`congtynoithat.vn`

DNSSEC	⚠️ Not signed
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.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}

`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=2030753553

Same first word

congtynoithat.vn

congtynoithat.com

DNS History

7 records (2 active, 5 former)

○NSns1.ahdsoft.vn2015-07-05 → 2017-02-10 · 7 obs

● 2015-07-05 06:48:30
● 2015-11-13 09:24:58
○ 2016-03-02 14:55:48
● 2016-06-21 15:47:54
● 2017-02-10 18:07:04
○ 2026-05-02 03:11:02
○ 2026-05-09 21:42:28

●NSns1.matbao.vn2026-05-02 → 2026-05-09 · 3 obs

○ 2017-02-10 18:07:04
● 2026-05-02 03:11:02
● 2026-05-09 21:42:28

○NSns2.ahdsoft.vn2015-07-05 → 2017-02-10 · 7 obs

● 2015-07-05 06:48:30
● 2015-11-13 09:24:58
○ 2016-03-02 14:55:48
● 2016-06-21 15:47:54
● 2017-02-10 18:07:04
○ 2026-05-02 03:11:02
○ 2026-05-09 21:42:28

●NSns2.matbao.vn2026-05-02 → 2026-05-09 · 3 obs

○ 2017-02-10 18:07:04
● 2026-05-02 03:11:02
● 2026-05-09 21:42:28

○MXmail.congtynoithat.vn2015-07-05 → 2017-02-10 · 7 obs

● 2015-07-05 06:48:30
● 2015-11-13 09:24:58
○ 2016-03-02 14:55:48
● 2016-06-21 15:47:54
● 2017-02-10 18:07:04
○ 2026-05-02 03:11:02
○ 2026-05-09 21:42:28

○A124.158.4.692015-07-05 → 2017-02-10 · 7 obs

● 2015-07-05 06:48:30
● 2015-11-13 09:24:58
○ 2016-03-02 14:55:48
● 2016-06-21 15:47:54
● 2017-02-10 18:07:04
○ 2026-05-02 03:11:02
○ 2026-05-09 21:42:28

○A203.119.8.1072016-03-02 → 2016-03-02 · 4 obs

○ 2015-11-13 09:24:58
● 2016-03-02 14:55:48
○ 2016-06-21 15:47:54
○ 2026-05-09 21:42:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	h.dns-servers.vn, d.dns-servers.vn, f.dns-servers.vn, e.dns-servers.vn...	-
congtynoithat.vn	ns2.matbao.vn, ns1.matbao.vn	2 records

✅ Authoritative Response

Server:103.138.89.11

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

🔒 DNSSEC Status

❌ Bogus (DNSSEC validation failed)

Validation error at vn: Error: DNS query timeout: 202.47.142.105 for DNSKEY vn

⏱️ Timing

Total: 4030ms | Queries: -

📄 Records

Type	Count	Sample Data

📌 Glue Records Collected

Total: 2

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

Analysis

Name Servers

Two name servers ns1.matbao.vn and ns2.matbao.vn are delegated to congtynoithat.vn.

congtynoithat.vn uses the same name server configuration as other domains, such as nvgate.vn, vumigroup.vn, vbooks.vn, ximangthanhthang.vn and tachdiachi.vn.

congtynoithat.vn at least partially shares name servers with other domains such as tuihutchankhong.net, filmore.com.vn, bachacumin.vn, thiennguyenphu.com.vn and dongjintextile.com.vn.

These name servers are commonly used with ns1.matbao.com, ns2.matbao.com, ns-bak.matbao.com and ns1.digipowerdns.com.

Host names with two IPs:

ns1.matbao.vn points to 13.250.228.99 and 103.110.128.60.

ns2.matbao.vn points to 35.198.203.127 and 103.138.89.11.

congtynoithat.vn - robtex.com