`yyback.cn`

DNSSEC	⚠️ Not signed
NS	`vip3.alidns.com` ⭐
		A	2408:4009:500::3^{🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group}
		A	8.212.93.3^{🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	140.205.1.5^{🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.32.210^{🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.40.136^{🇸🇬 Alibaba_Cloud_SEC170.33.40.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.73.26^{🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.80.10^{🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
NS	`vip4.alidns.com`
		A	2408:4009:500::4^{🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group}
		A	8.212.93.4^{🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	140.205.1.6^{🇨🇳 Alibaba-Cloud140.205.1.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.32.211^{🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.40.137^{🇸🇬 Alibaba_Cloud_SEC170.33.40.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.73.27^{🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
		A	170.33.80.11^{🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
SOA	`vip3.alidns.com`hostmaster@hichina.com 2026-07-03 #4

`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=2035149742

Subdomains

lookup.yyback.cn

Same first word

yyback.cn

DNS History

4 records (2 active, 2 former)

○NSdns31.hichina.com2026-04-21 → 2026-04-21 · 3 obs

● 2026-04-21 09:38:10
○ 2026-07-08 08:34:48
○ 2026-08-06 21:08:50

○NSdns32.hichina.com2026-04-21 → 2026-04-21 · 3 obs

● 2026-04-21 09:38:10
○ 2026-07-08 08:34:48
○ 2026-08-06 21:08:50

●NSvip3.alidns.com2026-07-08 → 2026-08-06 · 3 obs

○ 2026-04-21 09:38:10
● 2026-07-08 08:34:48
● 2026-08-06 21:08:50

●NSvip4.alidns.com2026-07-08 → 2026-08-06 · 3 obs

○ 2026-04-21 09:38:10
● 2026-07-08 08:34:48
● 2026-08-06 21:08:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	e.dns.cn, a.dns.cn, c.dns.cn, d.dns.cn...	-
yyback.cn	vip3.alidns.com, vip4.alidns.com	-

✅ Authoritative Response

Server:170.33.80.10

NS records: vip3.alidns.com, vip4.alidns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for yyback.cn (unsigned zone)

⏱️ Timing

Total: 1293ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`vip4.alidns.com, vip3.alidns.com`
SOA	1	`vip3.alidns.com hostmaster.hichina.com`

Analysis

Hierarchy

yyback.cn is the parent zone for lookup.yyback.cn.

Name Servers

DNS delegation for yyback.cn points to two name servers: vip3.alidns.com and vip4.alidns.com.

yyback.cn has the same name server delegation as a number of other domains, such as windeyenergy.com, newcapec.cn, sail-go.com and two more.

There is an overlap in name servers between yyback.cn and other domains, for example julivip.sbs, jaadee.net and tuboshu.com

Host names resolving to 7 IP numbers:

vip3.alidns.com has IP addresses 8.212.93.3, 140.205.1.5 and 170.33.32.210, plus 4 other.

vip4.alidns.com has IP addresses 8.212.93.4, 140.205.1.6 and 170.33.32.211, plus 4 other.

yyback.cn - robtex.com

yyback.cn

cn