duocsidaihoc.com - robtex.com
duocsidaihoc.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.56.162.220🇻🇳 VNPT-AS-VN103.56.160.0/22 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 | ||||||
| TXT | google-site-verification=6OQeVW1iw4i3iOQfqaBGS3lKoLLYj7-gRcOl-d7RxL4 | ||||||
| SOA | ns-master.inet.vnpostmaster@inet.vn 2015-07-28 #0 | ||||||
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1778332861 | ||||||
Same first word
duocsidaihoc.com |
DNS History
11 records (5 active, 6 former)
●NSns-master.inet.vn2026-04-30 → 2026-05-09 · 3 obs
● 2026-04-30 19:37:08
● 2026-05-09 13:43:18
●NSns1.inet.vn2026-04-30 → 2026-05-09 · 3 obs
● 2026-04-30 19:37:08
● 2026-05-09 13:43:18
○NSns1.matbao.com2018-05-11 → 2026-04-10 · 4 obs
● 2026-04-10 16:17:22
○ 2026-04-30 19:37:08
○ 2026-05-09 13:43:18
○NSns1.matbao.vn2026-04-10 → 2026-04-10 · 4 obs
● 2026-04-10 16:17:22
○ 2026-04-30 19:37:08
○ 2026-05-09 13:43:18
●NSns2.inet.vn2026-04-30 → 2026-05-09 · 3 obs
● 2026-04-30 19:37:08
● 2026-05-09 13:43:18
○NSns2.matbao.com2018-05-11 → 2026-04-10 · 4 obs
● 2026-04-10 16:17:22
○ 2026-04-30 19:37:08
○ 2026-05-09 13:43:18
○NSns2.matbao.vn2026-04-10 → 2026-04-10 · 4 obs
● 2026-04-10 16:17:22
○ 2026-04-30 19:37:08
○ 2026-05-09 13:43:18
●NSns3.inet.vn2026-04-30 → 2026-05-09 · 3 obs
● 2026-04-30 19:37:08
● 2026-05-09 13:43:18
○A103.56.161.592026-04-10 → 2026-04-10 · 4 obs
● 2026-04-10 16:17:22
○ 2026-04-30 19:37:08
○ 2026-05-09 13:43:18
●A103.56.162.2202026-04-30 → 2026-05-09 · 3 obs
● 2026-04-30 19:37:08
● 2026-05-09 13:43:18
○A103.74.118.1902018-05-11 → 2018-05-11 · 3 obs
○ 2026-04-10 16:17:22
○ 2026-05-09 13:43:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| duocsidaihoc.com | ns1.inet.vn, ns2.inet.vn, ns3.inet.vn | - |
✅ Authoritative Response
Server:210.211.99.38
NS records: ns1.inet.vn, ns2.inet.vn, ns3.inet.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for duocsidaihoc.com (unsigned zone)
⏱️ Timing
Total: 3767ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.56.162.220 |
| NS | 3 | ns3.inet.vn, ns2.inet.vn... |
| TXT | 1 | google-site-verification=6OQeVW1iw4i3iOQ |
| SOA | 1 | ns-master.inet.vn postmaster.inet.vn |
Analysis
IP Addresses
duocsidaihoc.com points to a single IP address: 103.56.162.220.
Other host names such as huthamcaugiare.com, fytopharma.com.vn, eyefresh.vn, truyenhinhanvien.vn and medzavy.com share IP numbers with duocsidaihoc.com.
Name Servers
duocsidaihoc.com is delegated to four name servers: ns-master.inet.vn, ns1.inet.vn, ns2.inet.vn and ns3.inet.vn.
At least part of the name servers for duocsidaihoc.com are shared with other domains, for instance tourmuine.vn, xedapthethao.vn, ezisolutions.vn, pcggate.com.vn and vietnam2030.vn.
Two IP numbers per host:
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.
One IP number per host:
ns-master.inet.vn points to 202.92.4.8.