`duhocvangsang.com`

DNSSEC	⚠️ Not signed
A	210.211.109.6^{🇻🇳 VTDC-AS-VN210.211.108.0/22 Proxy-registered route object}
		PTR	`1096.ninavietnam.info`
NS	`ns1.nina.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.nina.vn`
		A	222.255.121.247^{🇻🇳 VDC222.255.121.0/24 VNPT}
			PTR	`static.vdc.vn`
			PTR	`static.vnpt.vn`
NS	`ns3.nina.vn`
		A	112.213.89.22^{🇻🇳 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	`ns8922.dotvndns.vn`
SOA	`ns1.nina.vn`hostmaster@duhocvangsang.com 2022-07-08 #2

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1778452501

Same first word

duhocvangsang.com

DNS History

8 records (4 active, 4 former)

○NSns-master.inet.vn2016-12-14 → 2018-08-11 · 4 obs

● 2016-12-14 13:56:32
● 2018-08-11 05:03:58
○ 2026-05-01 15:51:22
○ 2026-05-10 23:01:24

○NSns1.inet.vn2016-12-14 → 2018-08-11 · 4 obs

● 2016-12-14 13:56:32
● 2018-08-11 05:03:58
○ 2026-05-01 15:51:22
○ 2026-05-10 23:01:24

●NSns1.nina.vn2026-05-01 → 2026-05-10 · 3 obs

○ 2018-08-11 05:03:58
● 2026-05-01 15:51:22
● 2026-05-10 23:01:24

○NSns2.inet.vn2016-12-14 → 2018-08-11 · 4 obs

● 2016-12-14 13:56:32
● 2018-08-11 05:03:58
○ 2026-05-01 15:51:22
○ 2026-05-10 23:01:24

●NSns2.nina.vn2026-05-01 → 2026-05-10 · 3 obs

○ 2018-08-11 05:03:58
● 2026-05-01 15:51:22
● 2026-05-10 23:01:24

●NSns3.nina.vn2026-05-01 → 2026-05-10 · 3 obs

○ 2018-08-11 05:03:58
● 2026-05-01 15:51:22
● 2026-05-10 23:01:24

○A202.92.5.962016-12-14 → 2018-08-11 · 4 obs

● 2016-12-14 13:56:32
● 2018-08-11 05:03:58
○ 2026-05-01 15:51:22
○ 2026-05-10 23:01:24

●A210.211.109.62026-05-01 → 2026-05-10 · 3 obs

○ 2018-08-11 05:03:58
● 2026-05-01 15:51:22
● 2026-05-10 23:01:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
duhocvangsang.com	ns1.nina.vn, ns2.nina.vn, ns3.nina.vn	-

✅ Authoritative Response

Server:112.213.89.22

NS records: ns1.nina.vn, ns2.nina.vn, ns3.nina.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for duhocvangsang.com (unsigned zone)

⏱️ Timing

Total: 995ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`210.211.109.6`
NS	3	`ns3.nina.vn, ns2.nina.vn...`
SOA	1	`ns1.nina.vn hostmaster.duhocvangsang.com`

Analysis

IP Addresses

duhocvangsang.com points to a single IP number: 210.211.109.6.

other host names for instance mail.gioquatraicayhcm.com, www.nepinoxtrangtrihcm.com, www.daythietkerap.vn, buaphadahoanganh.vn and mail.88ao.com.vn share IP numbers with duhocvangsang.com.

Name Servers

duhocvangsang.com is delegated to three name servers: ns1.nina.vn, ns2.nina.vn and ns3.nina.vn.

duhocvangsang.com at least partially shares name servers with other domains, for instance spauytinphuquoc.com, thietbidiendiepchau.com, banghieudenled.net, daplyvai.com and khoruougiagoc.com.

These name servers are commonly used alongside the name servers ns1.dotvndns.vn, ns4.nina.vn, nsbak.pavietnam.net, ns1.pavietnam.vn and ns2.pavietnam.vn.

Host names with one IP number:

ns1.nina.vn points to 112.213.89.3.

ns2.nina.vn points to 222.255.121.247.

ns3.nina.vn points to 112.213.89.22.

duhocvangsang.com - robtex.com