`rdrs.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=2034663584

Same first word

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rdrs.cn

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DNS History

5 records (3 active, 2 former)

●NSdns31.hichina.com2026-04-11 → 2026-04-12 · 3 obs

○ 2015-12-06 02:32:30
● 2026-04-11 03:08:30
● 2026-04-12 21:20:20

●NSdns32.hichina.com2026-04-11 → 2026-04-12 · 3 obs

○ 2015-12-06 02:32:30
● 2026-04-11 03:08:30
● 2026-04-12 21:20:20

○NSns1.alidns.com2015-08-18 → 2015-12-06 · 4 obs

● 2015-08-18 18:45:20
● 2015-12-06 02:32:30
○ 2026-04-11 03:08:30
○ 2026-04-12 21:20:20

○NSns2.alidns.com2015-08-18 → 2015-12-06 · 4 obs

● 2015-08-18 18:45:20
● 2015-12-06 02:32:30
○ 2026-04-11 03:08:30
○ 2026-04-12 21:20:20

●CNAMEoverdue.aliyun.com2026-04-11 → 2026-04-12 · 2 obs

● 2026-04-11 03:08:30
● 2026-04-12 21:20:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, e.dns.cn, c.dns.cn, d.dns.cn...	-
rdrs.cn	dns31.hichina.com, dns32.hichina.com	-

✅ Authoritative Response

Server:47.118.199.219

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rdrs.cn (unsigned zone)

⏱️ Timing

Total: 1816ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns31.hichina.com, dns32.hichina.com`
CNAME	1	`overdue.aliyun.com`
SOA	1	`dns31.hichina.com hostmaster.hichina.com`

Analysis

IP Addresses

rdrs.cn points to a single IP address: 170.33.12.185.

Other host names such as gdnba.cn, samhua.cn, mldm.cn, overdue.aliyun.com and fkcx.cn share IPs with rdrs.cn.

rdrs.cn - robtex.com

rdrs.cn

cn