`mail.yuncooltech.com`

	DNSSEC	⚠️ Not signed
	A	139.159.216.154^{🇨🇳 HWCSNET139.159.208.0/20 Huawei Clouds Guangzhou Region}

`yuncooltech.com`

	DNSSEC	⚠️ Not signed
	NS	`dns17.hichina.com` ⭐
	NS	`dns18.hichina.com`
	MX	`mail.yuncooltech.com` ⭐
	SOA	`dns17.hichina.com`hostmaster@hichina.com 2026-01-12 #9

MX for

yuncooltech.com

Same first word

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DNS History

2 records (1 active, 1 former)

○A121.199.3.812015-05-05 → 2016-11-09 · 4 obs

● 2015-05-05 23:31:46
● 2016-11-09 07:09:04
○ 2026-03-26 11:47:06
○ 2026-07-25 06:53:00

●A139.159.216.1542026-03-26 → 2026-07-25 · 3 obs

○ 2016-11-09 07:09:04
● 2026-03-26 11:47:06
● 2026-07-25 06:53:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, g.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net...	-
yuncooltech.com	dns17.hichina.com, dns18.hichina.com	18 records

✅ Authoritative Response

Server:120.76.107.38

NS records: dns17.hichina.com, dns18.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for yuncooltech.com (unsigned zone)

⏱️ Timing

Total: 571ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`139.159.216.154`

📌 Glue Records Collected

Total: 18

Out-of-bailiwick: 18 (dns17.hichina.com, dns17.hichina.com, dns17.hichina.com...)

Analysis

Mail Server Role

mail.yuncooltech.com is a mail server for yuncooltech.com.

IP Addresses

mail.yuncooltech.com directs to one IP number, which is 139.159.216.154.

mi.xmeye.net and downloads.xm030.cn, along with other host names, share IP addresses with mail.yuncooltech.com.

mail.yuncooltech.com - robtex.com