cassnet.org - robtex.com
cassnet.org
| DNSSEC | ⚠️ Not signed | ||||||
| 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.cassnet.org ⭐ | ||||||
| TXT | v=spf1 mx -all | ||||||
| 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=1783162732 | ||||||
Same first word
Similar names
DNS History
5 records (4 active, 1 former)
●NSns1.first-ns.de2017-06-20 → 2026-07-04 · 2 obs
● 2026-07-04 11:22:40
●NSrobotns2.second-ns.de2017-06-20 → 2026-07-04 · 2 obs
● 2026-07-04 11:22:40
●NSrobotns3.second-ns.com2017-06-20 → 2026-07-04 · 2 obs
● 2026-07-04 11:22:40
●MXmail.cassnet.org2017-06-20 → 2026-07-04 · 2 obs
● 2026-07-04 11:22:40
○A88.99.170.1302017-06-20 → 2017-06-20 · 3 obs
○ 2026-07-01 09:42:24
○ 2026-07-04 11:22:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| cassnet.org | robotns2.second-ns.de, ns1.first-ns.de, robotns3.second-ns.com | - |
✅ Authoritative Response
Server:213.239.242.238
NS records: robotns2.second-ns.de, ns1.first-ns.de, robotns3.second-ns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cassnet.org (unsigned zone)
⏱️ Timing
Total: 1515ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | robotns3.second-ns.com, ns1.first-ns.de... |
| MX | 1 | mail.cassnet.org (pri: 10) |
| TXT | 1 | v=spf1 mx -all |
| SOA | 1 | ns1.first-ns.de dns.hetzner.com |
Analysis
Name Servers
Three name servers are authoritative for cassnet.org: robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de.
At least some of cassnet.org's name servers are shared with other domains, for example linux-portal.net, schwimmbadshopping.de, netz3000.de and two more.
It is common for these name servers to be used in conjunction with the name servers hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com and helium.ns.hetzner.de.
robotns3.second-ns.com resolves to 193.47.99.3 and 2001:67c:192c::add:a3. ns1.first-ns.de resolves to 213.239.242.238 and 2a01:4f8:0:a101::a:1. robotns2.second-ns.de resolves to 213.133.100.103 and 2a01:4f8:0:1::5ddc:2. All three hostnames point to two IP numbers each.
Mail Servers
Mail for cassnet.org is handled by a single mail server, mail.cassnet.org.