`duocvietphuc.com`

DNSSEC	⚠️ Not signed
A	103.131.74.26^{🇻🇳 SUPERDATA103.131.74.0/24 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}
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	`mail8971.maychuemail.com` ⭐
		A	112.213.89.71^{🇻🇳 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	`ns8971.dotvndns.vn`
TXT	`v=spf1 a mx ip4:112.213.89.71 ~all`
SOA	`nsbak.pavietnam.net`hostmaster@duocvietphuc.com 2025-03-28 #29

`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=1778496596

Subdomains

mail.duocvietphuc.com

Same first word

duocvietphuc.com

DNS History

10 records (5 active, 5 former)

○NSns1.freedns.vn2016-12-18 → 2016-12-18 · 3 obs

● 2016-12-18 12:41:56
○ 2017-11-07 12:04:06
○ 2026-05-11 10:51:02

●NSns1.pavietnam.vn2017-11-07 → 2026-05-11 · 3 obs

○ 2016-12-18 12:41:56
● 2017-11-07 12:04:06
● 2026-05-11 10:51:02

○NSns2.freedns.vn2016-12-18 → 2016-12-18 · 3 obs

● 2016-12-18 12:41:56
○ 2017-11-07 12:04:06
○ 2026-05-11 10:51:02

●NSns2.pavietnam.vn2017-11-07 → 2026-05-11 · 3 obs

○ 2016-12-18 12:41:56
● 2017-11-07 12:04:06
● 2026-05-11 10:51:02

●NSnsbak.pavietnam.net2017-11-07 → 2026-05-11 · 3 obs

○ 2016-12-18 12:41:56
● 2017-11-07 12:04:06
● 2026-05-11 10:51:02

○MXmail.duocvietphuc.com2017-11-07 → 2017-11-07 · 3 obs

● 2017-11-07 12:04:06
○ 2026-03-13 02:09:22
○ 2026-05-11 10:51:02

●MXmail8971.maychuemail.com2026-03-13 → 2026-05-11 · 3 obs

○ 2017-11-07 12:04:06
● 2026-03-13 02:09:22
● 2026-05-11 10:51:02

●A103.131.74.262026-03-23 → 2026-05-11 · 3 obs

○ 2026-03-13 02:09:22
● 2026-03-23 04:41:20
● 2026-05-11 10:51:02

○A103.42.56.1702016-12-18 → 2016-12-18 · 3 obs

● 2016-12-18 12:41:56
○ 2017-11-07 12:04:06
○ 2026-05-11 10:51:02

○A171.244.18.1852017-11-07 → 2017-11-07 · 4 obs

○ 2016-12-18 12:41:56
● 2017-11-07 12:04:06
○ 2026-03-13 02:09:22
○ 2026-05-11 10:51:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
duocvietphuc.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 duocvietphuc.com (unsigned zone)

⏱️ Timing

Total: 3670ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.131.74.26`
NS	3	`ns2.pavietnam.vn, nsbak.pavietnam.net...`
MX	1	`mail8971.maychuemail.com (pri: 1)`
TXT	1	`v=spf1 a mx ip4:112.213.89.71 ~all`
SOA	1	`nsbak.pavietnam.net hostmaster.duocvietp`

Analysis

Hierarchy

mail.duocvietphuc.com has duocvietphuc.com as its parent.

IP Addresses

duocvietphuc.com maps to IP address 103.131.74.26.

Other host names, for instance 114search.118114.cn.bypas.hongsamhanquoc.net, wbsubdomain.a.bb.ccc.dddd.mta-sts.mwc.edu.vn, sumika.vn, mwc.edu.vn and khucongnghiepphuanthanh.com share IP numbers with duocvietphuc.com.

Name Servers

duocvietphuc.com is delegated to name servers nsbak.pavietnam.net, ns1.pavietnam.vn and ns2.pavietnam.vn.

duocvietphuc.com at least partially shares name servers with other domains such as chondiaoc.vn, socongthuongbp.gov.vn, thailong.com.vn, tusuaxedien.com and zippobac.com.

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

duocvietphuc.com is handled by a single mail server, mail8971.maychuemail.com.

duocvietphuc.com shares the same mail server setup as other domains, including huongvinga.com, vantailt.com, sinhvien.vtvc.edu.vn, hamisa.com.vn and fpm.edu.vn.

duocvietphuc.com shares some mail servers with other domains, for instance greenpioneer.vn and airpot.vn.

mail8971.maychuemail.com points to one IP number: 112.213.89.71.

duocvietphuc.com - robtex.com