dhsy.kr - robtex.com
dhsy.kr
| DNSSEC | ⚠️ Not signed | ||||||
| A | 221.139.49.4🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| NS | ns1.aramschool.co.kr ⭐ | ||||||
| NS | ns1.4adtech.com ⚠️ Not in zone NS records | ||||||
| A | 221.139.49.17🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| NS | ns2.4adtech.com ⚠️ Not in zone NS records | ||||||
| MX | mail.dhsy.kr ⭐ | ||||||
| A | 221.139.49.4🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| TXT | v=spf1 ip4:221.139.49.4 ip4:221.139.49.3 ~all | ||||||
| SOA | ns1.aramschool.co.krsupport@aramschool.co.kr 2026-04-01 #3 | ||||||
kr
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | g.dns.kr ⭐ | ||||||
| NS | b.dns.kr | ||||||
| NS | c.dns.kr | ||||||
| NS | d.dns.kr | ||||||
| NS | e.dns.kr | ||||||
| NS | f.dns.kr | ||||||
| SOA | g.dns.krdomain-manager@nic.or.kr serial=2606230939 | ||||||
Subdomains
mail.dhsy.kr |
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.4adtech.com2026-02-15 → 2026-06-23 · 2 obs
● 2026-06-23 11:42:12
●NSns1.aramschool.co.kr2026-02-15 → 2026-06-23 · 2 obs
● 2026-06-23 11:42:12
●NSns2.4adtech.com2026-02-15 → 2026-06-23 · 2 obs
● 2026-06-23 11:42:12
●MXmail.dhsy.kr2026-02-15 → 2026-06-23 · 2 obs
● 2026-06-23 11:42:12
●A221.139.49.42026-02-15 → 2026-06-23 · 2 obs
● 2026-06-23 11:42:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| kr | b.dns.kr, c.dns.kr, d.dns.kr, e.dns.kr... | - |
| dhsy.kr | ns2.4adtech.com, ns1.4adtech.com | - |
✅ Authoritative Response
Server:221.139.49.17
NS records: ns2.4adtech.com, ns1.4adtech.com
🔒 DNSSEC Status
❌ Bogus (DNSSEC validation failed)
Validation error at kr: Error: DNS query timeout: 210.101.60.1 for DNSKEY kr
⏱️ Timing
Total: 5095ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 221.139.49.4 |
| MX | 1 | mail.dhsy.kr (pri: 10) |
| TXT | 1 | v=spf1 ip4:221.139.49.4 ip4:221.139.49.3 |
| SOA | 1 | ns1.aramschool.co.kr support.aramschool. |
Analysis
Hierarchy
dhsy.kr serves as the parent of mail.dhsy.kr.
IP Addresses
dhsy.kr resolves to one IP address: 221.139.49.4.
mail.goldenkr.com, damoalock.com, mail.iqprs.com and two other host names share IP numbers with dhsy.kr.
Name Servers
Three name servers are authoritative for dhsy.kr: ns1.4adtech.com, ns2.4adtech.com and ns1.aramschool.co.kr.
dhsy.kr has at least partial name server overlap with other domains, such as iksan24.net, daincnt.co.kr, xn--2q1b08z.com and two others.
ns2.aramschool.co.kr, ns1.nurihosting.com and ns1.ehompy.co.kr — plus 7 other name servers — are commonly paired with these name servers.
Hosts with just one IP address:
ns1.4adtech.com points to the IP address 221.139.49.17.
Mail Servers
Mail for dhsy.kr is handled by a single mail server, mail.dhsy.kr.
There is one IP number for mail.dhsy.kr: 221.139.49.4.