`hocwebtructuyen.com`

DNSSEC	⚠️ Not signed
A	103.154.177.230^{🇻🇳 VISITEC-AS-VN103.154.176.0/23 VISITEC-VN Vinh Railway Signalling - Telecom Joint Stock Company}
NS	`nsbak.pavietnam.net` ⭐
		A	2406:9c80::9000:302^{🇻🇳 SUPERDATA2406:9c80::/48 -VN}
			PTR	`nsbak.dotvndns.com`
		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`
NS	`ns1.pavietnam.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	`ns2.pavietnam.vn`
		A	2406:9c80::9000:111^{🇻🇳 SUPERDATA2406:9c80::/48 -VN}
			PTR	`ns2.dotvndns.vn`
		A	222.255.121.247^{🇻🇳 VDC222.255.121.0/24 VNPT}
			PTR	`static.vdc.vn`
			PTR	`static.vnpt.vn`
MX	`mail.hocwebtructuyen.com` ⭐
		A	103.154.177.230^{🇻🇳 VISITEC-AS-VN103.154.176.0/23 VISITEC-VN Vinh Railway Signalling - Telecom Joint Stock Company}
TXT	`v=spf1 a mx ~all`
SOA	`nsbak.pavietnam.net`hostmaster@hocwebtructuyen.com 2025-06-28 #12

`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=1777075381

Subdomains

mail.hocwebtructuyen.com

Same first word

hocwebtructuyen.com

DNS History

9 records (5 active, 4 former)

●NSns1.pavietnam.vn2015-06-03 → 2026-04-25 · 2 obs

● 2015-06-03 10:36:18
● 2026-04-25 00:28:54

●NSns2.pavietnam.vn2015-06-03 → 2026-04-25 · 2 obs

● 2015-06-03 10:36:18
● 2026-04-25 00:28:54

●NSnsbak.pavietnam.net2026-03-08 → 2026-04-25 · 3 obs

○ 2015-06-03 10:36:18
● 2026-03-08 19:21:44
● 2026-04-25 00:28:54

●MXmail.hocwebtructuyen.com2015-06-03 → 2026-04-25 · 2 obs

● 2015-06-03 10:36:18
● 2026-04-25 00:28:54

●A103.154.177.2302026-03-08 → 2026-04-25 · 3 obs

○ 2017-12-08 04:03:52
● 2026-03-08 19:21:44
● 2026-04-25 00:28:54

○A103.53.168.1432015-10-29 → 2016-04-25 · 5 obs

○ 2015-06-03 10:36:18
● 2015-10-29 20:41:16
● 2016-04-25 20:19:40
○ 2016-12-29 19:57:52
○ 2026-04-25 00:28:54

○A103.74.119.2402017-12-08 → 2017-12-08 · 4 obs

○ 2016-12-29 19:57:52
● 2017-12-08 04:03:52
○ 2026-03-08 19:21:44
○ 2026-04-25 00:28:54

○A123.30.250.492016-12-29 → 2016-12-29 · 4 obs

○ 2016-04-25 20:19:40
● 2016-12-29 19:57:52
○ 2017-12-08 04:03:52
○ 2026-04-25 00:28:54

○A221.133.9.572015-06-03 → 2015-06-03 · 3 obs

● 2015-06-03 10:36:18
○ 2015-10-29 20:41:16
○ 2026-04-25 00:28:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
hocwebtructuyen.com	nsbak.pavietnam.net, ns1.pavietnam.vn, ns2.pavietnam.vn	-

✅ Authoritative Response

Server:112.213.89.22

NS records: nsbak.pavietnam.net, ns1.pavietnam.vn, ns2.pavietnam.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for hocwebtructuyen.com (unsigned zone)

⏱️ Timing

Total: 3155ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.154.177.230`
NS	3	`ns2.pavietnam.vn, nsbak.pavietnam.net...`
MX	1	`mail.hocwebtructuyen.com (pri: 10)`
TXT	1	`v=spf1 a mx ~all`
SOA	1	`nsbak.pavietnam.net hostmaster.hocwebtru`

Analysis

Hierarchy

hocwebtructuyen.com is parent of mail.hocwebtructuyen.com.

IP Addresses

hocwebtructuyen.com points to a single IP: 103.154.177.230.

Other host names, for instance mail.hocwebtructuyen.com, dailyhatdieu.com, mail.dailyhatdieu.com, hoatech.vn and acmex.com.vn share IP numbers with hocwebtructuyen.com.

Name Servers

hocwebtructuyen.com is delegated to three name servers: nsbak.pavietnam.net, ns1.pavietnam.vn and ns2.pavietnam.vn.

hocwebtructuyen.com at least partially shares its name servers with other domains, for instance bepgazenne.com, duykhanh.com, quanlybaohanh.com, idealogic.com.vn and viettridao.com.

These name servers are commonly used together with ns1.dotvndns.vn, ns2.dotvndns.vn, nsbak.dotvndns.com, nsbak.pavietnam.vn, dnsbak.pavietnam.vn, nsbak.dotvndns.vn, dnsbak.dotvndns.vn and ns3.dotvndns.vn.

Host names with two IP numbers:

nsbak.pavietnam.net points to: 2406:9c80::9000:302 and 112.213.89.22.

ns1.pavietnam.vn points to: 2406:9c80::66 and 112.213.89.3.

ns2.pavietnam.vn points to: 2406:9c80::9000:111 and 222.255.121.247.

Mail Servers

hocwebtructuyen.com is served by a single mail server, mail.hocwebtructuyen.com.

mail.hocwebtructuyen.com points to IP number 103.154.177.230.

hocwebtructuyen.com - robtex.com