p20study.vn - robtex.com
p20study.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 115.146.122.123🇻🇳 CMC-2115.146.122.0/24 CMCTELECOM-VN | ||||||
| NS | a.ns.hostvn.net ⭐ | ||||||
| A | 185.136.96.112🇺🇸 CLOUDNSNET185.136.96.0/24 Cloud DNS Ltd | ||||||
| PTR | a.ns.hostvn.net | ||||||
| A | 185.136.97.112CLOUDNSNET185.136.97.0/24 Cloud DNS Ltd | ||||||
| PTR | a.ns.hostvn.net | ||||||
| NS | b.ns.hostvn.net | ||||||
| A | 185.136.98.112🇺🇸 CLOUDNSNET185.136.98.0/24 Cloud DNS Ltd | ||||||
| PTR | b.ns.hostvn.net | ||||||
| A | 185.136.99.112CLOUDNSNET185.136.99.0/24 Cloud DNS Ltd | ||||||
| PTR | b.ns.hostvn.net | ||||||
| SOA | a.ns.hostvn.nethostmaster@hostvn.net 2025-12-12 #4 | ||||||
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=2030757799 | ||||||
Same first word
p20study.vn |
DNS History
3 records (3 active, 0 former)
●NSa.ns.hostvn.net2026-05-01 → 2026-05-11 · 2 obs
● 2026-05-11 05:45:46
●NSb.ns.hostvn.net2026-05-01 → 2026-05-11 · 2 obs
● 2026-05-11 05:45:46
●A115.146.122.1232026-05-01 → 2026-05-11 · 2 obs
● 2026-05-11 05:45:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn... | - |
| p20study.vn | b.ns.hostvn.net, a.ns.hostvn.net | - |
✅ Authoritative Response
Server:185.136.98.112
NS records: b.ns.hostvn.net, a.ns.hostvn.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for p20study.vn (unsigned zone)
⏱️ Timing
Total: 834ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 115.146.122.123 |
| NS | 2 | a.ns.hostvn.net, b.ns.hostvn.net |
| SOA | 1 | a.ns.hostvn.net hostmaster.hostvn.net |
Analysis
IP Addresses
p20study.vn points to a single IP: 115.146.122.123.
Other host names, for instance olm.victoryschoolbmt.edu.vn, thcsnguyentrai-quangninh.edu.vn, trungtamunix.edu.vn, thcsdamha1.edu.vn and thpthiephoaso6.edu.vn share IP numbers with p20study.vn.
Name Servers
p20study.vn's delegation is to two name servers a.ns.hostvn.net and b.ns.hostvn.net.
p20study.vn shares the same name server configuration as other domains, such as butbanner.com, ytnh.com.vn, cauthangnghethuat.vn, luxyhair.vn and digi4work.com.
p20study.vn shares name servers with other domains to at least some extent, for instance chohoaviet.com and tq-linde.vn.
Host names with two IP numbers: a.ns.hostvn.net points to 185.136.96.112 and 185.136.97.112; b.ns.hostvn.net points to 185.136.98.112 and 185.136.99.112