`tridau.com.vn`

DNSSEC	⚠️ Not signed
A	27.71.232.75^{🇻🇳 VIETEL-AS-AP27.71.232.0/21 Proxy-registered route object}
NS	`ns1.dotvndns.vn` ⭐
		A	2406:9c80::66^{🇻🇳 SUPERDATA2406:9c80::/48 -VN}
			PTR	`ns1.dotvndns.vn`
		A	112.213.89.3^{🇻🇳 SUPERDATA112.213.89.0/24 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi}
			PTR	`ns1.dotvndns.vn`
NS	`ns1.its.vn`
		A	112.213.89.3^{🇻🇳 SUPERDATA112.213.89.0/24 Vietnam Internet Network Information Center (VNNIC) 18 Nguyen Du Str, Hai Ba Trung District, Hanoi City, Vietnam 24th floor, VNTA Tower, Duong Dinh Nghe, Cau Giay, Hanoi}
			PTR	`ns1.dotvndns.vn`
NS	`ns2.its.vn`
		A	222.255.121.247^{🇻🇳 VDC222.255.121.0/24 VNPT}
			PTR	`static.vdc.vn`
			PTR	`static.vnpt.vn`
SOA	`ns1.dotvndns.vn`hostmaster@tridau.com.vn 2025-08-20 #7

`com.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.vn`postmaster@vnnic.vn serial=2022709887

Subdomains

api.tridau.com.vn

Same first word

tridau.com

tridau.net

tridau.com.vn

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DNS History

4 records (4 active, 0 former)

●NSns1.dotvndns.vn2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 09:16:16
● 2026-05-11 13:12:04

●NSns1.its.vn2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 09:16:16
● 2026-05-11 13:12:04

●NSns2.its.vn2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 09:16:16
● 2026-05-11 13:12:04

●A27.71.232.752026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 09:16:16
● 2026-05-11 13:12:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	c.dns-servers.vn, a.dns-servers.vn, e.dns-servers.vn, g.dns-servers.vn...	-
tridau.com.vn	ns2.its.vn, ns1.dotvndns.vn, ns1.its.vn	-

✅ Authoritative Response

Server:222.255.121.247

NS records: ns2.its.vn, ns1.dotvndns.vn, ns1.its.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tridau.com.vn (unsigned zone)

⏱️ Timing

Total: 4360ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`27.71.232.75`
NS	3	`ns1.dotvndns.vn, ns1.its.vn...`
SOA	1	`ns1.dotvndns.vn hostmaster.tridau.com.vn`

Analysis

Hierarchy

tridau.com.vn is parent of api.tridau.com.vn.

IP Addresses

tridau.com.vn points to a single IP: 27.71.232.75.

Other host names such as tridau.net and api.tridau.com.vn share IP numbers with tridau.com.vn.

Name Servers

tridau.com.vn is delegated to three name servers: ns1.dotvndns.vn, ns1.its.vn and ns2.its.vn.

tridau.com.vn at least partially shares its name servers with other domains, for instance peridot.vn, svi.com.vn, hvc.edu.vn, veca.vn and ladophar.com.vn.