tro.edu.vn - robtex.com

tro.edu.vn

DNSSEC⚠️ Not signed
A103.221.221.237🇻🇳 AZDIGI-AS-VN103.221.220.0/22 AZDIGI-VN
NSns1.zonedns.vn ⭐
A2401:c080:1400:1cd4:5400:5ff:fe80:ec33🇸🇬 AS-VULTR2401:c080:1400::/38 Vultr Assigned Prefix
A64.176.84.220🇸🇬 AS-VULTR64.176.80.0/20 Vultr Assigned Prefix
PTRns1.zonedns.vn
NSns2.zonedns.vn
A2401:c080:1400:1cd4:5400:5ff:fe80:ec33🇸🇬 AS-VULTR2401:c080:1400::/38 Vultr Assigned Prefix
A103.176.178.51🇻🇳 NHAN-HOA-AS-VN103.176.178.0/24 NINETECH-VN
NSns3.zonedns.vn
A2001:df1:3200::15🇻🇳 NHAN-HOA-AS-VN2001:df1:3200::/48 NHANHOA-VN
A103.28.36.30🇻🇳 NHAN-HOA-AS-VN103.28.36.0/22 NHANHOA-VN
NSns4.zonedns.vn
A2001:df1:3200::15🇻🇳 NHAN-HOA-AS-VN2001:df1:3200::/48 NHANHOA-VN
A103.28.39.159🇻🇳 NHAN-HOA-AS-VN103.28.36.0/22 NHANHOA-VN
MXtro.edu.vn ⭐
A103.221.221.237🇻🇳 AZDIGI-AS-VN103.221.220.0/22 AZDIGI-VN
SOAns1.zonedns.vnroot@tro.edu.vn 2025-09-11 #4

edu.vn

DNSSEC⚠️ Not signed
NSdns-master.vnnic.vn ⭐
NSa.dns-servers.vn ⚠️ Not in parent delegation
NSb.dns-servers.vn ⚠️ Not in parent delegation
NSc.dns-servers.vn ⚠️ Not in parent delegation
NSd.dns-servers.vn ⚠️ Not in parent delegation
NSe.dns-servers.vn ⚠️ Not in parent delegation
NSf.dns-servers.vn ⚠️ Not in parent delegation
NSg.dns-servers.vn ⚠️ Not in parent delegation
NSh.dns-servers.vn ⚠️ Not in parent delegation
SOAdns-master.vnnic.vnpostmaster@vnnic.vn serial=2018564748

MX for

tro.edu.vn

Same first word

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tro.pe
tro.azurewebsites.net
tro.at
tro.is
tro.bar
tro.city
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DNS History

6 records (6 active, 0 former)

NSns1.zonedns.vnns2.zonedns.vnns3.zonedns.vnns4.zonedns.vnMXtro.edu.vnA103.221.221.237
●NSns1.zonedns.vn2026-04-30 → 2026-05-09 · 2 obs
● 2026-04-30 19:42:32
● 2026-05-09 18:56:06
●NSns2.zonedns.vn2026-04-30 → 2026-05-09 · 2 obs
● 2026-04-30 19:42:32
● 2026-05-09 18:56:06
●NSns3.zonedns.vn2026-04-30 → 2026-05-09 · 2 obs
● 2026-04-30 19:42:32
● 2026-05-09 18:56:06
●NSns4.zonedns.vn2026-04-30 → 2026-05-09 · 2 obs
● 2026-04-30 19:42:32
● 2026-05-09 18:56:06
●MXtro.edu.vn2026-04-30 → 2026-05-09 · 2 obs
● 2026-04-30 19:42:32
● 2026-05-09 18:56:06
●A103.221.221.2372026-04-30 → 2026-05-09 · 2 obs
● 2026-04-30 19:42:32
● 2026-05-09 18:56:06

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
vna.dns-servers.vn, b.dns-servers.vn, g.dns-servers.vn, c.dns-servers.vn...-
tro.edu.vnns2.zonedns.vn, ns3.zonedns.vn, ns4.zonedns.vn, ns1.zonedns.vn-

✅ Authoritative Response

Server:64.176.84.220

NS records: ns2.zonedns.vn, ns3.zonedns.vn, ns4.zonedns.vn, ns1.zonedns.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tro.edu.vn (unsigned zone)

⏱️ Timing

Total: 4183ms | Queries: -

📄 Records

TypeCountSample Data
A1103.221.221.237
NS4ns4.zonedns.vn, ns3.zonedns.vn...
MX1tro.edu.vn (pri: 10)
SOA1ns1.zonedns.vn root.tro.edu.vn

Analysis

Mail Server Role

tro.edu.vn serves as a mail server for tro.edu.vn.

IP Addresses

tro.edu.vn points to a single IP: 103.221.221.237.

Other host names, for instance www.abgel.vn, daubao.azgroup.net.vn, azgroup.net.vn, solomonorganic.com and ttico.com.vn share IP numbers with tro.edu.vn.

Name Servers

tro.edu.vn is delegated to four name servers: ns1.zonedns.vn, ns2.zonedns.vn, ns3.zonedns.vn and ns4.zonedns.vn.

tro.edu.vn at least partially shares its name servers with other domains, for instance vinhthinhphat.com, quangminhpro.com, noithatxuanphu.vn, baobiphuthanh.com and xe369.com.

These name servers are commonly used alongside ns2008.nhanhoa.com.vn and ns2009.nhanhoa.com.vn.

Host names with two IP numbers

Host ns1.zonedns.vn points to 2401:c080:1400:1cd4:5400:5ff:fe80:ec33 and 64.176.84.220.

Host ns2.zonedns.vn points to 2401:c080:1400:1cd4:5400:5ff:fe80:ec33 and 103.176.178.51.

Host ns3.zonedns.vn points to 2001:df1:3200::15 and 103.28.36.30.

Host ns4.zonedns.vn points to 2001:df1:3200::15 and 103.28.39.159.

Hosts pointing to 2401:c080:1400:1cd4:5400:5ff:fe80:ec33: ns1.zonedns.vn and ns2.zonedns.vn.

Hosts pointing to 2001:df1:3200::15: ns3.zonedns.vn and ns4.zonedns.vn.

Mail Servers

tro.edu.vn is handled by a single mail server.

tro.edu.vn points to IP number 103.221.221.237.