`dichtudong.com`

DNSSEC	⚠️ Not signed
A	103.82.37.100^{🇻🇳 CLOUDFLY-VN103.82.36.0/22}
		PTR	`octopus.com`
NS	`nsbak.dotvndns.com` ⭐
		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.dotvndns.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.dotvndns.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`
NS	`ns3.dotvndns.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`
MX	`pro48.emailserver.vn` ⭐
		A	103.110.129.148^{🇻🇳 AXYS-VN103.110.128.0/23}
			PTR	`pro48.emailserver.vn`
TXT	`google-site-verification=8gB9_F5hHJdn1Z0r7TJFyIEEPtRewg6IMOyWvoSXkg8`
TXT	`v=spf1 mx include:emailserver.vn include:spf.protection.outlook.com -all`
SOA	`nsbak.dotvndns.com`hostmaster@dichtudong.com 2025-09-05 #36

`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

WOT: SAFE (1/100)

Subdomains

mail.dichtudong.com

Same first word

dichtudong.com

DNS History

23 records (6 active, 17 former)

○NSlaura.ns.cloudflare.com2020-04-01 → 2020-04-01 · 4 obs

○ 2017-03-29 09:10:52
● 2020-04-01 15:22:04
○ 2026-03-13 01:29:20
○ 2026-05-10 22:46:00

○NSnoah.ns.cloudflare.com2020-04-01 → 2020-04-01 · 4 obs

○ 2017-03-29 09:10:52
● 2020-04-01 15:22:04
○ 2026-03-13 01:29:20
○ 2026-05-10 22:46:00

○NSns1.afraid.org2015-08-07 → 2017-03-29 · 4 obs

● 2015-08-07 15:03:26
● 2017-03-29 09:10:52
○ 2020-04-01 15:22:04
○ 2026-05-10 22:46:00

●NSns1.dotvndns.vn2026-03-13 → 2026-05-10 · 3 obs

○ 2020-04-01 15:22:04
● 2026-03-13 01:29:20
● 2026-05-10 22:46:00

○NSns2.afraid.org2015-08-07 → 2017-03-29 · 4 obs

● 2015-08-07 15:03:26
● 2017-03-29 09:10:52
○ 2020-04-01 15:22:04
○ 2026-05-10 22:46:00

●NSns2.dotvndns.vn2026-03-13 → 2026-05-10 · 3 obs

○ 2020-04-01 15:22:04
● 2026-03-13 01:29:20
● 2026-05-10 22:46:00

○NSns3.afraid.org2015-08-07 → 2017-03-29 · 4 obs

● 2015-08-07 15:03:26
● 2017-03-29 09:10:52
○ 2020-04-01 15:22:04
○ 2026-05-10 22:46:00

●NSns3.dotvndns.vn2026-03-13 → 2026-05-10 · 3 obs

○ 2020-04-01 15:22:04
● 2026-03-13 01:29:20
● 2026-05-10 22:46:00

○NSns4.afraid.org2015-08-07 → 2017-03-29 · 4 obs

● 2015-08-07 15:03:26
● 2017-03-29 09:10:52
○ 2020-04-01 15:22:04
○ 2026-05-10 22:46:00

●NSnsbak.dotvndns.com2026-03-13 → 2026-05-10 · 3 obs

○ 2020-04-01 15:22:04
● 2026-03-13 01:29:20
● 2026-05-10 22:46:00

○MXmail.dichtudong.com2015-08-07 → 2017-03-29 · 4 obs

● 2015-08-07 15:03:26
● 2017-03-29 09:10:52
○ 2020-04-01 15:22:04
○ 2026-05-10 22:46:00

○MXmx.yandex.net2020-04-01 → 2020-04-01 · 4 obs

○ 2017-03-29 09:10:52
● 2020-04-01 15:22:04
○ 2026-03-13 01:29:20
○ 2026-05-10 22:46:00

●MXpro48.emailserver.vn2026-03-13 → 2026-05-10 · 3 obs

○ 2020-04-01 15:22:04
● 2026-03-13 01:29:20
● 2026-05-10 22:46:00

○A1.55.70.832016-08-08 → 2016-08-08 · 4 obs

○ 2016-03-25 12:29:54
● 2016-08-08 08:15:54
○ 2017-03-29 09:10:52
○ 2026-05-10 22:46:00

●A103.82.37.1002026-03-13 → 2026-05-10 · 3 obs

○ 2020-04-01 15:22:04
● 2026-03-13 01:29:20
● 2026-05-10 22:46:00

○A104.28.28.432020-04-01 → 2020-04-01 · 4 obs

○ 2017-03-29 09:10:52
● 2020-04-01 15:22:04
○ 2026-03-13 01:29:20
○ 2026-05-10 22:46:00

○A104.28.29.432020-04-01 → 2020-04-01 · 4 obs

○ 2017-03-29 09:10:52
● 2020-04-01 15:22:04
○ 2026-03-13 01:29:20
○ 2026-05-10 22:46:00

○A2606:4700:3030::681c:1c2b2020-04-01 → 2020-04-01 · 4 obs

○ 2017-03-29 09:10:52
● 2020-04-01 15:22:04
○ 2026-03-13 01:29:20
○ 2026-05-10 22:46:00

○A2606:4700:3032::681c:1d2b2020-04-01 → 2020-04-01 · 4 obs

○ 2017-03-29 09:10:52
● 2020-04-01 15:22:04
○ 2026-03-13 01:29:20
○ 2026-05-10 22:46:00

○A42.113.0.912017-03-29 → 2017-03-29 · 4 obs

○ 2016-08-08 08:15:54
● 2017-03-29 09:10:52
○ 2020-04-01 15:22:04
○ 2026-05-10 22:46:00

○A42.114.130.972015-08-07 → 2015-08-07 · 3 obs

● 2015-08-07 15:03:26
○ 2015-12-10 11:13:58
○ 2026-05-10 22:46:00

○A42.116.204.2232015-12-10 → 2015-12-10 · 4 obs

○ 2015-08-07 15:03:26
● 2015-12-10 11:13:58
○ 2016-03-25 12:29:54
○ 2026-05-10 22:46:00

○A58.187.21.502016-03-25 → 2016-03-25 · 4 obs

○ 2015-12-10 11:13:58
● 2016-03-25 12:29:54
○ 2016-08-08 08:15:54
○ 2026-05-10 22:46:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
dichtudong.com	nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn, ns3.dotvndns.vn	2 records

✅ Authoritative Response

Server:112.213.89.22

NS records: nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn, ns3.dotvndns.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dichtudong.com (unsigned zone)

⏱️ Timing

Total: 1585ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.82.37.100`
NS	4	`ns1.dotvndns.vn, ns2.dotvndns.vn...`
MX	1	`pro48.emailserver.vn (pri: 10)`
TXT	2	`v=spf1 mx include:emailserver.vn include, google-site-verification=8gB9_F5hHJdn1Z0`
SOA	1	`nsbak.dotvndns.com hostmaster.dichtudong`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (nsbak.dotvndns.com, nsbak.dotvndns.com)

Analysis

Hierarchy

dichtudong.com is the parent of mail.dichtudong.com.

IP Addresses

dichtudong.com resolves to one IP number: 103.82.37.100.

Other host names, for instance index.vidocr.com, share IP numbers with dichtudong.com.

Name Servers

dichtudong.com is delegated to four name servers: nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn and ns3.dotvndns.vn.

dichtudong.com at least partially shares name servers with other domains, for instance noithatannam.com, anhhieustudio.com, amy.vn, ketnoinhanong.com and cuchoachat.gov.vn.

these name servers are often used together with ns1.pavietnam.vn, ns2.pavietnam.vn, nsbak.pavietnam.net and ns4.dotvndns.vn.

Hosts with two IP numbers:

nsbak.dotvndns.com points to 2406:9c80::9000:302 and 112.213.89.22.

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

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

Hosts with one IP number:

ns3.dotvndns.vn points to 112.213.89.22.

Hosts that point to 112.213.89.22: nsbak.dotvndns.com and ns3.dotvndns.vn.

Mail Servers

dichtudong.com is handled by a single mail server, pro48.emailserver.vn.

dichtudong.com shares the same mail server setup as other domains, for instance ikac.vn, nqctelecom.vn, anduc.com, ntesco.com and frontierenc.com.

dichtudong.com shares at least partially some mail servers with other domains, including gangtaycaosu.com, lamnguyentravel.com.vn and plantynet.vn.

pro48.emailserver.vn resolves to IP 103.110.129.148.

dichtudong.com - robtex.com

dichtudong.com

com

Subdomains

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`dichtudong.com`

`com`