dtstudy.vn - robtex.com
dtstudy.vn
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=2030753578 | ||||||
Subdomains
www.dtstudy.vn |
Same first word
Similar names
DNS History
9 records (9 active, 0 former)
●NSns1.dotvndns.vn2020-03-22 → 2026-05-09 · 2 obs
● 2026-05-09 23:16:30
●NSns1.pavietnam.vn2020-03-22 → 2026-05-09 · 2 obs
● 2026-05-09 23:16:30
●NSns2.dotvndns.vn2026-05-01 → 2026-05-09 · 3 obs
● 2026-05-01 08:29:36
● 2026-05-09 23:16:30
●NSns2.pavietnam.vn2020-03-22 → 2026-05-09 · 2 obs
● 2026-05-09 23:16:30
●NSnsbak.dotvndns.com2020-03-22 → 2026-05-09 · 2 obs
● 2026-05-09 23:16:30
●A113.161.48.882020-03-22 → 2026-05-09 · 2 obs
● 2026-05-09 23:16:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | c.dns-servers.vn, e.dns-servers.vn, a.dns-servers.vn, h.dns-servers.vn... | - |
| dtstudy.vn | ns1.dotvndns.vn, nsbak.dotvndns.com, ns2.dotvndns.vn | 4 records |
✅ Authoritative Response
Server:112.213.89.22
NS records: ns1.dotvndns.vn, nsbak.dotvndns.com, ns2.dotvndns.vn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dtstudy.vn (unsigned zone)
⏱️ Timing
Total: 2034ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 113.161.48.88 |
| NS | 3 | ns1.pavietnam.vn, ns2.pavietnam.vn... |
| MX | 3 | mx3.zoho.com (pri: 30), mx2.zoho.com (pri: 20)... |
| TXT | 1 | google-site-verification=CWHT4AAxss3c3ti |
| SOA | 1 | ns1.pavietnam.vn hostmaster.dtstudy.vn |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns2.dotvndns.vn, ns1.dotvndns.vn, ns2.dotvndns.vn...)
Analysis
Hierarchy
www.dtstudy.vn is a child of dtstudy.vn.
IP Addresses
dtstudy.vn resolves to one IP number: 113.161.48.88.
Name Servers
dtstudy.vn is delegated to five name servers: nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn, ns1.pavietnam.vn and ns2.pavietnam.vn.
dtstudy.vn at least partially shares name servers with other domains, including sungroupvietnam.vn, thegioimypham24h.com, hoaphatcantho.com, cocobay.vn and longhoangsecurity.com.
These name servers are often used with nsbak.pavietnam.net and ns3.dotvndns.vn.
Two IPs per name:
nsbak.dotvndns.com points to 2406:9c80::9000:302 and 112.213.89.22
ns1.dotvndns.vn points to 2406:9c80::66 and 112.213.89.3
ns2.dotvndns.vn points to 2406:9c80::9000:111 and 222.255.121.247
ns1.pavietnam.vn points to 2406:9c80::66 and 112.213.89.3
ns2.pavietnam.vn points to 2406:9c80::9000:111 and 222.255.121.247
Names pointing to 2406:9c80::66: ns1.dotvndns.vn and ns1.pavietnam.vn
Names pointing to 112.213.89.3: ns1.dotvndns.vn and ns1.pavietnam.vn
Names pointing to 2406:9c80::9000:111: ns2.dotvndns.vn and ns2.pavietnam.vn
Names pointing to 222.255.121.247: ns2.dotvndns.vn and ns2.pavietnam.vn
Mail Servers
Three mail servers handle dtstudy.vn: mx2.zoho.com, mx3.zoho.com and mx.zoho.com.
dtstudy.vn shares at least some mail servers with other domains, for example pingyl.com, hovers.ai, naankabob.ca, ezon.in and bjoernveit.com.
Host names with two IP numbers:
The host name mx.zoho.com points to 136.143.191.44 and 204.141.33.44.
Host names with one IP number:
The host names mx2.zoho.com and mx3.zoho.com point to 204.141.33.44 and 136.143.191.44 respectively.
Host names that point to 136.143.191.44: mx.zoho.com and mx3.zoho.com.
Host names that point to 204.141.33.44: mx.zoho.com and mx2.zoho.com.