21etu.com - robtex.com
21etu.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 101.201.50.61🇨🇳 Alibaba-Cloud101.201.0.0/16 CT BeiJing IDC | ||||||
| NS | ns1.cnolnic.com ⭐ | ||||||
| A | 240c:4081:8000:1702::4🇨🇳 Baidu240c:4081::/32 | ||||||
| A | 106.12.41.178🇨🇳 Baidu106.12.32.0/19 | ||||||
| A | 180.76.132.118🇨🇳 Baidu180.76.128.0/19 | ||||||
| NS | ns2.cnolnic.com | ||||||
| A | 240c:4082:0:5d80::3🇨🇳 Baidu240c:4082::/32 | ||||||
| A | 106.12.205.190🇨🇳 Baidu106.12.192.0/20 AS38365 | ||||||
| A | 182.61.7.241🇨🇳 Baidu182.61.0.0/19 | ||||||
| SOA | ns1.cnolnic.comroot@cnolnic.com 2006-11-24 #1 | ||||||
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.netnstld@verisign-grs.com serial=1778627796 | ||||||
Subdomains
www.21etu.com |
Same first word
21etu.com |
DNS History
6 records (3 active, 3 former)
●NSns1.cnolnic.com2015-08-20 → 2026-05-12 · 2 obs
● 2026-05-12 23:22:22
●NSns2.cnolnic.com2015-08-20 → 2026-05-12 · 2 obs
● 2026-05-12 23:22:22
○MXmxbiz1.qq.com2015-08-20 → 2016-11-26 · 4 obs
● 2016-11-26 06:53:14
○ 2026-04-14 16:31:54
○ 2026-05-12 23:22:22
○MXmxbiz2.qq.com2015-08-20 → 2016-11-26 · 4 obs
● 2016-11-26 06:53:14
○ 2026-04-14 16:31:54
○ 2026-05-12 23:22:22
●A101.201.50.612026-04-14 → 2026-05-12 · 3 obs
● 2026-04-14 16:31:54
● 2026-05-12 23:22:22
○A61.191.56.2302015-08-20 → 2016-11-26 · 4 obs
● 2016-11-26 06:53:14
○ 2026-04-14 16:31:54
○ 2026-05-12 23:22:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | j.gtld-servers.net, b.gtld-servers.net, l.gtld-servers.net, i.gtld-servers.net... | - |
| 21etu.com | ns1.cnolnic.com, ns2.cnolnic.com | 6 records |
✅ Authoritative Response
Server:106.12.41.178
NS records: ns1.cnolnic.com, ns2.cnolnic.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 21etu.com (unsigned zone)
⏱️ Timing
Total: 744ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 101.201.50.61 |
| NS | 2 | ns2.cnolnic.com, ns1.cnolnic.com |
| SOA | 1 | ns1.cnolnic.com root.cnolnic.com |
📌 Glue Records Collected
Total: 6
Out-of-bailiwick: 6 (ns1.cnolnic.com, ns1.cnolnic.com, ns1.cnolnic.com...)
Analysis
Hierarchy
21etu.com is the parent of www.21etu.com.
IP Addresses
21etu.com points to IP number 101.201.50.61.
Other host names, for instance, www.21etu.com share IP numbers with 21etu.com.
Name Servers
21etu.com is delegated to two name servers: ns1.cnolnic.com and ns2.cnolnic.com.
21etu.com uses the same name server setup as other domains such as zhxy1z.com, alizsw.com, jiybaby.com, xinda-opto.com and fsnre.com.
21etu.com shares name servers with other domains at least partially, for example sllxj.cn.
Host names with three IP numbers:
ns1.cnolnic.com points to: 240c:4081:8000:1702::4, 106.12.41.178 and 180.76.132.118.
ns2.cnolnic.com points to: 240c:4082:0:5d80::3, 106.12.205.190 and 182.61.7.241.