51321.cn - robtex.com
51321.cn
| DNSSEC | ⚠️ Not signed | ||||||
| A | 111.231.100.68🇨🇳 TENCENT-NET-AP111.231.100.0/22 | ||||||
| NS | vip1.alidns.com ⭐ | ||||||
| A | 2408:4009:500::1🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group | ||||||
| A | 8.212.93.1🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 140.205.1.1🇨🇳 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 | 170.33.32.208🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 170.33.73.24🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 170.33.80.8🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| NS | vip2.alidns.com | ||||||
| A | 2408:4009:500::2🇨🇳 Alibaba-Cloud2408:4009:500::/48 Alibaba Group | ||||||
| A | 8.212.93.2🇭🇰 Alibaba_Cloud_SEC8.212.93.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 140.205.1.2🇨🇳 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 | 170.33.32.209🇸🇬 Alibaba_Cloud_SEC170.33.32.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 170.33.73.25🇸🇬 Alibaba_Cloud_SEC170.33.73.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| A | 170.33.80.9🇸🇬 Alibaba_Cloud_SEC170.33.80.0/24 Alibaba.com Singapore E-Commerce Private Limited 8 Shenton Way, 45-01 AXA Tower, Singapore 068811 | ||||||
| SOA | vip1.alidns.comhostmaster@hichina.com 2026-01-07 #16 | ||||||
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.cnroot@cnnic.cn serial=2034704684 | ||||||
Subdomains
img1.51321.cn |
Same first word
Similar names
DNS History
3 records (3 active, 0 former)
●NSvip1.alidns.com2026-04-20 → 2026-04-23 · 2 obs
● 2026-04-23 23:57:16
●NSvip2.alidns.com2026-04-20 → 2026-04-23 · 2 obs
● 2026-04-23 23:57:16
●A111.231.100.682026-04-20 → 2026-04-23 · 2 obs
● 2026-04-23 23:57:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| 51321.cn | vip1.alidns.com, vip2.alidns.com | - |
✅ Authoritative Response
Server:140.205.1.1
NS records: vip1.alidns.com, vip2.alidns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 51321.cn (unsigned zone)
⏱️ Timing
Total: 951ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 111.231.100.68 |
| NS | 2 | vip2.alidns.com, vip1.alidns.com |
| SOA | 1 | vip1.alidns.com hostmaster.hichina.com |
Analysis
Hierarchy
The parent of img1.51321.cn is 51321.cn.
IP Addresses
51321.cn points to an IP address: 111.231.100.68.
Other host names, such as img1.51321.cn, e1861.cn and chicore.cn, share IP numbers with 51321.cn.
Name Servers
Two name servers vip1.alidns.com and vip2.alidns.com handle the delegation for 51321.cn.
51321.cn shares the same name server setup as other domains, for instance yanning.wang, daigua.com, natconn.com, neox-inc.com and tzjkst.com.
51321.cn at least partially shares name servers with other domains, for instance 0k24.com, staticsoe.com, p5.cn, muyisa.com and qianzhengdaiban.com.
These name servers are commonly used with vip3.alidns.com and vip4.alidns.com.
Six IP addresses per host:
vip1.alidns.com points to 2408:4009:500::1, 8.212.93.1, 140.205.1.1, 170.33.32.208, 170.33.73.24 and 170.33.80.8; vip2.alidns.com points to 2408:4009:500::2, 8.212.93.2, 140.205.1.2, 170.33.32.209, 170.33.73.25 and 170.33.80.9