`isog.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 2035-06-14 #29

Same first word

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DNS History

7 records (3 active, 4 former)

●NSdns17.hichina.com2026-06-27 → 2026-07-19 · 3 obs

○ 2021-04-11 11:54:32
● 2026-06-27 15:01:26
● 2026-07-19 17:48:28

●NSdns18.hichina.com2026-06-27 → 2026-07-19 · 3 obs

○ 2021-04-11 11:54:32
● 2026-06-27 15:01:26
● 2026-07-19 17:48:28

○NSns.infra.net2015-08-11 → 2017-10-09 · 4 obs

● 2015-08-11 00:22:38
● 2017-10-09 21:28:42
○ 2021-04-11 11:54:32
○ 2026-07-19 17:48:28

○NSns01.infra.net2021-04-11 → 2021-04-11 · 4 obs

○ 2017-10-09 21:28:42
● 2021-04-11 11:54:32
○ 2026-06-27 15:01:26
○ 2026-07-19 17:48:28

○NSns02.infra.net2021-04-11 → 2021-04-11 · 4 obs

○ 2017-10-09 21:28:42
● 2021-04-11 11:54:32
○ 2026-06-27 15:01:26
○ 2026-07-19 17:48:28

○NSns2.infra.net2015-08-11 → 2017-10-09 · 4 obs

● 2015-08-11 00:22:38
● 2017-10-09 21:28:42
○ 2021-04-11 11:54:32
○ 2026-07-19 17:48:28

●CNAMEoverdue.aliyun.com2026-06-27 → 2026-07-19 · 2 obs

● 2026-06-27 15:01:26
● 2026-07-19 17:48:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	b.dns.cn, a.dns.cn, d.dns.cn, e.dns.cn...	-
isog.cn	dns17.hichina.com, dns18.hichina.com	-

✅ Authoritative Response

Server:120.76.107.40

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for isog.cn (unsigned zone)

⏱️ Timing

Total: 1382ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns17.hichina.com, dns18.hichina.com`
CNAME	1	`overdue.aliyun.com`
SOA	1	`dns17.hichina.com hostmaster.hichina.com`

Analysis

IP Addresses

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

Additional host names — 5656hg.com, 1588hg.com, aci1.com and two others — share IP numbers with isog.cn.

isog.cn - robtex.com

isog.cn

cn