dcloud.cn - dns.ninja
dcloud.cn
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns.sdb.ac.cn ⭐ | ||||||
| A | 2001:cc0:2008:12::12🇨🇳 CSTNET-AS-AP2001:cc0::/32 CHINA SCIENCE AND TECHNOLOGY NETWORK | ||||||
| A | 159.226.12.1🇨🇳 CSTNET-AS-AP159.226.0.0/16 CSTNET's IP | ||||||
| NS | ns3.cstnet.cn | ||||||
| A | 159.226.18.13🇨🇳 CSTNET-AS-AP159.226.0.0/16 CSTNET's IP | ||||||
| NS | ns4.cstnet.cn | ||||||
| A | 159.226.18.14🇨🇳 CSTNET-AS-AP159.226.0.0/16 CSTNET's IP | ||||||
| MX | mx.cstnet.cn ⭐ | ||||||
| A | 159.226.251.12🇨🇳 CSTNET-AS-AP159.226.0.0/16 CSTNET's IP | ||||||
| PTR | mx.cstnet.cn | ||||||
| SOA | ns.sdb.ac.cnroot@ns.sdb.ac.cn 2017-09-29 #3 | ||||||
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=2035155184 | ||||||
Subdomains
www.dcloud.cn |
Same first word
Similar names
DNS History
5 records (4 active, 1 former)
○NSns2.sdb.ac.cn2015-08-02 → 2019-04-12 · 4 obs
● 2019-04-12 02:44:56
○ 2026-02-23 07:14:38
○ 2026-08-08 08:21:58
●NSns3.cstnet.cn2026-02-23 → 2026-08-08 · 3 obs
● 2026-02-23 07:14:38
● 2026-08-08 08:21:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| dcloud.cn | ns3.cstnet.cn, ns4.cstnet.cn | 2 records |
✅ Authoritative Response
Server:159.226.18.14
NS records: ns3.cstnet.cn, ns4.cstnet.cn
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dcloud.cn (unsigned zone)
⏱️ Timing
Total: 1456ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns3.cstnet.cn, ns4.cstnet.cn |
| MX | 1 | mx.cstnet.cn (pri: 5) |
| SOA | 1 | ns.sdb.ac.cn root.ns.sdb.ac.cn |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns3.cstnet.cn, ns4.cstnet.cn)
Analysis
Hierarchy
www.dcloud.cn is delegated beneath dcloud.cn.
Name Servers
dcloud.cn is delegated to three name servers: ns3.cstnet.cn, ns4.cstnet.cn and ns.sdb.ac.cn.
There is at least partial name server overlap between dcloud.cn and other domains — niccs.org.cn, chinaself.cn, escience.cn and two more among them.
These name servers are routinely co-deployed with the name servers ns1.xgslb.net, ns.kepu.com.cn, ns and two others.
Hosts with two IP numbers each:
ns.sdb.ac.cn points to 159.226.12.1 and 2001:cc0:2008:12::12.
Hosts that resolve to one IP address:
ns3.cstnet.cn points to 159.226.18.13.
ns4.cstnet.cn points to 159.226.18.14.
Mail Servers
dcloud.cn routes its mail through a single mail server, mx.cstnet.cn.
dcloud.cn has the same mail server arrangement as a number of other domains, for example shao.ac.cn, zkbl.net.cn, whlib.ac.cn and two more.
dcloud.cn and other domains — zknic.cn for instance — share at least some mail servers.
mx.cstnet.cn resolves to a single IP number: 159.226.251.12.