openstudy.vn - dns.ninja
openstudy.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 216.198.79.1🇺🇸 Amazon216.198.79.0/24 EC2 Prefix | ||||||
| NS | ns1.matbao.vn ⭐ | ||||||
| A | 13.250.228.99🇸🇬 Amazon13.250.0.0/15 EC2 SIN prefix | ||||||
| PTR | ec2-13-250-228-99.ap-southeast-1.compute.amazonaws.com | ||||||
| A | 103.110.128.60🇻🇳 AXYS-VN103.110.128.0/23 | ||||||
| NS | ns2.matbao.vn | ||||||
| A | 35.198.203.127🇸🇬 Google35.198.192.0/20 | ||||||
| PTR | 127.203.198.35.bc.googleusercontent.com | ||||||
| A | 103.138.89.11🇻🇳 VNPT-AS-VN103.138.88.0/23 VNPT-NET | ||||||
| SOA | ns1.matbao.vnadmin@matbao.com 2026-05-05 #2 | ||||||
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 serial=2030986390 | ||||||
Same first word
Similar names
DNS History
12 records (3 active, 9 former)
○NSns-hold.vnnic.vn2026-02-24 → 2026-03-13 · 5 obs
● 2026-02-24 06:02:56
● 2026-03-13 13:58:00
○ 2026-04-09 00:53:28
○ 2026-07-11 11:46:06
○NSns-master.inet.vn2026-02-24 → 2026-07-11 · 2 obs
○ 2026-07-11 11:46:06
●NSns1.matbao.vn2026-05-07 → 2026-07-11 · 3 obs
● 2026-05-07 12:25:48
● 2026-07-11 11:46:06
○NSns1.vmms.vn2020-04-02 → 2020-04-02 · 3 obs
○ 2026-02-24 06:02:56
○ 2026-07-11 11:46:06
●NSns2.matbao.vn2026-05-07 → 2026-07-11 · 3 obs
● 2026-05-07 12:25:48
● 2026-07-11 11:46:06
○NSns2.vmms.vn2020-04-02 → 2020-04-02 · 3 obs
○ 2026-02-24 06:02:56
○ 2026-07-11 11:46:06
○A117.122.125.1072026-02-24 → 2026-03-13 · 5 obs
● 2026-02-24 06:02:56
● 2026-03-13 13:58:00
○ 2026-04-09 00:53:28
○ 2026-07-11 11:46:06
○A207.148.121.1852020-04-02 → 2020-04-02 · 3 obs
○ 2026-02-24 06:02:56
○ 2026-07-11 11:46:06
●A216.198.79.12026-05-07 → 2026-07-11 · 3 obs
● 2026-05-07 12:25:48
● 2026-07-11 11:46:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | f.dns-servers.vn, e.dns-servers.vn, d.dns-servers.vn, c.dns-servers.vn... | - |
| openstudy.vn | ns2.matbao.vn, ns1.matbao.vn | 2 records |
✅ Authoritative Response
Server:103.138.89.11
NS records: ns2.matbao.vn, ns1.matbao.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for openstudy.vn (unsigned zone)
⏱️ Timing
Total: 3067ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 216.198.79.1 |
| NS | 2 | ns1.matbao.vn, ns2.matbao.vn |
| SOA | 1 | ns1.matbao.vn admin.matbao.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns2.matbao.vn, ns1.matbao.vn)
Analysis
IP Addresses
openstudy.vn points to a single IP number: 216.198.79.1.
Additional host names — ealphatoken.com, thehaldi.com, atleticafuriosa.com.br and two others — share IP numbers with openstudy.vn.
Name Servers
Two name servers handle the delegation for openstudy.vn: ns1.matbao.vn and ns2.matbao.vn.
openstudy.vn shares its name server setup with other domains, including shinseivietnam.com.vn, helenacoffee.vn, bedicandles.com.vn and two others.
At least some of openstudy.vn's name servers are shared with other domains, for example nangcaukhanhmai.com, fast247.vn, laixeantoan.edu.vn and two more.
These name servers are frequently paired with the name servers ns1.matbao.com, ns2.matbao.com, ns-bak.matbao.com and two others.
ns1.matbao.vn and ns2.matbao.vn both carry two IP addresses. The A records for ns1.matbao.vn are 13.250.228.99 and 103.110.128.60; the A records for ns2.matbao.vn are 35.198.203.127 and 103.138.89.11.