csb.edu.vn - robtex.com
csb.edu.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.221.221.39🇻🇳 AZDIGI-AS-VN103.221.220.0/22 AZDIGI-VN | ||||||
| NS | ns-master.inet.vn ⭐ | ||||||
| A | 202.92.4.8🇻🇳 VNPT-AS-VN202.92.4.0/22 INET-VN | ||||||
| NS | ns1.inet.vn | ||||||
| A | 2001:df7:ce00:1::7🇻🇳 VNPT-AS-VN2001:df7:ce00::/48 INETSOFT-VN Inet software one member company limited | ||||||
| A | 202.92.4.25🇻🇳 VNPT-AS-VN202.92.4.0/22 INET-VN | ||||||
| NS | ns2.inet.vn | ||||||
| A | 2401:5f80:2001:4::30🇻🇳 VTDC-AS-VN2401:5f80:2000::/36 VTDC-VN | ||||||
| A | 210.211.99.38🇻🇳 VTDC-AS-VN210.211.99.0/24 Proxy-registered route object | ||||||
| NS | ns3.inet.vn ⚠️ Not in parent delegation | ||||||
| A | 2401:5f80:4001:4::14🇻🇳 VTDC-AS-VN2401:5f80:4000::/36 VTDC-VN | ||||||
| A | 203.113.174.42🇻🇳 VTDC-AS-VN203.113.174.0/23 VIETTEL-VN | ||||||
| SOA | ns-master.inet.vnpostmaster@inet.vn 2015-07-28 #0 | ||||||
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=2018564612 | ||||||
Previously MX for
csb.edu.vn |
Subdomains
www.csb.edu.vn |
Same first word
Similar names
DNS History
9 records (5 active, 4 former)
●NSns-master.inet.vn2026-04-30 → 2026-05-08 · 3 obs
● 2026-04-30 20:06:58
● 2026-05-08 23:56:22
●NSns1.inet.vn2026-04-30 → 2026-05-08 · 3 obs
● 2026-04-30 20:06:58
● 2026-05-08 23:56:22
●NSns2.inet.vn2026-04-30 → 2026-05-08 · 3 obs
● 2026-04-30 20:06:58
● 2026-05-08 23:56:22
●NSns3.inet.vn2026-04-30 → 2026-05-08 · 3 obs
● 2026-04-30 20:06:58
● 2026-05-08 23:56:22
○NSns5.hawkhost.com2018-05-08 → 2018-05-08 · 3 obs
○ 2026-04-30 20:06:58
○ 2026-05-08 23:56:22
○NSns6.hawkhost.com2018-05-08 → 2018-05-08 · 3 obs
○ 2026-04-30 20:06:58
○ 2026-05-08 23:56:22
○MXcsb.edu.vn2018-05-08 → 2018-05-08 · 3 obs
○ 2026-04-30 20:06:58
○ 2026-05-08 23:56:22
●A103.221.221.392026-04-30 → 2026-05-08 · 3 obs
● 2026-04-30 20:06:58
● 2026-05-08 23:56:22
○A198.252.103.142018-05-08 → 2018-05-08 · 3 obs
○ 2026-04-30 20:06:58
○ 2026-05-08 23:56:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn... | - |
| csb.edu.vn | ns2.inet.vn, ns1.inet.vn | - |
✅ Authoritative Response
Server:202.92.4.25
NS records: ns2.inet.vn, ns1.inet.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for csb.edu.vn (unsigned zone)
⏱️ Timing
Total: 1548ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.221.221.39 |
| NS | 3 | ns1.inet.vn, ns2.inet.vn... |
| SOA | 1 | ns-master.inet.vn postmaster.inet.vn |
Analysis
Hierarchy
www.csb.edu.vn has csb.edu.vn as its parent.
IP Addresses
csb.edu.vn maps to IP address 103.221.221.39.
Other host names, for instance www.xemayhuyphuong.vn.noithatvietgia.vn, thaybinhoto.vn, www.tecohcm.org.vn, www.ketoantainhan.vn and isac.vn share IP numbers with csb.edu.vn.
Name Servers
csb.edu.vn is delegated to four name servers: ns-master.inet.vn, ns1.inet.vn, ns2.inet.vn and ns3.inet.vn.
csb.edu.vn at least partially shares name servers with other domains such as anmocyen.vn, nguyentanquan.com, vwvungtau.com.vn, aquaswim.vn and pvfcdalat.vn.
These name servers are commonly used with hcmc3.saigonnet.vn and hcmc4.saigonnet.vn.
Host names with two IP numbers:
ns1.inet.vn points to: 2001:df7:ce00:1::7 and 202.92.4.25.
ns2.inet.vn points to: 2401:5f80:2001:4::30 and 210.211.99.38.
ns3.inet.vn points to: 2401:5f80:4001:4::14 and 203.113.174.42.
Host names with one IP number:
ns-master.inet.vn points to: 202.92.4.8.