mathsclass.vn - dns.ninja
mathsclass.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.75.186.15🇻🇳 VNPT-AS-VN103.75.184.0/22 Inet software one member company limited INETSOFT-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 | ||||||
| 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 | ||||||
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 2031-08-27 #13 | ||||||
Same first word
mathsclass.net.au |
mathsclass.net |
mathsclass.vn |
DNS History
7 records (5 active, 2 former)
○NSns-hold.vnnic.vn2026-04-12 → 2026-04-15 · 5 obs
● 2026-04-12 07:34:12
● 2026-04-15 21:10:42
○ 2026-04-30 13:59:18
○ 2026-08-07 04:25:34
●NSns-master.inet.vn2026-04-04 → 2026-08-07 · 5 obs
○ 2026-04-12 07:34:12
○ 2026-04-15 21:10:42
● 2026-04-30 13:59:18
● 2026-08-07 04:25:34
●NSns1.inet.vn2026-04-04 → 2026-08-07 · 5 obs
○ 2026-04-12 07:34:12
○ 2026-04-15 21:10:42
● 2026-04-30 13:59:18
● 2026-08-07 04:25:34
●NSns2.inet.vn2026-04-04 → 2026-08-07 · 5 obs
○ 2026-04-12 07:34:12
○ 2026-04-15 21:10:42
● 2026-04-30 13:59:18
● 2026-08-07 04:25:34
●NSns3.inet.vn2026-04-04 → 2026-08-07 · 5 obs
○ 2026-04-12 07:34:12
○ 2026-04-15 21:10:42
● 2026-04-30 13:59:18
● 2026-08-07 04:25:34
●A103.75.186.152026-04-04 → 2026-08-07 · 5 obs
○ 2026-04-12 07:34:12
○ 2026-04-15 21:10:42
● 2026-04-30 13:59:18
● 2026-08-07 04:25:34
○A117.122.125.1072026-04-12 → 2026-04-15 · 5 obs
● 2026-04-12 07:34:12
● 2026-04-15 21:10:42
○ 2026-04-30 13:59:18
○ 2026-08-07 04:25:34
🔍 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 |
| mathsclass.vn | ns1.inet.vn, ns2.inet.vn, ns3.inet.vn | 3 records |
✅ Authoritative Response
Server:203.113.174.10
NS records: ns1.inet.vn, ns2.inet.vn, ns3.inet.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mathsclass.vn (unsigned zone)
⏱️ Timing
Total: 1191ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.75.186.15 |
| NS | 3 | ns1.inet.vn, ns2.inet.vn... |
| SOA | 1 | ns-master.inet.vn postmaster.inet.vn |
📌 Glue Records Collected
Total: 19
In-bailiwick: 16 (a.dns-servers.vn, a.dns-servers.vn, b.dns-servers.vn...)
Out-of-bailiwick: 3 (ns1.inet.vn, ns3.inet.vn, ns2.inet.vn)
Analysis
IP Addresses
mathsclass.vn has exactly one IP address — 103.75.186.15.
www.goldenlife.vn, thamgiare.vn, deltavietnam.vn plus two other host names have IP numbers in common with mathsclass.vn.
Name Servers
Four name servers handle the delegation for mathsclass.vn: ns-master.inet.vn, ns1.inet.vn, ns2.inet.vn and ns3.inet.vn.
At least some of mathsclass.vn's name servers are shared with other domains, for example viettel3g.vn, daotaoquanly.vn, hoiucvolam.net and two more.
Host names pointing to two IP addresses:
ns1.inet.vn directs traffic to 202.92.4.25 and 2001:df7:ce00:1::7.
ns2.inet.vn directs traffic to 210.211.99.38 and 2401:5f80:2001:4::30.
ns3.inet.vn directs traffic to 203.113.174.42 and 2401:5f80:4001:4::14.
Host names resolving to a single IP address:
ns-master.inet.vn has the IP address 202.92.4.8.