`tmquoctuan.com`

DNSSEC	⚠️ Not signed
A	103.221.220.15^{🇻🇳 AZDIGI-AS-VN103.221.220.0/22 AZDIGI-VN}
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`
MX	`mx2.zoho.com` ⭐
		A	136.143.183.44^{🇺🇸 ZohoAS136.143.182.0/23 Zoho}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx3.zoho.com`⁽²⁰⁾
		A	136.143.191.44^{🇺🇸 ZohoAS136.143.190.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
MX	`mx.zoho.com`⁽⁵⁰⁾
		A	136.143.183.44^{🇺🇸 ZohoAS136.143.182.0/23 Zoho}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
		A	136.143.191.44^{🇺🇸 ZohoAS136.143.190.0/23 Zoho Corporation}
			PTR	`mx2.zoho.com`
			PTR	`mx3.zoho.com`
			PTR	`mx.zoho.com`
			PTR	`mx2.zohomail.com`
			PTR	`mx3.zohomail.com`
			PTR	`mx.zohomail.com`
TXT	`v=spf1 include:zoho.com ~all`
TXT	`zoho-verification=zb14339871.zmverify.zoho.com`
SOA	`nsbak.dotvndns.com`hostmaster@tmquoctuan.com 2022-12-04 #23

`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=1776102747

Subdomains

mail.tmquoctuan.com

www.tmquoctuan.com

Same first word

tmquoctuan.com

DNS History

10 records (7 active, 3 former)

●NSns1.dotvndns.vn2015-07-04 → 2026-04-13 · 2 obs

● 2015-07-04 16:45:52
● 2026-04-13 17:53:00

●NSns2.dotvndns.vn2015-07-04 → 2026-04-13 · 2 obs

● 2015-07-04 16:45:52
● 2026-04-13 17:53:00

●NSnsbak.dotvndns.com2015-07-04 → 2026-04-13 · 2 obs

● 2015-07-04 16:45:52
● 2026-04-13 17:53:00

●MXmx.zoho.com2026-02-20 → 2026-04-13 · 3 obs

○ 2019-12-20 13:25:12
● 2026-02-20 07:27:24
● 2026-04-13 17:53:00

○MXmx.zohomail.com2015-07-04 → 2019-12-20 · 4 obs

● 2015-07-04 16:45:52
● 2019-12-20 13:25:12
○ 2026-02-20 07:27:24
○ 2026-04-13 17:53:00

●MXmx2.zoho.com2026-02-20 → 2026-04-13 · 3 obs

○ 2019-12-20 13:25:12
● 2026-02-20 07:27:24
● 2026-04-13 17:53:00

○MXmx2.zohomail.com2015-07-04 → 2019-12-20 · 4 obs

● 2015-07-04 16:45:52
● 2019-12-20 13:25:12
○ 2026-02-20 07:27:24
○ 2026-04-13 17:53:00

●MXmx3.zoho.com2026-02-20 → 2026-04-13 · 3 obs

○ 2019-12-20 13:25:12
● 2026-02-20 07:27:24
● 2026-04-13 17:53:00

●A103.221.220.152026-02-20 → 2026-04-13 · 3 obs

○ 2019-12-20 13:25:12
● 2026-02-20 07:27:24
● 2026-04-13 17:53:00

○A103.27.62.502015-07-04 → 2019-12-20 · 4 obs

● 2015-07-04 16:45:52
● 2019-12-20 13:25:12
○ 2026-02-20 07:27:24
○ 2026-04-13 17:53:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, j.gtld-servers.net, d.gtld-servers.net, f.gtld-servers.net...	-
tmquoctuan.com	nsbak.dotvndns.com, ns1.dotvndns.vn, ns2.dotvndns.vn	2 records

✅ Authoritative Response

Server:112.213.89.22

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tmquoctuan.com (unsigned zone)

⏱️ Timing

Total: 1497ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`103.221.220.15`
NS	3	`nsbak.dotvndns.com, ns2.dotvndns.vn...`
MX	3	`mx3.zoho.com (pri: 50), mx.zoho.com (pri: 10)...`
TXT	2	`v=spf1 include:zoho.com ~all, zoho-verification=zb14339871.zmverify.zo`
SOA	1	`nsbak.dotvndns.com hostmaster.tmquoctuan`

📌 Glue Records Collected

Total: 2

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

Analysis

Hierarchy

tmquoctuan.com is parent of mail.tmquoctuan.com and www.tmquoctuan.com.

IP Addresses

tmquoctuan.com resolves to a single IP address: 103.221.220.15.

Other host names including tomkin24h.com, mail.tmquoctuan.com, tiemmethoc.com, mail.tiengo.vn and aatco.com.vn share IP numbers with tmquoctuan.com.

Name Servers

tmquoctuan.com is delegated to three name servers: nsbak.dotvndns.com, ns1.dotvndns.vn and ns2.dotvndns.vn.

tmquoctuan.com at least partially shares name servers with other domains, including kay.vn, tanminhgiang.com, thuevaban.vn, athena.vn and dienlanhlamquangdai.vn.