classing.de - dns.ninja
classing.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 162.55.80.249🇩🇪 Hetzner162.55.0.0/16 HETZNER-DC | ||||||
| PTR | classing.de | ||||||
| NS | ns1.first-ns.de.classing.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.classing.de ⭐ | ||||||
| A | 88.198.23.117🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4 | ||||||
| PTR | mail.classing.de | ||||||
| TXT | v=spf1 a mx -all | ||||||
| TXT | atlassian-domain-verification=9v6qHyfdh66ohx1PChVfopadYkY3LDy3aJifoDKaCNyyq9d... | ||||||
| SOA | ns1.first-ns.de.classing.depostmaster@robot.first-ns.de.classing.de 2026-07-08 #0 | ||||||
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=1785434047 | ||||||
PTR for
Subdomains
Same first word
Similar names
DNS History
7 records (6 active, 1 former)
●NSns1.first-ns.de2015-06-01 → 2026-07-30 · 2 obs
● 2026-07-30 18:08:58
●NSns1.first-ns.de.classing.de2020-03-11 → 2026-07-30 · 3 obs
● 2020-03-11 18:54:18
● 2026-07-30 18:08:58
●NSrobotns2.second-ns.de2015-06-01 → 2026-07-30 · 2 obs
● 2026-07-30 18:08:58
●NSrobotns3.second-ns.com2015-06-01 → 2026-07-30 · 2 obs
● 2026-07-30 18:08:58
●MXmail.classing.de2015-06-01 → 2026-07-30 · 2 obs
● 2026-07-30 18:08:58
○A148.251.138.432015-06-01 → 2020-03-11 · 4 obs
● 2020-03-11 18:54:18
○ 2026-03-11 02:14:46
○ 2026-07-30 18:08:58
●A162.55.80.2492026-03-11 → 2026-07-30 · 3 obs
● 2026-03-11 02:14:46
● 2026-07-30 18:08:58
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, z.nic.de, f.nic.de | - |
| classing.de | robotns3.second-ns.com, robotns2.second-ns.de, ns1.first-ns.de | - |
✅ Authoritative Response
Server:193.47.99.3
NS records: robotns3.second-ns.com, robotns2.second-ns.de, ns1.first-ns.de
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for classing.de (unsigned zone)
⏱️ Timing
Total: 747ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 162.55.80.249 |
| NS | 3 | robotns3.second-ns.com, ns1.first-ns.de... |
| MX | 1 | mail.classing.de (pri: 10) |
| TXT | 2 | atlassian-domain-verification=9v6qHyfdh6, v=spf1 a mx -all |
| SOA | 1 | ns1.first-ns.de.classing.de postmaster.r |
Analysis
Hierarchy
The parent domain of gl.classing.de and mail.classing.de is classing.de.
IP Addresses
classing.de directs to one IP number, which is 162.55.80.249.
Other host names, such as classing.eu, share IP numbers with classing.de.
Name Servers
The domain classing.de is delegated to these four name servers: robotns3.second-ns.com, ns1.first-ns.de, robotns2.second-ns.de and ns1.first-ns.de.classing.de.
There is at least partial name server overlap between classing.de and other domains — ths4u.de, sysret.de, bluadwiesn.de and two more among them.
These name servers are routinely deployed together with the name servers ns1.baka-sama.de.
robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de each resolve to two IP addresses: 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.
Mail Servers
classing.de routes its mail through a single mail server, mail.classing.de.
mail.classing.de resolves to a single IP number: 88.198.23.117.