techcourse.co.kr - robtex.com
techcourse.co.kr
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.gabia.co.kr ⭐ | ||||||
| A | 20.200.205.248🇰🇷 Microsoft20.192.0.0/10 | ||||||
| PTR | ip-20-200-205-248.defastlink.net | ||||||
| NS | ns.gabia.co.kr | ||||||
| A | 43.201.170.100🇰🇷 Amazon43.200.0.0/14 EC2 ICN Prefix | ||||||
| PTR | ec2-43-201-170-100.ap-northeast-2.compute.amazonaws.com | ||||||
| NS | ns.gabia.net | ||||||
| A | 121.78.117.39🇰🇷 GABIA-AS-KR121.78.117.0/24 Transit customer route announce | ||||||
| PTR | ns1.gabia.co.kr | ||||||
| A | 211.234.124.90🇰🇷 DACOM-NET211.234.0.0/17 contact jblee@aunet.nm.kr if necessary contact ojupark@aunet.nm.kr if necessary | ||||||
| SOA | ns.gabia.co.krhosting@gabia.com 2021-07-22 #17 | ||||||
co.kr
| DNSSEC | ⚠️ Not signed | ||||||
| NS | g.dns.kr ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b.dns.kr ⚠️ Not in parent delegation | ||||||
| NS | c.dns.kr ⚠️ Not in parent delegation | ||||||
| NS | d.dns.kr ⚠️ Not in parent delegation | ||||||
| NS | e.dns.kr ⚠️ Not in parent delegation | ||||||
| NS | f.dns.kr ⚠️ Not in parent delegation | ||||||
| SOA | g.dns.krdomain-manager@nic.or.kr serial=2603220661 | ||||||
Same first word
techcourse.org |
techcourse.ru |
techcourse.co.kr |
Similar names
DNS History
3 records (3 active, 0 former)
●NSns.gabia.co.kr2026-02-17 → 2026-03-23 · 2 obs
● 2026-03-23 10:08:40
●NSns1.gabia.co.kr2026-02-17 → 2026-03-23 · 2 obs
● 2026-03-23 10:08:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| kr | b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr... | - |
| techcourse.co.kr | ns1.gabia.co.kr, ns.gabia.net, ns.gabia.co.kr | 2 records |
✅ Authoritative Response
Server:20.200.205.248
NS records: ns1.gabia.co.kr, ns.gabia.net, ns.gabia.co.kr
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for techcourse.co.kr (unsigned zone)
⏱️ Timing
Total: 1538ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | ns.gabia.co.kr, ns1.gabia.co.kr... |
| SOA | 1 | ns.gabia.co.kr hosting.gabia.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.gabia.co.kr, ns.gabia.co.kr)
Analysis
Name Servers
techcourse.co.kr is delegated to three name servers: ns.gabia.net, ns1.gabia.co.kr and ns.gabia.co.kr.
techcourse.co.kr at least partially shares name servers with other domains, including cjfoodsolutions.com, light1004.com, 5thwavecoffee.com, campinghouse.co.kr and softonsvc.com.
These name servers are commonly used with ns1.gabia.net.
Host names with two IP numbers:
ns.gabia.net points to: 121.78.117.39 and 211.234.124.90.
Host names with one IP number:
ns1.gabia.co.kr points to: 20.200.205.248.
ns.gabia.co.kr points to: 43.201.170.100.