o2school.co.kr - robtex.com
o2school.co.kr
| DNSSEC | ⚠️ Not signed | ||||||
| A | 14.49.42.13🇰🇷 KT-NET14.48.0.0/13 Korea Telecom | ||||||
| NS | o2school.co.kr ⭐ | ||||||
| A | 14.49.42.13🇰🇷 KT-NET14.48.0.0/13 Korea Telecom | ||||||
| NS | dns1.o2school.co.kr ⚠️ Not in zone NS records | ||||||
| A | 14.63.225.15🇰🇷 KT-NET14.56.0.0/13 Korea Telecom | ||||||
| NS | dns2.o2school.co.kr ⚠️ Not in zone NS records | ||||||
| A | 14.63.220.83🇰🇷 KT-NET14.56.0.0/13 Korea Telecom | ||||||
| SOA | o2school.co.krroot@@o2school.co.kr 2026-05-10 #2 | ||||||
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=2608080567 | ||||||
NS for
o2school.co.kr |
Subdomains
Same first word
DNS History
6 records (4 active, 2 former)
●NSdns1.o2school.co.kr2015-07-26 → 2026-08-08 · 2 obs
● 2026-08-08 02:36:12
●NSdns2.o2school.co.kr2015-07-26 → 2026-08-08 · 2 obs
● 2026-08-08 02:36:12
○NSns1.o2school.co.kr2015-07-26 → 2017-04-29 · 4 obs
● 2017-04-29 07:50:28
○ 2026-02-19 04:30:00
○ 2026-08-08 02:36:12
○NSns2.o2school.co.kr2015-07-26 → 2017-04-29 · 4 obs
● 2017-04-29 07:50:28
○ 2026-02-19 04:30:00
○ 2026-08-08 02:36:12
●NSo2school.co.kr2026-02-19 → 2026-08-08 · 3 obs
● 2026-02-19 04:30:00
● 2026-08-08 02:36:12
●A14.49.42.132015-07-26 → 2026-08-08 · 2 obs
● 2026-08-08 02:36:12
🔍 DNS Trace
Analysis
Hierarchy
o2school.co.kr has four subdomains: ns2.o2school.co.kr, dns2.o2school.co.kr, dns1.o2school.co.kr and ns1.o2school.co.kr.
Name Server Role
o2school.co.kr serves as a name server for itself — o2school.co.kr is its own authoritative name server.
It is common to find dns1.o2school.co.kr and dns2.o2school.co.kr serving as name servers together with o2school.co.kr.
IP Addresses
o2school.co.kr points to a single IP number: 14.49.42.13.
Name Servers
The NS records for o2school.co.kr list three name servers: o2school.co.kr, dns1.o2school.co.kr and dns2.o2school.co.kr.
o2school.co.kr has some name servers in common with other domains such as study-q.co.kr, kcme.co.kr and uga.kr
These name servers are routinely deployed together with the name servers ns.kcme.co.kr.
o2school.co.kr has IP address 14.49.42.13, dns1.o2school.co.kr has IP address 14.63.225.15 and dns2.o2school.co.kr has IP address 14.63.220.83 — one address each.