`mail.htdengineering.com`

DNSSEC	⚠️ Not signed
A	210.211.108.104^{🇻🇳 VTDC-AS-VN210.211.108.0/22 Proxy-registered route object}
		PTR	`108104.ninavietnam.info`

`htdengineering.com`

	DNSSEC	⚠️ Not signed
	A	210.211.108.104^{🇻🇳 VTDC-AS-VN210.211.108.0/22 Proxy-registered route object}
	NS	`ns3.vinahost.vn` ⭐
	NS	`ns4.vinahost.vn`
	MX	`htdengineering-com.mail.protection.outlook.com` ⭐
	TXT	`MS=ms20480851`
	TXT	`v=spf1 mx include:spf.protection.outlook.com -all`
	SOA	`ns3.vinahost.vn`hostmaster@htdengineering.com 2024-11-28 #1

Previously MX for

htdengineering.com

Same first word

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DNS History

2 records (1 active, 1 former)

○A103.27.237.72017-05-26 → 2017-05-26 · 3 obs

● 2017-05-26 17:03:34
○ 2026-02-18 15:18:56
○ 2026-03-29 18:38:28

●A210.211.108.1042026-02-18 → 2026-03-29 · 3 obs

○ 2017-05-26 17:03:34
● 2026-02-18 15:18:56
● 2026-03-29 18:38:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
htdengineering.com	ns3.vinahost.vn, ns4.vinahost.vn	-

✅ Authoritative Response

Server:123.30.139.119

NS records: ns3.vinahost.vn, ns4.vinahost.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for htdengineering.com (unsigned zone)

⏱️ Timing

Total: 1634ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`210.211.108.104`

Analysis

IP Addresses

mail.htdengineering.com points to a single IP address: 210.211.108.104.

Other host names such as vinapanel.com, dienlanhanhduong.net, www.tamgiang.vn, mail.vanphongthongminh.vn and anbinhexpress.com share IPs with mail.htdengineering.com.

mail.htdengineering.com - robtex.com