`12003.cn`

	CNAME	`overdue.aliyun.com`
	DNSSEC	⚠️ Not signed
	A	170.33.12.185^{🇸🇬 Alibaba_Cloud_SEC170.33.12.0/24 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=2035099261

Same first word

12003.com

12003.my

12003.cn

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DNS History

6 records (5 active, 1 former)

●NSdns31.hichina.com2015-08-10 → 2026-07-28 · 2 obs

● 2015-08-10 03:17:40
● 2026-07-28 02:11:22

●NSdns32.hichina.com2015-08-10 → 2026-07-28 · 2 obs

● 2015-08-10 03:17:40
● 2026-07-28 02:11:22

●MXmxbiz1.qq.com2015-08-10 → 2026-07-28 · 7 obs

● 2015-08-10 03:17:40
● 2026-06-04 10:16:38
○ 2026-06-24 16:03:46
● 2026-06-26 23:28:34
○ 2026-07-03 09:30:14
● 2026-07-14 19:03:10
● 2026-07-28 02:11:22

●MXmxbiz2.qq.com2015-08-10 → 2026-07-28 · 7 obs

● 2015-08-10 03:17:40
● 2026-06-04 10:16:38
○ 2026-06-24 16:03:46
● 2026-06-26 23:28:34
○ 2026-07-03 09:30:14
● 2026-07-14 19:03:10
● 2026-07-28 02:11:22

○A111.40.214.1382016-12-11 → 2018-06-24 · 4 obs

● 2016-12-11 22:02:30
● 2018-06-24 05:28:38
○ 2026-05-19 12:06:42
○ 2026-07-28 02:11:22

●CNAMEoverdue.aliyun.com2026-05-19 → 2026-07-28 · 7 obs

● 2026-05-19 12:06:42
● 2026-06-04 10:16:38
○ 2026-06-24 16:03:46
● 2026-06-26 23:28:34
○ 2026-07-03 09:30:14
● 2026-07-14 19:03:10
● 2026-07-28 02:11:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
12003.cn	dns31.hichina.com, dns32.hichina.com	-

✅ Authoritative Response

Server:139.224.142.109

NS records: dns31.hichina.com, dns32.hichina.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 12003.cn (unsigned zone)

⏱️ Timing

Total: 1739ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns32.hichina.com, dns31.hichina.com`
MX	2	`mxbiz2.qq.com (pri: 10), mxbiz1.qq.com (pri: 5)`
TXT	1	`v=spf1 include:spf.mail.qq.com ~all`
CNAME	1	`overdue.aliyun.com`
SOA	1	`dns31.hichina.com hostmaster.hichina.com`

Analysis

IP Addresses

12003.cn points to a single IP number: 170.33.12.185.

Additional host names — buchaoxi.com, 5656hg.com, 1588hg.com and two others — share IP numbers with 12003.cn.

12003.cn - robtex.com

12003.cn

cn