`byb2b.cn`

DNSSEC	⚠️ Not signed
A	8.138.246.8^{🇨🇳 Alibaba-Cloud8.138.128.0/17 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811}
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 2022-04-27 #11

`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=2035088695

Subdomains

61630.byb2b.cn

hzsc512.byb2b.cn

Same first word

byb2b.cn

Similar names

y2bbb.com

DNS History

5 records (3 active, 2 former)

○NSdns17.hichina.com2026-04-27 → 2026-04-27 · 3 obs

● 2026-04-27 13:36:20
○ 2026-07-03 07:37:04
○ 2026-07-25 15:36:54

○NSdns18.hichina.com2026-04-27 → 2026-04-27 · 3 obs

● 2026-04-27 13:36:20
○ 2026-07-03 07:37:04
○ 2026-07-25 15:36:54

●NSvip3.alidns.com2026-07-03 → 2026-07-25 · 3 obs

○ 2026-04-27 13:36:20
● 2026-07-03 07:37:04
● 2026-07-25 15:36:54

●NSvip4.alidns.com2026-07-03 → 2026-07-25 · 3 obs

○ 2026-04-27 13:36:20
● 2026-07-03 07:37:04
● 2026-07-25 15:36:54

●A8.138.246.82026-04-27 → 2026-07-25 · 2 obs

● 2026-04-27 13:36:20
● 2026-07-25 15:36:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
cn	a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...	-
byb2b.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 byb2b.cn (unsigned zone)

⏱️ Timing

Total: 1840ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`8.138.246.8`
NS	2	`vip4.alidns.com, vip3.alidns.com`
SOA	1	`vip3.alidns.com hostmaster.hichina.com`

Analysis

Hierarchy

byb2b.cn is the parent domain of 61630.byb2b.cn and hzsc512.byb2b.cn.

IP Addresses

byb2b.cn points to a single IP number: 8.138.246.8.

Name Servers

byb2b.cn is served by two delegated name servers, vip3.alidns.com and vip4.alidns.com.

byb2b.cn shares its name server setup with other domains, including lbtek.com, hubcloud.com.cn, wzport.com and two others.

byb2b.cn partially shares its NS delegation with several other domains, including hitfm.cn, viewfruit.com, tyy.21cn.com and two others.

These name servers are regularly seen alongside vip1.alidns.com and vip2.alidns.com as name servers.

Host names with 7 IP numbers:

vip3.alidns.com carries IP addresses 8.212.93.3, 140.205.1.5 and 170.33.32.210, with 4 other addresses beyond those.

vip4.alidns.com carries IP addresses 8.212.93.4, 140.205.1.6 and 170.33.32.211, with 4 other addresses beyond those.

byb2b.cn - robtex.com

byb2b.cn

cn