`thptduongdong.com`

DNSSEC	⚠️ Not signed
A	103.254.12.57^{🇻🇳 BIZMAC-VN-AS103.254.12.0/24 BIZMAC-VN}
		PTR	`web03.bizmac.vn`
NS	`ns1.bizmac.net` ⭐
		A	45.117.76.241^{🇻🇳 BIZMAC-VN-AS45.117.76.0/24 BIZMAC-VN}
			PTR	`ns1.bizmac.net`
NS	`ns2.bizmac.net`
		A	103.238.215.29^{🇻🇳 VTN-1103.238.215.0/24 Vietnam Post and Telecom Corporation (VNPT)}
			PTR	`ns2.bizmac.net`
NS	`ns3.bizmac.net` ⚠️ Not in parent delegation
		A	45.117.78.29^{🇻🇳 BIZMAC-VN-AS45.117.78.0/24 BIZMAC-VN}
			PTR	`ns3.bizmac.net`
MX	`thptduongdong.com` ⭐
		A	103.254.12.57^{🇻🇳 BIZMAC-VN-AS103.254.12.0/24 BIZMAC-VN}
			PTR	`web03.bizmac.vn`
SOA	`ns1.bizmac.net`dns@bizmac.com 2022-06-23 #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=1778673746

MX for

thptduongdong.com

Same first word

thptduongdong.com

DNS History

8 records (5 active, 3 former)

●NSns1.bizmac.net2026-02-26 → 2026-05-13 · 3 obs

○ 2017-01-04 19:01:20
● 2026-02-26 19:07:32
● 2026-05-13 12:09:52

○NSns1000.digistardns.com2017-01-04 → 2017-01-04 · 3 obs

● 2017-01-04 19:01:20
○ 2026-02-26 19:07:32
○ 2026-05-13 12:09:52

●NSns2.bizmac.net2026-02-26 → 2026-05-13 · 3 obs

○ 2017-01-04 19:01:20
● 2026-02-26 19:07:32
● 2026-05-13 12:09:52

○NSns2000.digistardns.com2017-01-04 → 2017-01-04 · 3 obs

● 2017-01-04 19:01:20
○ 2026-02-26 19:07:32
○ 2026-05-13 12:09:52

●NSns3.bizmac.net2026-02-26 → 2026-05-13 · 3 obs

○ 2017-01-04 19:01:20
● 2026-02-26 19:07:32
● 2026-05-13 12:09:52

○MXmail.thptduongdong.com2017-01-04 → 2017-01-04 · 3 obs

● 2017-01-04 19:01:20
○ 2026-02-26 19:07:32
○ 2026-05-13 12:09:52

●MXthptduongdong.com2026-02-26 → 2026-05-13 · 3 obs

○ 2017-01-04 19:01:20
● 2026-02-26 19:07:32
● 2026-05-13 12:09:52

●A103.254.12.572017-01-04 → 2026-05-13 · 2 obs

● 2017-01-04 19:01:20
● 2026-05-13 12:09:52

🔍 DNS Trace

Analysis

Mail Server Role

thptduongdong.com serves as the mail server for thptduongdong.com.

IP Addresses

thptduongdong.com points to a single IP number: 103.254.12.57.

Other host names, for instance mail.vienthongthinhphat.com, tambui.net, b-web03.ns.bizmac.net, namhuynhdao.vn and tuyensinh.vuted.edu.vn share IP numbers with thptduongdong.com.

Name Servers

The domain thptduongdong.com is delegated to three name servers: ns1.bizmac.net, ns2.bizmac.net and ns3.bizmac.net.

thptduongdong.com shares name servers with other domains at least partially, for instance vienmaytinh.vn, ketoandavid.com.vn, cocoland.vn, vietsovpet.com.vn and bienxanh.net.

these name servers are often used together with the name servers bank.bizmac.net.

Host names with a single IP number:

ns1.bizmac.net points to 45.117.76.241.

ns2.bizmac.net points to 103.238.215.29.

ns3.bizmac.net points to 45.117.78.29.

Mail Servers

A single mail server handles thptduongdong.com and thptduongdong.com.

Host name thptduongdong.com resolves to IP 103.254.12.57.

thptduongdong.com - robtex.com