`thanhcongsolutions.com`

DNSSEC	⚠️ Not signed
A	171.244.28.18^{🇻🇳 VTDC-AS-VN171.244.28.0/24 Proxy-registered route object}
NS	`ns1.viettelidc.com.vn` ⭐
		A	2401:5f80:2000:2::4^{🇻🇳 VTDC-AS-VN2401:5f80:2000::/36 VTDC-VN}
		A	115.84.177.33^{🇻🇳 VTDC-AS-VN115.84.176.0/22 Proxy-registered route object}
			PTR	`ns1.vtdc.net`
			PTR	`ns1.viettelidc.com.vn`
NS	`ns.viettelidc.com.vn`
		A	2401:5f80:2000:1::5^{🇻🇳 VTDC-AS-VN2401:5f80:2000::/36 VTDC-VN}
		A	115.84.177.8^{🇻🇳 VTDC-AS-VN115.84.176.0/22 Proxy-registered route object}
			PTR	`ns.vtdc.net`
			PTR	`ns.viettelidc.com.vn`
NS	`ns2.viettelidc.com.vn`
		A	2401:5f80:4000:1::4^{🇻🇳 VTDC-AS-VN2401:5f80:4000::/36 VTDC-VN}
		A	115.84.181.10^{🇻🇳 VTDC-AS-VN115.84.180.0/22 Proxy-registered route object}
			PTR	`ns2.vtdc.net`
			PTR	`ns2.viettelidc.com.vn`
MX	`mx.viettelidc.com.vn` ⭐
		A	103.1.208.155^{🇻🇳 VTDC-AS-VN103.1.208.0/22 Proxy-registered route object}
			PTR	`hl-smtp01.viettelidc.com.vn`
		A	103.1.208.156^{🇻🇳 VTDC-AS-VN103.1.208.0/22 Proxy-registered route object}
			PTR	`hl-smtp02.viettelidc.com.vn`
TXT	`v=spf1 ip4:103.1.208.0/24 a mx ~all`
TXT	`google-site-verification=48f306-FXFaXKCRIRwe3z-judjxEM2V6QKkVqk2HWdU`
TXT	`_globalsign-domain-verification=kzaUgr5Qj_t5vFPz3H5UhuVzbCJj9SAgPr8lViV3Yt`
TXT	`_globalsign-domain-verification=0YhbxjyPLT9XaRazvFMUdynv4L57BWXUPNC7y_zeFp`
TXT	`_globalsign-domain-verification=jkH3A-ox8AElhqrp43ylzyF5dBETBuBxTXYgiJm9DM`
TXT	`_globalsign-domain-verification=w2SoOTapWj9efUVUOGuf4c3SFqGNq7cmaGmfL14zN9`
TXT	`_globalsign-domain-verification=yNpT3APYiSTT98BzcEqGkzZZp6WCGPUa_8Fs2peWkI`
SOA	`ns.viettelidc.com.vn`hostmaster@thanhcongsolutions.com serial=1778511308

`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=1778511391

Subdomains

www.thanhcongsolutions.com

Same first word

thanhcongsolutions.com

DNS History

6 records (5 active, 1 former)

●NSns.viettelidc.com.vn2019-12-15 → 2026-05-11 · 2 obs

● 2019-12-15 01:04:18
● 2026-05-11 14:57:54

●NSns1.viettelidc.com.vn2019-12-15 → 2026-05-11 · 2 obs

● 2019-12-15 01:04:18
● 2026-05-11 14:57:54

●NSns2.viettelidc.com.vn2019-12-15 → 2026-05-11 · 2 obs

● 2019-12-15 01:04:18
● 2026-05-11 14:57:54

●MXmx.viettelidc.com.vn2026-05-01 → 2026-05-11 · 2 obs

● 2026-05-01 08:56:58
● 2026-05-11 14:57:54

●A171.244.28.182026-05-01 → 2026-05-11 · 3 obs

○ 2019-12-15 01:04:18
● 2026-05-01 08:56:58
● 2026-05-11 14:57:54

○A210.211.113.1452019-12-15 → 2019-12-15 · 3 obs

● 2019-12-15 01:04:18
○ 2026-05-01 08:56:58
○ 2026-05-11 14:57:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
thanhcongsolutions.com	ns1.viettelidc.com.vn, ns2.viettelidc.com.vn, ns.viettelidc.com.vn	-

✅ Authoritative Response

Server:115.84.177.8

NS records: ns1.viettelidc.com.vn, ns2.viettelidc.com.vn, ns.viettelidc.com.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for thanhcongsolutions.com (unsigned zone)

⏱️ Timing

Total: 1644ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`171.244.28.18`
NS	3	`ns.viettelidc.com.vn, ns1.viettelidc.com.vn...`
MX	1	`mx.viettelidc.com.vn (pri: 10)`
TXT	7	`v=spf1 ip4:103.1.208.0/24 a mx ~all, google-site-verification=48f306-FXFaXKCR...`
SOA	1	`ns.viettelidc.com.vn hostmaster.thanhcon`

Analysis

Hierarchy

thanhcongsolutions.com is the parent of www.thanhcongsolutions.com.

IP Addresses

thanhcongsolutions.com points to a single IP number: 171.244.28.18.

Other host names like tcss.com.vn and www.tcss.com.vn share IP numbers with thanhcongsolutions.com.

Name Servers

thanhcongsolutions.com is delegated to three name servers: ns1.viettelidc.com.vn, ns2.viettelidc.com.vn and ns.viettelidc.com.vn.

thanhcongsolutions.com at least partially shares name servers with other domains, for instance dinostaraluminium.com, duthuyensonghong.com, maivillahotel.vn, photoclub.vn and naccet.vn.

These name servers are commonly used with ns1.vtdc.net, ns2.vtdc.net and ns.vtdc.net.

Host names with two IP numbers:

Host ns1.viettelidc.com.vn points to 2401:5f80:2000:2::4 and 115.84.177.33.

Host ns2.viettelidc.com.vn points to 2401:5f80:4000:1::4 and 115.84.181.10.

Host ns.viettelidc.com.vn points to 2401:5f80:2000:1::5 and 115.84.177.8.

Mail Servers

thanhcongsolutions.com is handled by a single mail server, mx.viettelidc.com.vn.

thanhcongsolutions.com shares the same mail server setup as other domains, for instance xuantruongtransport.com.vn, thithptquocgia.edu.vn, xcanopy.com, leadingstar.com.vn and telinme.vn.

thanhcongsolutions.com shares mail servers with other domains at least partially, including wabipremium.vn, tnh.com.vn, haprogroup.vn, catnghitea.com and stecvina.com.

Host mx.viettelidc.com.vn resolves to two IPs: 103.1.208.155 and 103.1.208.156.

thanhcongsolutions.com - robtex.com