school-os.net - robtex.com
school-os.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 119.64.74.78🇰🇷 POWERVIS-AS-KR119.64.0.0/14 Proxy-Registered Route Object by LG Dacom(AS3786) | ||||||
| NS | ns1.dothome.co.kr ⭐ | ||||||
| A | 61.100.188.251🇰🇷 HOSTWAY-AS-KR61.100.188.0/24 SejongTelecom.co.ltd | ||||||
| NS | ns2.dothome.co.kr | ||||||
| A | 61.100.188.252🇰🇷 HOSTWAY-AS-KR61.100.188.0/24 SejongTelecom.co.ltd | ||||||
| NS | ns3.dothome.co.kr | ||||||
| A | 14.63.172.74🇰🇷 KT-NET14.56.0.0/13 Korea Telecom | ||||||
| MX | mail.school-os.net ⭐ | ||||||
| A | 119.64.74.78🇰🇷 POWERVIS-AS-KR119.64.0.0/14 Proxy-Registered Route Object by LG Dacom(AS3786) | ||||||
| TXT | v=spf1 mx ~all | ||||||
| SOA | ns1.dothome.co.krabuse@anysecure.com serial=1626340278 | ||||||
net
| 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=1777782731 | ||||||
Subdomains
mail.school-os.net |
Same first word
school-os.net |
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.dothome.co.kr2026-03-23 → 2026-05-03 · 2 obs
● 2026-05-03 04:52:32
●NSns2.dothome.co.kr2026-03-23 → 2026-05-03 · 2 obs
● 2026-05-03 04:52:32
●NSns3.dothome.co.kr2026-03-23 → 2026-05-03 · 2 obs
● 2026-05-03 04:52:32
●MXmail.school-os.net2026-03-23 → 2026-05-03 · 2 obs
● 2026-05-03 04:52:32
●A119.64.74.782026-03-23 → 2026-05-03 · 2 obs
● 2026-05-03 04:52:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | m.gtld-servers.net, d.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net... | - |
| school-os.net | ns1.dothome.co.kr, ns2.dothome.co.kr, ns3.dothome.co.kr | - |
✅ Authoritative Response
Server:61.100.188.252
NS records: ns1.dothome.co.kr, ns2.dothome.co.kr, ns3.dothome.co.kr
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for school-os.net (unsigned zone)
⏱️ Timing
Total: 1190ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 119.64.74.78 |
| NS | 3 | ns2.dothome.co.kr, ns3.dothome.co.kr... |
| MX | 1 | mail.school-os.net (pri: 10) |
| TXT | 1 | v=spf1 mx ~all |
| SOA | 1 | ns1.dothome.co.kr abuse.anysecure.com |
Analysis
Hierarchy
The parent of mail.school-os.net is school-os.net.
IP Addresses
school-os.net points to a single IP number: 119.64.74.78.
Other host names, for instance mail.school-os.net, share IP numbers with school-os.net.
Name Servers
The domain school-os.net is delegated to three name servers: ns1.dothome.co.kr, ns2.dothome.co.kr and ns3.dothome.co.kr.
school-os.net shares name servers with other domains at least partially, for instance xn--9d0b4b70vnol89ezvdmykd32abaw.kr, dnic.co.kr, midashelp.com, midasgtsnx.com and ssets.co.kr.
Host names with a single IP number:
ns1.dothome.co.kr points to 61.100.188.251.
ns2.dothome.co.kr points to 61.100.188.252.
ns3.dothome.co.kr points to 14.63.172.74.
Mail Servers
The mail server for school-os.net is mail.school-os.net.
Host name mail.school-os.net resolves to IP 119.64.74.78.