cdn21.de - robtex.com
cdn21.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 91.132.146.246🇩🇪 netcup-AS91.132.144.0/22 | ||||||
| PTR | v2202601327760425345.ultrasrv.de | ||||||
| NS | hydrogen.ns.hetzner.com ⭐ | ||||||
| A | 2a01:4f8:0:1::add:1098🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | hydrogen.ns.hetzner.com | ||||||
| A | 213.133.100.98🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1 | ||||||
| PTR | hydrogen.ns.hetzner.com | ||||||
| NS | helium.ns.hetzner.de | ||||||
| A | 2001:67c:192c::add:5🇩🇪 NORIS-NETWORK2001:67c:192c::/48 | ||||||
| PTR | helium.ns.hetzner.de | ||||||
| A | 193.47.99.5🇩🇪 NORIS-NETWORK193.47.99.0/24 | ||||||
| PTR | helium.ns.hetzner.de | ||||||
| NS | oxygen.ns.hetzner.com | ||||||
| A | 2a01:4f8:0:1::add:2992🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | oxygen.ns.hetzner.com | ||||||
| A | 88.198.229.192🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4 | ||||||
| PTR | oxygen.ns.hetzner.com | ||||||
| SOA | hydrogen.ns.hetzner.comdns@hetzner.com 2025-12-31 #1 | ||||||
de
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | f.nic.de ⭐ | ||||||
| NS | a.nic.de | ||||||
| NS | l.de.net ⚠️ Not in parent delegation | ||||||
| NS | n.de.net ⚠️ Not in parent delegation | ||||||
| NS | s.de.net ⚠️ Not in parent delegation | ||||||
| NS | z.nic.de | ||||||
| SOA | f.nic.dedns-operations@denic.de serial=1771291602 | ||||||
Same first word
Similar names
12cdn.net |
21cdn.com |
cdn12.live |
12cdn.xyz |
21cnd.cn |
cnd21.com |
c21dn.com |
ndc21.com |
c21nd.com |
dnc21.com |
21cdn.net |
12cdn.com |
cdn12.to |
DNS History
4 records (4 active, 0 former)
●NShelium.ns.hetzner.de2026-03-01 → 2026-03-01 · 2 obs
● 2026-03-01 08:17:12
●NShydrogen.ns.hetzner.com2026-03-01 → 2026-03-01 · 2 obs
● 2026-03-01 08:17:12
●NSoxygen.ns.hetzner.com2026-03-01 → 2026-03-01 · 2 obs
● 2026-03-01 08:17:12
●A91.132.146.2462026-03-01 → 2026-03-01 · 2 obs
● 2026-03-01 08:17:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| cdn21.de | helium.ns.hetzner.de, oxygen.ns.hetzner.com, hydrogen.ns.hetzner.com | - |
✅ Authoritative Response
Server: 193.47.99.5
NS records: helium.ns.hetzner.de, oxygen.ns.hetzner.com, hydrogen.ns.hetzner.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cdn21.de (unsigned zone)
⏱️ Timing
Total: 3125ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 91.132.146.246 |
| NS | 3 | oxygen.ns.hetzner.com, helium.ns.hetzner.de... |
| SOA | 1 | hydrogen.ns.hetzner.com dns.hetzner.com |
Analysis
IP Addresses
cdn21.de resolves to one IP number: 91.132.146.246.
Name Servers
cdn21.de is delegated to three name servers hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com and helium.ns.hetzner.de.
cdn21.de at least partially shares name servers with other domains, for instance xtux.org, dom-led.com, adil-triqui.de, charterflug.de and koenig.at.
These name servers are commonly used with ns1.first-ns.de, robotns2.second-ns.de and robotns3.second-ns.com.
Host names with two IP numbers:
hydrogen.ns.hetzner.com points to: 2a01:4f8:0:1::add:1098 and 213.133.100.98.
oxygen.ns.hetzner.com points to: 2a01:4f8:0:1::add:2992 and 88.198.229.192.
helium.ns.hetzner.de points to: 2001:67c:192c::add:5 and 193.47.99.5.