cuon.org - dns.ninja
cuon.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 167.235.78.96🇩🇪 Hetzner167.235.0.0/16 HETZNER-DC | ||||||
| PTR | static.96.78.235.167.clients.your-server.de | ||||||
| NS | ns1.first-ns.de ⭐ | ||||||
| A | 2a01:4f8:0:a101::a:1🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | ns1.first-ns.de | ||||||
| A | 213.239.242.238🇩🇪 Hetzner213.239.192.0/18 HETZNER-RZ-NBG-BLK2 | ||||||
| PTR | ns1.first-ns.de | ||||||
| NS | robotns2.second-ns.de | ||||||
| A | 2a01:4f8:0:1::5ddc:2🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | robotns2.second-ns.de | ||||||
| A | 213.133.100.103🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1 | ||||||
| PTR | robotns2.second-ns.de | ||||||
| NS | robotns3.second-ns.com | ||||||
| A | 2001:67c:192c::add:a3🇩🇪 NORIS-NETWORK2001:67c:192c::/48 | ||||||
| PTR | robotns3.second-ns.com | ||||||
| A | 193.47.99.3🇩🇪 NORIS-NETWORK193.47.99.0/24 | ||||||
| PTR | robotns3.second-ns.com | ||||||
| MX | mail.cuon.org ⭐ | ||||||
| A | 167.235.78.96🇩🇪 Hetzner167.235.0.0/16 HETZNER-DC | ||||||
| PTR | static.96.78.235.167.clients.your-server.de | ||||||
| SOA | ns1.first-ns.dedns@hetzner.com 2026-04-14 #0 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1781501996 | ||||||
Subdomains
Same first word
Similar names
DNS History
6 records (5 active, 1 former)
●NSns1.first-ns.de2015-08-18 → 2026-06-15 · 2 obs
● 2026-06-15 05:57:44
●NSrobotns2.second-ns.de2015-08-18 → 2026-06-15 · 2 obs
● 2026-06-15 05:57:44
●NSrobotns3.second-ns.com2015-08-18 → 2026-06-15 · 2 obs
● 2026-06-15 05:57:44
●MXmail.cuon.org2015-08-18 → 2026-06-15 · 2 obs
● 2026-06-15 05:57:44
●A167.235.78.962026-03-15 → 2026-06-15 · 3 obs
● 2026-03-15 21:31:24
● 2026-06-15 05:57:44
○A188.40.48.1502015-08-18 → 2018-06-30 · 4 obs
● 2018-06-30 13:31:34
○ 2026-03-15 21:31:24
○ 2026-06-15 05:57:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| cuon.org | robotns2.second-ns.de, ns1.first-ns.de, robotns3.second-ns.com | - |
✅ Authoritative Response
Server:213.133.100.103
NS records: robotns2.second-ns.de, ns1.first-ns.de, robotns3.second-ns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cuon.org (unsigned zone)
⏱️ Timing
Total: 298ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 167.235.78.96 |
| NS | 3 | ns1.first-ns.de, robotns2.second-ns.de... |
| MX | 1 | mail.cuon.org (pri: 10) |
| SOA | 1 | ns1.first-ns.de dns.hetzner.com |
Analysis
Hierarchy
cuon.org serves as the parent of www.cuon.org and mail.cuon.org.
IP Addresses
cuon.org has exactly one IP address — 167.235.78.96.
pxsim.com, www.cuon.org, cyrus.de plus two other host names have IP numbers in common with cuon.org.
Name Servers
cuon.org carries NS records delegating to robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de.
cuon.org partially shares its NS delegation with several other domains, including mounty.de, golyr.de, naturatool.com and two others.
These name servers regularly co-occur with the name servers hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com and helium.ns.hetzner.de.
robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de are three hostnames that each resolve to a pair of IP addresses: robotns3.second-ns.com to 193.47.99.3 and 2001:67c:192c::add:a3, ns1.first-ns.de to 213.239.242.238 and 2a01:4f8:0:a101::a:1, and robotns2.second-ns.de to 213.133.100.103 and 2a01:4f8:0:1::5ddc:2.
Mail Servers
cuon.org uses one mail server — mail.cuon.org.
mail.cuon.org carries a single IP number, which is 167.235.78.96.