cdb.edu.vn - robtex.com
cdb.edu.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 117.122.125.107🇻🇳 VNNIC117.122.124.0/22 -AS-VN | ||||||
| PTR | biz.vnnic.vn | ||||||
| PTR | speakers.vnnic.vn | ||||||
| NS | ns-hold.vnnic.vn ⚠️ Not in zone NS records | ||||||
| A | 117.122.125.107🇻🇳 VNNIC117.122.124.0/22 -AS-VN | ||||||
| PTR | biz.vnnic.vn | ||||||
| PTR | speakers.vnnic.vn | ||||||
edu.vn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | dns-master.vnnic.vn ⭐ | ||||||
| NS | a.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | b.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | c.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | d.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | e.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | f.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | g.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | h.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| SOA | dns-master.vnnic.vnpostmaster@vnnic.vn serial=2018564896 | ||||||
Subdomains
www.cdb.edu.vn |
Same first word
Similar names
DNS History
13 records (2 active, 11 former)
○NSns1.sdns.vn2020-02-05 → 2026-05-08 · 3 obs
● 2026-05-08 08:47:08
○ 2026-05-10 22:30:04
○NSns2.sdns.vn2020-02-05 → 2026-05-08 · 3 obs
● 2026-05-08 08:47:08
○ 2026-05-10 22:30:04
○NSns3.sdns.vn2020-02-05 → 2026-05-08 · 3 obs
● 2026-05-08 08:47:08
○ 2026-05-10 22:30:04
○MXalt1.aspmx.l.google.com2026-05-01 → 2026-05-08 · 4 obs
● 2026-05-01 06:14:48
● 2026-05-08 08:47:08
○ 2026-05-10 22:30:04
○MXalt2.aspmx.l.google.com2026-05-01 → 2026-05-08 · 4 obs
● 2026-05-01 06:14:48
● 2026-05-08 08:47:08
○ 2026-05-10 22:30:04
○MXalt3.aspmx.l.google.com2026-05-01 → 2026-05-08 · 4 obs
● 2026-05-01 06:14:48
● 2026-05-08 08:47:08
○ 2026-05-10 22:30:04
○MXalt4.aspmx.l.google.com2026-05-01 → 2026-05-08 · 4 obs
● 2026-05-01 06:14:48
● 2026-05-08 08:47:08
○ 2026-05-10 22:30:04
○MXaspmx.l.google.com2026-05-01 → 2026-05-08 · 4 obs
● 2026-05-01 06:14:48
● 2026-05-08 08:47:08
○ 2026-05-10 22:30:04
○MXe.vinahost.vn2020-02-05 → 2020-02-05 · 3 obs
○ 2026-05-01 06:14:48
○ 2026-05-10 22:30:04
●A117.122.125.1072026-05-10 → 2026-05-10 · 2 obs
● 2026-05-10 22:30:04
○A125.212.243.1102020-02-05 → 2020-02-05 · 3 obs
○ 2026-05-01 06:14:48
○ 2026-05-10 22:30:04
○A125.212.243.1312026-05-01 → 2026-05-08 · 4 obs
● 2026-05-01 06:14:48
● 2026-05-08 08:47:08
○ 2026-05-10 22:30:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | d.dns-servers.vn, b.dns-servers.vn, f.dns-servers.vn, e.dns-servers.vn... | - |
| cdb.edu.vn | ns-hold.vnnic.vn | - |
✅ Authoritative Response
Server:117.122.125.107
NS records: ns-hold.vnnic.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cdb.edu.vn (unsigned zone)
⏱️ Timing
Total: 2003ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 117.122.125.107 |
Analysis
Hierarchy
cdb.edu.vn is a parent of www.cdb.edu.vn.
IP Addresses
cdb.edu.vn points to a single IP number: 117.122.125.107.
Other host names, for instance www.fusin.vn, ba796a63-7afd-42fe-abec-403385f65803.truonghoc.edu.vn, www.hocvienstartup.vn, fpltaynguyen.edu.vn and hdsline.com.vn share IP numbers with cdb.edu.vn.
Name Servers
A single name server, ns-hold.vnnic.vn, handles the delegation for cdb.edu.vn.
cdb.edu.vn shares the same name server setup as other domains, including kbangk.vn, waterhero.vn, xetaxibaria.vn, pmu5.com.vn and cafeso.com.vn.
cdb.edu.vn shares name servers with other domains at least partially, for example aichat247.vn.
ns-hold.vnnic.vn points to a single IP: 117.122.125.107.