`youkuunion.com`

DNSSEC	⚠️ Not signed
NS	`ns1.alibabadns.com` ⚠️ Not in zone NS records
		A	2401:b180:4100::1^{🇨🇳 Alibaba-Cloud2401:b180:4100::/48 Alibaba Cloud}
		A	47.88.74.38^{🇺🇸 Alibaba-Cloud47.88.64.0/18 Alibaba Cloud}
		A	47.241.207.18^{🇸🇬 Alibaba-Cloud47.241.128.0/17 Alibaba CLoud}
		A	106.11.35.19^{🇨🇳 Alibaba-Cloud106.11.32.0/22 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	106.11.41.157^{🇨🇳 Alibaba-Cloud106.11.40.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	140.205.103.192^{🇨🇳 Alibaba-Cloud140.205.64.0/18 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	140.205.122.66^{🇨🇳 Alibaba-Cloud140.205.122.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.24.78^{🇸🇬 Alibaba_Cloud_SEC170.33.24.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
NS	`ns2.alibabadns.com` ⚠️ Not in zone NS records
		A	2401:b180:4100::2^{🇨🇳 Alibaba-Cloud2401:b180:4100::/48 Alibaba Cloud}
		A	47.88.74.36^{🇺🇸 Alibaba-Cloud47.88.64.0/18 Alibaba Cloud}
		A	47.241.207.16^{🇸🇬 Alibaba-Cloud47.241.128.0/17 Alibaba CLoud}
		A	106.11.35.18^{🇨🇳 Alibaba-Cloud106.11.32.0/22 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	106.11.41.158^{🇨🇳 Alibaba-Cloud106.11.40.0/21 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	140.205.103.194^{🇨🇳 Alibaba-Cloud140.205.64.0/18 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	140.205.122.77^{🇨🇳 Alibaba-Cloud140.205.122.0/24 China Internet Network Information Center Floor1, Building No.1 C/-Chinese Academy of Sciences 4, South 4th Street Haidian District,}
		A	170.33.24.76^{🇸🇬 Alibaba_Cloud_SEC170.33.24.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1777031186

Same first word

youkuunion.com

DNS History

4 records (2 active, 2 former)

○NSdns7.hichina.com2008-03-10 → 2017-06-04 · 4 obs

● 2008-03-10 21:13:40
● 2017-06-04 12:37:26
○ 2026-04-05 09:28:00
○ 2026-04-24 12:07:36

○NSdns8.hichina.com2008-03-10 → 2017-06-04 · 4 obs

● 2008-03-10 21:13:40
● 2017-06-04 12:37:26
○ 2026-04-05 09:28:00
○ 2026-04-24 12:07:36

●NSns1.alibabadns.com2026-04-05 → 2026-04-24 · 3 obs

○ 2017-06-04 12:37:26
● 2026-04-05 09:28:00
● 2026-04-24 12:07:36

●NSns2.alibabadns.com2026-04-05 → 2026-04-24 · 3 obs

○ 2017-06-04 12:37:26
● 2026-04-05 09:28:00
● 2026-04-24 12:07:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, i.gtld-servers.net, l.gtld-servers.net, b.gtld-servers.net...	-
youkuunion.com	ns1.alibabadns.com, ns2.alibabadns.com	14 records

✅ Authoritative Response

Server:106.11.35.19

NS records: ns1.alibabadns.com, ns2.alibabadns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for youkuunion.com (unsigned zone)

⏱️ Timing

Total: 3285ms | Queries: -

📄 Records

Type	Count	Sample Data

📌 Glue Records Collected

Total: 14

Out-of-bailiwick: 14 (ns1.alibabadns.com, ns1.alibabadns.com, ns1.alibabadns.com...)

Analysis

Name Servers

youkuunion.com is delegated to two name servers: ns1.alibabadns.com and ns2.alibabadns.com.

youkuunion.com shares the same name server setup as other domains, for example lazcdn.com, u-mob.cn, qwenchat.com, kaola.com.hk and alibabatechqa.com.

youkuunion.com at least partially shares its name servers with other domains, for instance thepacificwsu.com.

Host names with eight IP numbers:

ns1.alibabadns.com points to: 2401:b180:4100::1, 47.88.74.38, 47.241.207.18, 106.11.35.19, 106.11.41.157, 140.205.103.192, 140.205.122.66 and 170.33.24.78

ns2.alibabadns.com points to: 2401:b180:4100::2, 47.88.74.36, 47.241.207.16, 106.11.35.18, 106.11.41.158, 140.205.103.194, 140.205.122.77 and 170.33.24.76

youkuunion.com - robtex.com

youkuunion.com

com