`duykhanh.com`

DNSSEC	⚠️ Not signed
A	112.213.89.89^{🇻🇳 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	`hana.dotvndns.com`
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	`mail24417.maychuemail.com` ⭐
		A	123.30.244.17^{🇻🇳 VDC123.30.244.0/24 VNPT}
			PTR	`mail24417.maychuemail.com`
			PTR	`880521.static.maychudns.com`
MX	`mx9217.maychuemail.net`⁽¹⁰⁾
		A	112.213.92.17^{🇻🇳 SUPERDATA112.213.92.0/24 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	`mx9217.maychuemail.net`
TXT	`MS=ADF37689224D60D12EE0A2809EA9C6B129E414C0`
TXT	`v=spf1 +a +mx +ip4:112.213.92.17 +ip4:123.30.244.17 ~all`
SOA	`nsbak.pavietnam.net`hostmaster@duykhanh.com 2025-12-09 #5

`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=1774665962

Subdomains

mail.duykhanh.com

Same first word

duykhanh.de

duykhanh.com

duykhanh.net

duykhanh.com.vn

DNS History

13 records (6 active, 7 former)

○NS(root)2015-08-10 → 2017-08-17 · 3 obs

● 2015-08-10 13:48:38
● 2017-08-17 20:41:54
○ 2026-03-28 02:46:46

○NSns1.dns-diy.net2015-08-10 → 2017-08-17 · 3 obs

● 2015-08-10 13:48:38
● 2017-08-17 20:41:54
○ 2026-03-28 02:46:46

●NSns1.pavietnam.vn2026-03-28 → 2026-03-28 · 2 obs

○ 2017-08-17 20:41:54
● 2026-03-28 02:46:46

○NSns2.dns-diy.net2015-08-10 → 2017-08-17 · 3 obs

● 2015-08-10 13:48:38
● 2017-08-17 20:41:54
○ 2026-03-28 02:46:46

●NSns2.pavietnam.vn2026-03-28 → 2026-03-28 · 2 obs

○ 2017-08-17 20:41:54
● 2026-03-28 02:46:46

●NSnsbak.pavietnam.net2026-03-28 → 2026-03-28 · 2 obs

○ 2017-08-17 20:41:54
● 2026-03-28 02:46:46

○MXmail.duykhanh.com2015-08-10 → 2017-08-17 · 3 obs

● 2015-08-10 13:48:38
● 2017-08-17 20:41:54
○ 2026-03-28 02:46:46

●MXmail24417.maychuemail.com2026-03-28 → 2026-03-28 · 2 obs

○ 2017-08-17 20:41:54
● 2026-03-28 02:46:46

●MXmx9217.maychuemail.net2026-03-28 → 2026-03-28 · 2 obs

○ 2017-08-17 20:41:54
● 2026-03-28 02:46:46

○A112.213.89.1712016-04-02 → 2016-12-19 · 5 obs

○ 2015-12-21 17:15:32
● 2016-04-02 22:32:06
● 2016-12-19 13:34:30
○ 2017-08-17 20:41:54
○ 2026-03-28 02:46:46

○A112.213.89.22017-08-17 → 2017-08-17 · 3 obs

○ 2016-12-19 13:34:30
● 2017-08-17 20:41:54
○ 2026-03-28 02:46:46

○A112.213.89.592015-08-10 → 2015-12-21 · 4 obs

● 2015-08-10 13:48:38
● 2015-12-21 17:15:32
○ 2016-04-02 22:32:06
○ 2026-03-28 02:46:46

●A112.213.89.892026-03-28 → 2026-03-28 · 2 obs

○ 2017-08-17 20:41:54
● 2026-03-28 02:46:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
duykhanh.com	nsbak.pavietnam.net, ns1.pavietnam.vn, ns2.pavietnam.vn	-

✅ Authoritative Response

Server:112.213.89.3

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for duykhanh.com (unsigned zone)

⏱️ Timing

Total: 1475ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`112.213.89.89`
NS	3	`ns1.pavietnam.vn, ns2.pavietnam.vn...`
MX	2	`mx9217.maychuemail.net (pri: 10), mail24417.maychuemail.com (pri: 5)`
TXT	2	`v=spf1 +a +mx +ip4:112.213.92.17 +ip4:12, MS=ADF37689224D60D12EE0A2809EA9C6B129E41`
SOA	1	`nsbak.pavietnam.net hostmaster.duykhanh.`

Analysis

Hierarchy

duykhanh.com is parent of mail.duykhanh.com.

IP Addresses

duykhanh.com points to a single IP: 112.213.89.89.

Other host names, for instance poulocondorresort.com, www.vanphongphamgiasi.vn, sscenter.vn, thegioithietbivn.com and mail.nhadepvuonxinh.com.vn share IP numbers with duykhanh.com.

Name Servers

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

duykhanh.com at least partially shares its name servers with other domains, for instance antinphat.com.vn, petrochem.com.vn, lutron.com.vn, vndancesport.com and ier.org.vn.

these name servers are commonly used with the name servers ns1.dotvndns.vn, nsbak.dotvndns.com, ns2.dotvndns.vn, nsbak.pavietnam.vn, ns3.dotvndns.vn 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

Two mail servers mail24417.maychuemail.com and mx9217.maychuemail.net handle duykhanh.com.

duykhanh.com shares the same mail server setup as empire-jsc.com, klaus-refrigeration.com and dongnamcorp.com.vn.

duykhanh.com shares some mail servers with other domains at least partially, for example vietekcons.vn.

These mail servers are often used alongside the mail servers mail9217.maychuemail.com.

Host names with a single IP:

mail24417.maychuemail.com resolves to 123.30.244.17.

mx9217.maychuemail.net resolves to 112.213.92.17.

duykhanh.com - robtex.com

duykhanh.com

com

Subdomains

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`duykhanh.com`

`com`