`mail.kinhtek21.com`

DNSSEC	⚠️ Not signed
A	124.158.9.15^{🇻🇳 CMC-3124.158.9.0/24 CMCTELECOM-VN}
		PTR	`vps04.rith-tech.com`

`kinhtek21.com`

	DNSSEC	🔒 Signed (DS record present)
	A	124.158.9.15^{🇻🇳 CMC-3124.158.9.0/24 CMCTELECOM-VN}
	NS	`ns-a2.tenten.vn` ⭐
	NS	`ns-a1.tenten.vn`
	NS	`ns-a3.tenten.vn`
	MX	`mail.kinhtek21.com` ⭐
	TXT	`v=spf1mxaip4:124.158.9.15~all`
	SOA	`ns-a2.tenten.vn`noreply@tenten.vn serial=1753670426

MX for

kinhtek21.com

Same first word

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DNS History

1 record (1 active, 0 former)

●A124.158.9.152026-03-10 → 2026-03-27 · 2 obs

● 2026-03-10 13:38:14
● 2026-03-27 08:01:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	i.gtld-servers.net, j.gtld-servers.net, d.gtld-servers.net, l.gtld-servers.net...	-
kinhtek21.com	ns-a2.tenten.vn, ns-a3.tenten.vn, ns-a1.tenten.vn	-

✅ Authoritative Response

Server:137.59.104.65

NS records: ns-a2.tenten.vn, ns-a3.tenten.vn, ns-a1.tenten.vn

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1715ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`124.158.9.15`

Analysis

Mail Server Role

mail.kinhtek21.com functions as a mail server for kinhtek21.com.

IP Addresses

mail.kinhtek21.com resolves to one IP number: 124.158.9.15.

Other host names, for instance thanhdongct.com, mail.katec.vn, kinhtek21.com and katec.vn share IP numbers with mail.kinhtek21.com.

mail.kinhtek21.com - robtex.com