cdn.entstudy.com - dns.ninja
cdn.entstudy.com
| CNAME | xm.cname.histudy.com | ||||||
| CNAME | alb-deliax28ua2saswkuz.cn-hangzhou.alb.aliyuncsslb.com | ||||||
| DNSSEC | ⚠️ Not signed | ||||||
| A | 121.41.33.177🇨🇳 Alibaba-Cloud121.40.0.0/15 | ||||||
| A | 121.41.236.20🇨🇳 Alibaba-Cloud121.40.0.0/15 | ||||||
entstudy.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 123.56.251.139🇨🇳 Alibaba-Cloud123.56.0.0/16 Alibaba (US) Technology Co., Ltd. | ||||||
| NS | vip3.alidns.com ⭐ | ||||||
| NS | vip4.alidns.com | ||||||
| MX | mxbiz1.qq.com ⭐ | ||||||
| MX | mxbiz2.qq.com(10) | ||||||
| TXT | v=spf1 include:spf.mail.qq.com ~all | ||||||
| SOA | vip3.alidns.comhostmaster@hichina.com 2013-10-10 #13 | ||||||
Subdomains
a.cdn.entstudy.com |
Same first word
Similar names
DNS History
2 records (1 active, 1 former)
○A47.97.105.2552026-02-21 → 2026-02-21 · 3 obs
● 2026-02-21 18:52:32
○ 2026-03-26 02:26:44
○ 2026-07-31 03:57:40
○ 2026-03-26 02:26:44
○ 2026-07-31 03:57:40
●CNAMExm.cname.histudy.com2026-03-26 → 2026-07-31 · 2 obs
● 2026-03-26 02:26:44
● 2026-07-31 03:57:40
● 2026-07-31 03:57:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| entstudy.com | vip3.alidns.com, vip4.alidns.com | 22 records |
✅ Authoritative Response
Server:121.40.6.164
NS records: vip3.alidns.com, vip4.alidns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for entstudy.com (unsigned zone)
⏱️ Timing
Total: 3235ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| CNAME | 1 | xm.cname.histudy.com |
📌 Glue Records Collected
Total: 22
Out-of-bailiwick: 22 (vip3.alidns.com, vip3.alidns.com, vip3.alidns.com...)
Analysis
Hierarchy
cdn.entstudy.com is the parent zone for a.cdn.entstudy.com.
IP Addresses
cdn.entstudy.com directs to two IP numbers, 121.41.33.177 and 121.41.236.20
Other host names, such as alb-deliax28ua2saswkuz.cn-hangzhou.alb.aliyuncsslb.com, share IP numbers with cdn.entstudy.com.