kdtec.vn - robtex.com
kdtec.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.221.221.71🇻🇳 AZDIGI-AS-VN103.221.220.0/22 AZDIGI-VN | ||||||
| NS | ns3.azdigi.com ⭐ | ||||||
| A | 45.252.248.5🇻🇳 AZDIGI-AS-VN45.252.248.0/22 AZDIGI-VN | ||||||
| NS | ns4.azdigi.com | ||||||
| A | 103.221.222.220🇻🇳 AZDIGI-AS-VN103.221.220.0/22 AZDIGI-VN | ||||||
| MX | mail.kdtec.vn ⭐ | ||||||
| TXT | v=spf1 ip4:103.221.221.10 include:azdigi-mailgateway.com +a +mx +ip4:103.221.... | ||||||
| SOA | ns3.azdigi.comhosting-admin@azdigi.com 2026-06-23 #1 | ||||||
vn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | dns-master.vnnic.vn ⭐ | ||||||
| NS | a.dns-servers.vn | ||||||
| NS | b.dns-servers.vn | ||||||
| NS | c.dns-servers.vn | ||||||
| NS | d.dns-servers.vn | ||||||
| NS | e.dns-servers.vn | ||||||
| NS | f.dns-servers.vn | ||||||
| NS | g.dns-servers.vn | ||||||
| NS | h.dns-servers.vn | ||||||
| SOA | dns-master.vnnic.vnpostmaster@vnnic.vn 2031-04-19 #52 | ||||||
Subdomains
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSns3.azdigi.com2026-05-01 → 2026-07-27 · 2 obs
● 2026-07-27 05:17:34
●NSns4.azdigi.com2026-05-01 → 2026-07-27 · 2 obs
● 2026-07-27 05:17:34
●MXmail.kdtec.vn2026-05-01 → 2026-07-27 · 2 obs
● 2026-07-27 05:17:34
●A103.221.221.712026-05-01 → 2026-07-27 · 2 obs
● 2026-07-27 05:17:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn... | 16 records |
| kdtec.vn | ns3.azdigi.com, ns4.azdigi.com | - |
✅ Authoritative Response
Server:45.252.248.5
NS records: ns3.azdigi.com, ns4.azdigi.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for kdtec.vn (unsigned zone)
⏱️ Timing
Total: 1509ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.221.221.71 |
| NS | 2 | ns4.azdigi.com, ns3.azdigi.com |
| MX | 1 | mail.kdtec.vn (pri: 0) |
| TXT | 1 | v=spf1 ip4:103.221.221.10 include:azdigi |
| SOA | 1 | ns3.azdigi.com hosting-admin.azdigi.com |
📌 Glue Records Collected
Total: 16
In-bailiwick: 16 (a.dns-servers.vn, a.dns-servers.vn, b.dns-servers.vn...)
Analysis
Hierarchy
The parent domain of www.kdtec.vn and mail.kdtec.vn is kdtec.vn.
IP Addresses
kdtec.vn directs to one IP number, which is 103.221.221.71.
Among the host names that share IP numbers with kdtec.vn are spangocanh.com.vn, severin.vn, www.hoidongcacdonghovietnam.vn.hocnghethanhxuan.edu.vn and two others.
Name Servers
kdtec.vn has two authoritative name servers — ns3.azdigi.com and ns4.azdigi.com.
kdtec.vn has the same name server delegation as a number of other domains, such as caodang20.edu.vn, vinasay.com, suakhoaanhkiet.com and two more.
kdtec.vn has at least partial name server overlap with other domains, such as longhungphat.org, chukysokhuyenmai.com, thuytinhmiso.com and two others.
ns1.matbao.vn, ns3.azdigihost.com and ns4.azdigihost.com — plus 3 other name servers — are commonly paired with these name servers.
ns3.azdigi.com directs to 45.252.248.5 and ns4.azdigi.com directs to 103.221.222.220; each host name points to exactly one IP number.
Mail Servers
kdtec.vn routes its mail through a single mail server, mail.kdtec.vn.