`viettech88.vn`

DNSSEC	⚠️ Not signed
A	139.180.202.41^{🇯🇵 AS-VULTR139.180.192.0/20 The Constant Company, LLC 319 CLEMATIS ST Suite 900}
		PTR	`139.180.202.41.vultrusercontent.com`
NS	`ns1.matbao.com` ⭐ ⚠️ Not in parent delegation
		A	13.250.228.99^{🇸🇬 Amazon13.250.0.0/15 EC2 SIN prefix}
			PTR	`ec2-13-250-228-99.ap-southeast-1.compute.amazonaws.com`
		A	103.110.128.60^{🇻🇳 AXYS-VN103.110.128.0/23}
NS	`ns1.matbao.vn` ⚠️ Not in zone NS records
		A	13.250.228.99^{🇸🇬 Amazon13.250.0.0/15 EC2 SIN prefix}
			PTR	`ec2-13-250-228-99.ap-southeast-1.compute.amazonaws.com`
		A	103.110.128.60^{🇻🇳 AXYS-VN103.110.128.0/23}
NS	`ns2.matbao.com` ⚠️ Not in parent delegation
		A	35.198.203.127^{🇸🇬 Google35.198.192.0/20}
			PTR	`127.203.198.35.bc.googleusercontent.com`
		A	103.138.89.11^{🇻🇳 VNPT-AS-VN103.138.88.0/23 VNPT-NET}
NS	`ns2.matbao.vn` ⚠️ Not in zone NS records
		A	35.198.203.127^{🇸🇬 Google35.198.192.0/20}
			PTR	`127.203.198.35.bc.googleusercontent.com`
		A	103.138.89.11^{🇻🇳 VNPT-AS-VN103.138.88.0/23 VNPT-NET}
MX	`mail.viettech88.vn` ⭐
TXT	`v=spf1 mx include:45.32.125.21 -all`
SOA	`ns1.matbao.com`admin@matbao.com 2026-03-13 #1

`vn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`dns-master.vnnic.vn` ⭐
	NS	`a.dns-servers.vn`
	NS	`b.dns-servers.vn`
	NS	`c.dns-servers.vn`
	NS	`d.dns-servers.vn`
	NS	`e.dns-servers.vn`
	NS	`f.dns-servers.vn`
	NS	`g.dns-servers.vn`
	NS	`h.dns-servers.vn`
	SOA	`dns-master.vnnic.vn`postmaster@vnnic.vn serial=2030754181

Subdomains

www.viettech88.vn

Same first word

viettech88.vn

viettech88.com

DNS History

11 records (6 active, 5 former)

●NSns1.matbao.com2026-03-07 → 2026-05-10 · 3 obs

○ 2018-08-26 20:20:06
● 2026-03-07 23:07:08
● 2026-05-10 06:41:28

●NSns1.matbao.vn2026-03-07 → 2026-05-10 · 3 obs

○ 2018-08-26 20:20:06
● 2026-03-07 23:07:08
● 2026-05-10 06:41:28

○NSns1.zonedns.vn2018-08-26 → 2018-08-26 · 3 obs

● 2018-08-26 20:20:06
○ 2026-03-07 23:07:08
○ 2026-05-10 06:41:28

●NSns2.matbao.com2026-03-07 → 2026-05-10 · 3 obs

○ 2018-08-26 20:20:06
● 2026-03-07 23:07:08
● 2026-05-10 06:41:28

●NSns2.matbao.vn2026-03-07 → 2026-05-10 · 3 obs

○ 2018-08-26 20:20:06
● 2026-03-07 23:07:08
● 2026-05-10 06:41:28

○NSns2.zonedns.vn2018-08-26 → 2018-08-26 · 3 obs

● 2018-08-26 20:20:06
○ 2026-03-07 23:07:08
○ 2026-05-10 06:41:28

○NSns3.zonedns.vn2018-08-26 → 2018-08-26 · 3 obs

● 2018-08-26 20:20:06
○ 2026-03-07 23:07:08
○ 2026-05-10 06:41:28

●MXmail.viettech88.vn2026-03-07 → 2026-05-10 · 2 obs

● 2026-03-07 23:07:08
● 2026-05-10 06:41:28

○A103.101.161.1272018-08-26 → 2018-08-26 · 3 obs

● 2018-08-26 20:20:06
○ 2026-03-07 23:07:08
○ 2026-05-10 06:41:28

●A139.180.202.412026-03-23 → 2026-05-10 · 3 obs

○ 2026-03-09 08:52:00
● 2026-03-23 09:24:02
● 2026-05-10 06:41:28

○A45.32.125.212026-03-07 → 2026-03-09 · 5 obs

○ 2018-08-26 20:20:06
● 2026-03-07 23:07:08
● 2026-03-09 08:52:00
○ 2026-03-23 09:24:02
○ 2026-05-10 06:41:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	a.dns-servers.vn, b.dns-servers.vn, c.dns-servers.vn, d.dns-servers.vn...	-
viettech88.vn	ns2.matbao.vn, ns1.matbao.vn	2 records

✅ Authoritative Response

Server:13.250.228.99

NS records: ns2.matbao.vn, ns1.matbao.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for viettech88.vn (unsigned zone)

⏱️ Timing

Total: 1425ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`139.180.202.41`
NS	2	`ns1.matbao.com, ns2.matbao.com`
MX	1	`mail.viettech88.vn (pri: 10)`
TXT	1	`v=spf1 mx include:45.32.125.21 -all`
SOA	1	`ns1.matbao.com admin.matbao.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.matbao.vn, ns2.matbao.vn)

Analysis

Hierarchy

viettech88.vn is the parent of www.viettech88.vn.

IP Addresses

viettech88.vn resolves to one IP number: 139.180.202.41.

Other host names, for instance sanxecu.vn, share IP numbers with viettech88.vn.

Name Servers

viettech88.vn is delegated to four name servers: ns1.matbao.com, ns2.matbao.com, ns1.matbao.vn and ns2.matbao.vn.

viettech88.vn at least partially shares name servers with other domains, for instance ruoubauda.net, chainhuacaocap.com, manhcuong.vn, top1.com.vn and huphaco.com.