dcs.edu.vn - robtex.com
dcs.edu.vn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 103.56.164.174🇻🇳 TLSOFT-AS-VN103.56.164.0/22 Proxy-registered route object | ||||||
| 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 | ||||||
| MX | mail.dcs.edu.vn ⭐ | ||||||
| A | 103.56.164.172🇻🇳 TLSOFT-AS-VN103.56.164.0/22 Proxy-registered route object | ||||||
| SOA | a.ns.hostvn.nethostmaster@hostvn.net 2026-04-09 #4 | ||||||
edu.vn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | dns-master.vnnic.vn ⭐ | ||||||
| NS | a.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | b.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | c.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | d.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | e.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | f.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | g.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| NS | h.dns-servers.vn ⚠️ Not in parent delegation | ||||||
| SOA | dns-master.vnnic.vnpostmaster@vnnic.vn serial=2018564509 | ||||||
Subdomains
mail.dcs.edu.vn |
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSa.ns.hostvn.net2026-04-30 → 2026-05-08 · 2 obs
● 2026-05-08 13:53:12
●NSb.ns.hostvn.net2026-04-30 → 2026-05-08 · 2 obs
● 2026-05-08 13:53:12
●MXmail.dcs.edu.vn2026-04-30 → 2026-05-08 · 2 obs
● 2026-05-08 13:53:12
●A103.56.164.1742026-04-30 → 2026-05-08 · 2 obs
● 2026-05-08 13:53:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| vn | f.dns-servers.vn, e.dns-servers.vn, h.dns-servers.vn, c.dns-servers.vn... | - |
| dcs.edu.vn | a.ns.hostvn.net, b.ns.hostvn.net | - |
✅ Authoritative Response
Server:185.136.99.112
NS records: a.ns.hostvn.net, b.ns.hostvn.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dcs.edu.vn (unsigned zone)
⏱️ Timing
Total: 2343ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 103.56.164.174 |
| NS | 2 | a.ns.hostvn.net, b.ns.hostvn.net |
| MX | 1 | mail.dcs.edu.vn (pri: 10) |
| SOA | 1 | a.ns.hostvn.net hostmaster.hostvn.net |
Analysis
Hierarchy
The parent of mail.dcs.edu.vn is dcs.edu.vn.
IP Addresses
dcs.edu.vn points to a single IP: 103.56.164.174.
Other host names such as api.dcse.vn and dcse.vn share IP numbers with dcs.edu.vn.
Name Servers
Two name servers a.ns.hostvn.net and b.ns.hostvn.net handle delegation for dcs.edu.vn.
dcs.edu.vn uses the same name server setup as other domains, for example traoduyen.com, hangy.vn, nhattin.edu.vn, pianodongnai.com and kiemdinhtrunghoc.edu.vn.
dcs.edu.vn shares name servers with other domains at least partially, for instance tscservices.vn, chohoaviet.com and tq-linde.vn.
These name servers commonly accompany ns1.anycast.vn, ns2.anycast.vn, ns3.anycast.vn and ns4.anycast.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
Mail Servers
dcs.edu.vn is handled by a single mail server, mail.dcs.edu.vn.
mail.dcs.edu.vn points to a single IP: 103.56.164.172.