`mdun.cn`

	CNAME	`show.17ex.com`
	DNSSEC	⚠️ Not signed
	A	8.210.157.232^{🇭🇰 Alibaba-Cloud8.210.128.0/17 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}

`cn`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.dns.cn` ⭐
	NS	`b.dns.cn`
	NS	`c.dns.cn`
	NS	`d.dns.cn`
	NS	`e.dns.cn`
	NS	`ns.cernet.net` ⚠️ Not in parent delegation
	SOA	`a.dns.cn`root@cnnic.cn serial=2034593367

Same first word

mdun.cn

mdun.net

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DNS History

7 records (3 active, 4 former)

○NSdns21.hichina.com2015-07-14 → 2017-07-01 · 4 obs

● 2015-07-14 18:30:06
● 2017-07-01 19:03:24
○ 2026-03-26 21:48:38
○ 2026-03-27 11:25:44

○NSdns22.hichina.com2015-07-14 → 2017-07-01 · 4 obs

● 2015-07-14 18:30:06
● 2017-07-01 19:03:24
○ 2026-03-26 21:48:38
○ 2026-03-27 11:25:44

●NSns1.17ex.com2026-03-26 → 2026-03-27 · 3 obs

○ 2017-07-01 19:03:24
● 2026-03-26 21:48:38
● 2026-03-27 11:25:44

●NSns2.17ex.com2026-03-26 → 2026-03-27 · 3 obs

○ 2017-07-01 19:03:24
● 2026-03-26 21:48:38
● 2026-03-27 11:25:44

○MXmx.mail.ym.163.com2015-07-14 → 2016-02-07 · 4 obs

● 2015-07-14 18:30:06
● 2016-02-07 23:05:20
○ 2016-10-11 03:23:22
○ 2026-03-27 11:25:44

○MXmx.ym.163.com2016-10-11 → 2017-07-01 · 5 obs

○ 2016-02-07 23:05:20
● 2016-10-11 03:23:22
● 2017-07-01 19:03:24
○ 2026-03-26 21:48:38
○ 2026-03-27 11:25:44

●CNAMEshow.17ex.com2026-03-26 → 2026-03-27 · 2 obs

● 2026-03-26 21:48:38
● 2026-03-27 11:25:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
mdun.cn	ns1.17ex.com, ns2.17ex.com	-

✅ Authoritative Response

Server:183.253.57.205

NS records: ns1.17ex.com, ns2.17ex.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mdun.cn (unsigned zone)

⏱️ Timing

Total: 1912ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`ns1.17ex.com, ns2.17ex.com`
CNAME	1	`show.17ex.com`
SOA	1	`ns1.17ex.com admin.17ex.com`

Analysis

IP Addresses

mdun.cn points to a single IP number: 8.210.157.232.

Other host names, for instance hocha.com, livs.cn, capitan.cn, carage.cn and 17domain.com share IP numbers with mdun.cn.

mdun.cn - robtex.com

mdun.cn

cn