h-focus.net - robtex.com
h-focus.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 121.125.73.51🇰🇷 SKB-NET121.125.0.0/16 SK Broadband | ||||||
| NS | ns1.aramschool.co.kr ⭐ | ||||||
| A | 221.139.49.17🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| NS | ns1.uu.co.kr ⚠️ Not in zone NS records | ||||||
| A | 221.139.49.17🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| NS | ns2.uu.co.kr ⚠️ Not in zone NS records | ||||||
| A | 121.125.73.38🇰🇷 SKB-NET121.125.0.0/16 SK Broadband | ||||||
| MX | mail.h-focus.net ⭐ | ||||||
| A | 121.125.73.51🇰🇷 SKB-NET121.125.0.0/16 SK Broadband | ||||||
| TXT | v=spf1 ip4:121.125.73.51 ip4:221.139.49.3 ~all | ||||||
| SOA | ns1.aramschool.co.krsupport@aramschool.co.kr 2024-06-28 #1 | ||||||
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=1777110726 | ||||||
Subdomains
mail.h-focus.net |
Same first word
h-focus.net |
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.aramschool.co.kr2026-03-16 → 2026-04-25 · 2 obs
● 2026-04-25 09:58:08
●MXmail.h-focus.net2026-03-16 → 2026-04-25 · 2 obs
● 2026-04-25 09:58:08
●A121.125.73.512026-03-16 → 2026-04-25 · 2 obs
● 2026-04-25 09:58:08
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | l.gtld-servers.net, e.gtld-servers.net, h.gtld-servers.net, k.gtld-servers.net... | - |
| h-focus.net | ns1.uu.co.kr, ns2.uu.co.kr | - |
✅ Authoritative Response
Server:121.125.73.38
NS records: ns1.uu.co.kr, ns2.uu.co.kr
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for h-focus.net (unsigned zone)
⏱️ Timing
Total: 1531ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 121.125.73.51 |
| MX | 1 | mail.h-focus.net (pri: 10) |
| TXT | 1 | v=spf1 ip4:121.125.73.51 ip4:221.139.49. |
| SOA | 1 | ns1.aramschool.co.kr support.aramschool. |
Analysis
Hierarchy
The parent of mail.h-focus.net is h-focus.net.
IP Addresses
h-focus.net points to an IP address: 121.125.73.51.
other host names include airnews.co.kr, ged.or.kr, mail.taeboksolution.com, oxq.kr and mail.myungmoonhaksa.co.kr; they share IP numbers with h-focus.net.
Name Servers
h-focus.net is delegated to three name servers ns1.aramschool.co.kr, ns1.uu.co.kr and ns2.uu.co.kr.
h-focus.net at least partially shares name servers with other domains, for instance nebust.com, cheesedesign.kr, eblueganho.co.kr, ggsolution.kr and lichtzen.com.
these name servers are commonly used with ns1.nurihosting.com, ns2.aramschool.co.kr, ns1.ehompy.co.kr, ns2.ehompy.co.kr, ns1.web-store.kr, ns2.web-store.kr, ns1.amondsmaster.co.kr, ns2.amondsmaster.co.kr, ns1.yncmedia.kr and ns2.yncmedia.kr.
Host names with a single IP:
ns1.aramschool.co.kr points to: 221.139.49.17
ns1.uu.co.kr points to: 221.139.49.17
ns2.uu.co.kr points to: 121.125.73.38
Names pointing to 221.139.49.17: ns1.aramschool.co.kr, ns1.uu.co.kr
Mail Servers
h-focus.net is handled by a single mail server, mail.h-focus.net.
The host name mail.h-focus.net points to IP 121.125.73.51.