`mail.cssk.vn`

CNAME	`cssk.vn`
DNSSEC	⚠️ Not signed
A	103.221.221.50^{🇻🇳 AZDIGI-AS-VN103.221.220.0/22 AZDIGI-VN}
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.cssk.vn` ⭐
TXT	`v=spf1 mx include:103.221.221.50 -all`
SOA	`ns1.matbao.com`admin@matbao.com 2025-04-19 #8

`cssk.vn`

	DNSSEC	⚠️ Not signed
	A	103.221.221.50^{🇻🇳 AZDIGI-AS-VN103.221.220.0/22 AZDIGI-VN}
	NS	`ns1.matbao.com` ⭐ ⚠️ Not in parent delegation
	NS	`ns1.matbao.vn` ⚠️ Not in zone NS records
	NS	`ns2.matbao.com` ⚠️ Not in parent delegation
	NS	`ns2.matbao.vn` ⚠️ Not in zone NS records
	MX	`mail.cssk.vn` ⭐
	TXT	`v=spf1 mx include:103.221.221.50 -all`
	SOA	`ns1.matbao.com`admin@matbao.com 2025-04-19 #8

MX for

cssk.vn

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DNS History

1 record (1 active, 0 former)

●CNAMEcssk.vn2026-05-01 → 2026-05-10 · 2 obs

● 2026-05-01 16:52:38
● 2026-05-10 09:53:02

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:103.138.89.11

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cssk.vn (unsigned zone)

⏱️ Timing

Total: 1326ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`cssk.vn`

📌 Glue Records Collected

Total: 2

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

Analysis

Mail Server Role

mail.cssk.vn serves as the mail server for cssk.vn.

IP Addresses

mail.cssk.vn resolves to a single IP address: 103.221.221.50.

Other host names including tilekeobongda.com.benhvienhoabinh.vn, cote-juventus-inter-milan.benhvienhoabinh.vn, xaydungngocphat.com, mcohome.vn and cssk.vn share IP numbers with mail.cssk.vn.

Name Servers

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

mail.cssk.vn at least partially shares name servers with other domains, including unicjsc.com, peha.com.vn, ketsatgunngard.com, aibooks.vn and bemec.vn.