classroomserver.de - robtex.com

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classroomserver.de

DNSSEC⚠️ Not signed
A148.251.138.43🇩🇪 Hetzner
PTRsrv1.kuhada.net
NSns1.first-ns.de ⭐
A2a01:4f8:0:a101::a:1🇩🇪 Hetzner
PTRns1.first-ns.de
A213.239.242.238🇩🇪 Hetzner
PTRns1.first-ns.de
NSrobotns2.second-ns.de
A2a01:4f8:0:1::5ddc:2🇩🇪 Hetzner
PTRrobotns2.second-ns.de
A213.133.100.103🇩🇪 Hetzner
PTRrobotns2.second-ns.de
NSrobotns3.second-ns.com
A2001:67c:192c::add:a3🇩🇪 NORIS-NETWORK
PTRrobotns3.second-ns.com
A193.47.99.3🇩🇪 NORIS-NETWORK
PTRrobotns3.second-ns.com
MXmail.classroomserver.de ⭐
A88.198.23.117🇩🇪 Hetzner
PTRmail.classing.de
SOAns1.first-ns.dedns@hetzner.com 2026-01-15 #0

de

DNSSEC🔒 Signed (DS record present)
NSf.nic.de ⭐ 🔒
NSa.nic.de 🔒
NSl.de.net⚠️ 🔒
NSn.de.net⚠️ 🔒
NSs.de.net⚠️ 🔒
NSz.nic.de 🔒
SOAf.nic.dedns-operations@denic.de serial=1770885130

Up

pt.classroomserver.de
mail.classroomserver.de

Same first word

classroomserver.de

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dea.nic.de, f.nic.de, z.nic.de-
classroomserver.derobotns3.second-ns.com, robotns2.second-ns.de, ns1.first-ns.de-

✅ Authoritative Response

Server: 213.239.242.238

NS records: robotns3.second-ns.com, robotns2.second-ns.de, ns1.first-ns.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for classroomserver.de (unsigned zone)

⏱️ Timing

Total: 1309ms | Queries: -

📄 Records

TypeCountSample Data
A1148.251.138.43
NS3ns1.first-ns.de, robotns2.second-ns.de...
MX1mail.classroomserver.de (pri: 10)
SOA1ns1.first-ns.de dns.hetzner.com

AI analysis

classroomserver.de is a parent of pt.classroomserver.de and mail.classroomserver.de.

classroomserver.de points to a single IP address: 148.251.138.43.

Other host names such as suzy.hr, matclass.de, udrugazag.hr, huns.hr and mountain-fit.com share IPs with classroomserver.de.

classroomserver.de is delegated to three name servers: robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de.

classroomserver.de at least partially shares name servers with other domains, for example dankredues.com, file42.de, elbdock.net, bintool.de and piraten-stuttgart.de.

Host names with two IP numbers:

robotns3.second-ns.com points to 2001:67c:192c::add:a3 and 193.47.99.3

ns1.first-ns.de points to 2a01:4f8:0:a101::a:1 and 213.239.242.238

robotns2.second-ns.de points to 2a01:4f8:0:1::5ddc:2 and 213.133.100.103

The mail.classroomserver.de mail server handles classroomserver.de.

mail.classroomserver.de points to a single IP number: 88.198.23.117.