62.