htdengineering.com - dns.ninja

`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`
NS	`ns3.vinahost.vn` ⭐
		A	125.212.217.199^{🇻🇳 VIETEL-AS-AP125.212.208.0/20 VIETTEL-VN}
NS	`ns4.vinahost.vn`
		A	123.30.139.119^{🇻🇳 VDC123.30.138.0/23 VNPT}
			PTR	`static.vnpt.vn`
MX	`htdengineering-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:cc09::^{🇸🇬 Microsoft2a01:111:f000::/36}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1a::8^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-tydpr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:cc1f::4^{🇯🇵 Microsoft2a01:111:f000::/36}
			PTR	`mail-os8pr02cu00104.inbound.protection.outlook.com`
		A	52.101.124.117^{🇯🇵 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-tydpr03cu00105.inbound.protection.outlook.com`
		A	52.101.137.0^{🇸🇬 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sg2pr03cu00500.inbound.protection.outlook.com`
		A	52.101.157.80^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-os8pr02cu00100.inbound.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

`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=1784991317

Subdomains

mail.htdengineering.com

Same first word

htdengineering.com

htdengineering.vn

DNS History

18 records (4 active, 14 former)

○NSdns1.name-services.com2016-04-05 → 2017-05-26 · 5 obs

○ 2015-12-31 15:09:40
● 2016-04-05 16:27:32
● 2017-05-26 17:03:14
○ 2026-02-18 15:18:54
○ 2026-07-25 15:07:44

○NSdns2.name-services.com2016-04-05 → 2017-05-26 · 5 obs

○ 2015-12-31 15:09:40
● 2016-04-05 16:27:32
● 2017-05-26 17:03:14
○ 2026-02-18 15:18:54
○ 2026-07-25 15:07:44

○NSdns3.name-services.com2016-04-05 → 2017-05-26 · 5 obs

○ 2015-12-31 15:09:40
● 2016-04-05 16:27:32
● 2017-05-26 17:03:14
○ 2026-02-18 15:18:54
○ 2026-07-25 15:07:44

○NSdns4.name-services.com2016-04-05 → 2017-05-26 · 5 obs

○ 2015-12-31 15:09:40
● 2016-04-05 16:27:32
● 2017-05-26 17:03:14
○ 2026-02-18 15:18:54
○ 2026-07-25 15:07:44

○NSdns5.name-services.com2016-04-05 → 2017-05-26 · 5 obs

○ 2015-12-31 15:09:40
● 2016-04-05 16:27:32
● 2017-05-26 17:03:14
○ 2026-02-18 15:18:54
○ 2026-07-25 15:07:44

○NSns1.catalog.com2015-05-25 → 2015-10-28 · 4 obs

● 2015-05-25 21:25:46
● 2015-10-28 19:34:32
○ 2015-12-31 15:09:40
○ 2026-07-25 15:07:44

○NSns2.catalog.com2015-05-25 → 2015-10-28 · 4 obs

● 2015-05-25 21:25:46
● 2015-10-28 19:34:32
○ 2015-12-31 15:09:40
○ 2026-07-25 15:07:44

○NSns3.catalog.com2015-05-25 → 2015-10-28 · 4 obs

● 2015-05-25 21:25:46
● 2015-10-28 19:34:32
○ 2015-12-31 15:09:40
○ 2026-07-25 15:07:44

●NSns3.vinahost.vn2026-02-18 → 2026-07-25 · 6 obs

○ 2017-05-26 17:03:14
● 2026-02-18 15:18:54
● 2026-05-01 16:32:10
○ 2026-05-01 17:44:48
● 2026-05-06 14:12:16
● 2026-07-25 15:07:44

●NSns4.vinahost.vn2026-02-18 → 2026-07-25 · 6 obs

○ 2017-05-26 17:03:14
● 2026-02-18 15:18:54
● 2026-05-01 16:32:10
○ 2026-05-01 17:44:48
● 2026-05-06 14:12:16
● 2026-07-25 15:07:44

●MXhtdengineering-com.mail.protection.outlook.com2026-02-18 → 2026-07-25 · 6 obs

○ 2017-05-26 17:03:14
● 2026-02-18 15:18:54
● 2026-05-01 16:32:10
○ 2026-05-01 17:44:48
● 2026-05-06 14:12:16
● 2026-07-25 15:07:44

○MXmail.htdengineering.com2017-05-26 → 2017-05-26 · 4 obs

○ 2015-12-31 15:09:40
● 2017-05-26 17:03:14
○ 2026-02-18 15:18:54
○ 2026-07-25 15:07:44

○MXmx1.webhero.com2015-05-25 → 2015-10-28 · 4 obs

● 2015-05-25 21:25:46
● 2015-10-28 19:34:32
○ 2015-12-31 15:09:40
○ 2026-07-25 15:07:44

○MXmx2.webhero.com2015-05-25 → 2015-10-28 · 4 obs

● 2015-05-25 21:25:46
● 2015-10-28 19:34:32
○ 2015-12-31 15:09:40
○ 2026-07-25 15:07:44

○A103.27.237.72016-11-19 → 2017-05-26 · 5 obs

○ 2016-04-05 16:27:32
● 2016-11-19 18:41:02
● 2017-05-26 17:03:14
○ 2026-02-18 15:18:54
○ 2026-07-25 15:07:44

○A103.27.238.1062016-04-05 → 2016-04-05 · 4 obs

○ 2015-12-31 15:09:40
● 2016-04-05 16:27:32
○ 2016-11-19 18:41:02
○ 2026-07-25 15:07:44

○A209.217.33.2252015-05-25 → 2015-10-28 · 4 obs

● 2015-05-25 21:25:46
● 2015-10-28 19:34:32
○ 2015-12-31 15:09:40
○ 2026-07-25 15:07:44

●A210.211.108.1042026-02-18 → 2026-07-25 · 6 obs

○ 2017-05-26 17:03:14
● 2026-02-18 15:18:54
● 2026-05-01 16:32:10
○ 2026-05-01 17:44:48
● 2026-05-06 14:12:16
● 2026-07-25 15:07:44

🔍 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:125.212.217.199

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for htdengineering.com (unsigned zone)

⏱️ Timing

Total: 4303ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`210.211.108.104`
NS	2	`ns4.vinahost.vn, ns3.vinahost.vn`
MX	1	`htdengineering-com.mail.protection.outlo`
TXT	2	`MS=ms20480851, v=spf1 mx include:spf.protection.outlook`
SOA	1	`ns3.vinahost.vn hostmaster.htdengineerin`

Analysis

Hierarchy

htdengineering.com is the parent zone for mail.htdengineering.com.

IP Addresses

htdengineering.com resolves to just one IP address, 210.211.108.104.

Two other host names, along with tamgiang.vn, xiudun.net.vn and dienlanhanhduong.com, also share IP numbers with htdengineering.com.

Name Servers

DNS delegation for htdengineering.com points to two name servers: ns3.vinahost.vn and ns4.vinahost.vn.

htdengineering.com shares its NS records with other domains, for example yennuitayninh.vn, vrvietnam.vn, lamatiles.com.vn and two others.

htdengineering.com partially shares its NS delegation with several other domains, including ibp.vn, vietphat.com.vn, seoplus.vn and two others.

These name servers are regularly seen alongside dns3.vina-host.com and dns4.vina-host.com as name servers.

ns3.vinahost.vn resolves to 125.212.217.199. ns4.vinahost.vn resolves to 123.30.139.119. Both host names point to a single IP number.

Mail Servers

The sole mail server for htdengineering.com is htdengineering-com.mail.protection.outlook.com.

With 6 IP addresses total, htdengineering-com.mail.protection.outlook.com resolves to 52.101.124.117, 52.101.137.0, 52.101.157.80 and 3 others.