teach.co.kr - robtex.com
teach.co.kr
| DNSSEC | ⚠️ Not signed | ||||||
| A | 222.237.78.212🇰🇷 SKB-NET222.232.0.0/13 SK Broadband | ||||||
| NS | ns3.dnszi.com ⭐ | ||||||
| A | 121.78.251.20🇰🇷 KINXIDC-AS-KR121.78.224.0/19 KINX-Net | ||||||
| NS | ns18.dnszi.com | ||||||
| A | 121.78.72.36🇰🇷 KINXIDC-AS-KR121.78.72.0/24 KINX-IDC | ||||||
| PTR | ns18.dnszi.com | ||||||
| NS | ns51.dnszi.com ⚠️ Not in parent delegation | ||||||
| A | 27.1.16.81🇰🇷 DAOU-AS-KR27.1.16.0/22 DAOU Tech | ||||||
| PTR | ns51.dnszi.com | ||||||
| NS | ns62.dnszi.com ⚠️ Not in parent delegation | ||||||
| A | 58.120.225.167🇰🇷 SKB-NET58.120.0.0/13 auto-generated route object for 58.120.0.0/13 | ||||||
| PTR | ns62.dnszi.com | ||||||
| NS | ns74.dnszi.com ⚠️ Not in parent delegation | ||||||
| A | 121.78.251.26🇰🇷 KINXIDC-AS-KR121.78.224.0/19 KINX-Net | ||||||
| TXT | e0379b694d7b47d8673d56eb805d5a4d0f4c1ed6 | ||||||
| SOA | ns3.dnszi.comroot@dnszi.com 2025-04-10 #1 | ||||||
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=2607020937 | ||||||
Same first word
Similar names
DNS History
6 records (6 active, 0 former)
●A222.237.78.2122026-06-30 → 2026-07-02 · 2 obs
● 2026-07-02 11:19:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| kr | b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr... | 10 records |
| teach.co.kr | ns3.dnszi.com, ns18.dnszi.com | - |
✅ Authoritative Response
Server:121.78.72.36
NS records: ns3.dnszi.com, ns18.dnszi.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for teach.co.kr (unsigned zone)
⏱️ Timing
Total: 1616ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 222.237.78.212 |
| NS | 5 | ns18.dnszi.com, ns51.dnszi.com... |
| TXT | 1 | e0379b694d7b47d8673d56eb805d5a4d0f4c1ed6 |
| SOA | 1 | ns3.dnszi.com root.dnszi.com |
📌 Glue Records Collected
Total: 10
In-bailiwick: 10 (b.dns.kr, c.dns.kr, d.dns.kr...)
Analysis
IP Addresses
teach.co.kr has exactly one IP address — 222.237.78.212.
packet.kr, mail.iv.co.kr, provence.co.kr plus two other host names have IP numbers in common with teach.co.kr.
Name Servers
Five name servers handle delegation for teach.co.kr: ns18.dnszi.com, ns3.dnszi.com, ns51.dnszi.com and two others.
At least some of teach.co.kr's name servers are shared with other domains, for example psk.or.kr, 15889800.com, zandy.co.kr and two more.
These name servers tend to be deployed in combination with the name servers ns62.dnszi.com and ns74.dnszi.com.
Host names resolving to a single IP address:
ns18.dnszi.com resolves to 121.78.72.36.
ns3.dnszi.com resolves to 121.78.251.20.
ns51.dnszi.com resolves to 27.1.16.81.
ns62.dnszi.com resolves to 58.120.225.167.
ns74.dnszi.com resolves to 121.78.251.26.