cmac.kr - robtex.com
cmac.kr
| DNSSEC | ⚠️ Not signed | ||||||
| A | 221.139.49.18🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| NS | ns1.aramschool.co.kr ⭐ | ||||||
| A | 221.139.49.17🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| NS | ns1.socialnetworkad.co.kr ⚠️ Not in zone NS records | ||||||
| A | 221.139.49.17🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| NS | ns2.socialnetworkad.co.kr ⚠️ Not in zone NS records | ||||||
| A | 121.125.73.38🇰🇷 SKB-NET121.125.0.0/16 SK Broadband | ||||||
| MX | mail.cmac.kr ⭐ | ||||||
| A | 221.139.49.18🇰🇷 SKB-NET221.138.0.0/15 SK Broadband | ||||||
| TXT | v=spf1 ip4:221.139.49.26 ip4:221.139.49.3 ~all | ||||||
| SOA | ns1.aramschool.co.krsupport@aramschool.co.kr 2024-06-28 #1 | ||||||
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=2606040734 | ||||||
Subdomains
mail.cmac.kr |
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns1.aramschool.co.kr2026-02-26 → 2026-06-04 · 2 obs
● 2026-06-04 06:31:50
●NSns1.socialnetworkad.co.kr2026-02-26 → 2026-06-04 · 2 obs
● 2026-06-04 06:31:50
●NSns2.socialnetworkad.co.kr2026-02-26 → 2026-06-04 · 2 obs
● 2026-06-04 06:31:50
●MXmail.cmac.kr2026-02-26 → 2026-06-04 · 2 obs
● 2026-06-04 06:31:50
●A221.139.49.182026-02-26 → 2026-06-04 · 2 obs
● 2026-06-04 06:31:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| kr | g.dns.kr, f.dns.kr, e.dns.kr, b.dns.kr... | - |
| cmac.kr | ns1.socialnetworkad.co.kr, ns2.socialnetworkad.co.kr | - |
✅ Authoritative Response
Server:221.139.49.17
NS records: ns1.socialnetworkad.co.kr, ns2.socialnetworkad.co.kr
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cmac.kr (unsigned zone)
⏱️ Timing
Total: 1664ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 221.139.49.18 |
| MX | 1 | mail.cmac.kr (pri: 10) |
| TXT | 1 | v=spf1 ip4:221.139.49.26 ip4:221.139.49. |
| SOA | 1 | ns1.aramschool.co.kr support.aramschool. |
Analysis
Hierarchy
cmac.kr is a parent domain of mail.cmac.kr.
IP Addresses
cmac.kr points to a single IP number: 221.139.49.18.
Additional host names — withpension.com, namurang.net, xn--ob0b64r1khi5e8lblkr3k.com and two others — share IP numbers with cmac.kr.
Name Servers
Three name servers are authoritative for cmac.kr: ns1.aramschool.co.kr, ns1.socialnetworkad.co.kr and ns2.socialnetworkad.co.kr.
cmac.kr shares at least some of its name servers with other domains, including zigoo.org, ssmecha.net, bk-korea.com and two others.
These name servers are frequently used alongside ns2.aramschool.co.kr, ns1.nurihosting.com, ns1.namuweb.co.kr and seven others.
ns1.aramschool.co.kr, ns1.socialnetworkad.co.kr and ns2.socialnetworkad.co.kr each resolve to one IP address: ns1.aramschool.co.kr and ns1.socialnetworkad.co.kr both point to 221.139.49.17, while ns2.socialnetworkad.co.kr points to 121.125.73.38.
These two host names — ns1.aramschool.co.kr and ns1.socialnetworkad.co.kr — each point to 221.139.49.17 IP addresses.
Mail Servers
cmac.kr has one mail server: mail.cmac.kr.
There is one IP number for mail.cmac.kr: 221.139.49.18.