studyup.de - dns.ninja
studyup.de
| DNSSEC | ⚠️ Not signed | ||||||
| A | 194.245.148.217🇩🇪 CSL194.245.0.0/16 DE-CSL-GMBH-PA | ||||||
| PTR | urlfw-v2.joker.com | ||||||
| NS | x.ns.joker.com ⭐ | ||||||
| A | 194.245.103.13🇩🇪 CSL194.245.0.0/16 DE-CSL-GMBH-PA | ||||||
| PTR | x.ns.joker.com | ||||||
| NS | y.ns.joker.com | ||||||
| A | 2a01:4f8:c0c:165b::1🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK | ||||||
| PTR | y.ns.joker.com | ||||||
| A | 23.88.49.189🇩🇪 Hetzner23.88.0.0/17 HETZNER-DC | ||||||
| PTR | static.189.49.88.23.clients.your-server.de | ||||||
| NS | z.ns.joker.com | ||||||
| A | 2607:5300:203:7e6d::2222🇨🇦 OVH2607:5300::/32 Hosting route | ||||||
| PTR | z.ns.joker.com | ||||||
| A | 192.95.37.184🇨🇦 OVH192.95.0.0/18 Hosting route | ||||||
| PTR | z.ns.joker.com | ||||||
| MX | mail.joker.com ⭐ | ||||||
| A | 194.245.148.6🇩🇪 CSL194.245.0.0/16 DE-CSL-GMBH-PA | ||||||
| PTR | mailfw3.joker-forward.com | ||||||
| A | 194.245.148.9🇩🇪 CSL194.245.0.0/16 DE-CSL-GMBH-PA | ||||||
| PTR | mailfw4.joker-forward.com | ||||||
| SOA | x.ns.joker.comhostmaster@joker.com 2025-06-30 #53 | ||||||
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=1785421124 | ||||||
Subdomains
www.studyup.de |
Same first word
Similar names
DNS History
8 records (5 active, 3 former)
○NSdns-1.serv.uni-osnabrueck.de2015-08-15 → 2017-06-29 · 4 obs
● 2017-06-29 20:51:50
○ 2026-04-09 17:20:08
○ 2026-07-30 14:25:46
○NSdns-2.serv.uni-osnabrueck.de2015-08-15 → 2017-06-29 · 4 obs
● 2017-06-29 20:51:50
○ 2026-04-09 17:20:08
○ 2026-07-30 14:25:46
○NSdns-3.serv.uni-osnabrueck.de2015-08-15 → 2017-06-29 · 4 obs
● 2017-06-29 20:51:50
○ 2026-04-09 17:20:08
○ 2026-07-30 14:25:46
●NSx.ns.joker.com2026-04-09 → 2026-07-30 · 3 obs
● 2026-04-09 17:20:08
● 2026-07-30 14:25:46
●NSy.ns.joker.com2026-04-09 → 2026-07-30 · 3 obs
● 2026-04-09 17:20:08
● 2026-07-30 14:25:46
●NSz.ns.joker.com2026-04-09 → 2026-07-30 · 3 obs
● 2026-04-09 17:20:08
● 2026-07-30 14:25:46
●A194.245.148.2172026-04-09 → 2026-07-30 · 2 obs
● 2026-07-30 14:25:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| studyup.de | z.ns.joker.com, y.ns.joker.com, x.ns.joker.com | - |
✅ Authoritative Response
Server:192.95.37.184
NS records: z.ns.joker.com, y.ns.joker.com, x.ns.joker.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for studyup.de (unsigned zone)
⏱️ Timing
Total: 868ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 194.245.148.217 |
| NS | 3 | z.ns.joker.com, x.ns.joker.com... |
| MX | 1 | mail.joker.com (pri: 10) |
| SOA | 1 | x.ns.joker.com hostmaster.joker.com |
Analysis
Hierarchy
www.studyup.de is delegated beneath studyup.de.
IP Addresses
studyup.de resolves to just one IP address, 194.245.148.217.
Two other host names, along with deutsches-archiv-theaterpaedagogik.de, maako.com and hima-usa.com, also share IP numbers with studyup.de.
Name Servers
studyup.de carries NS records delegating to x.ns.joker.com, y.ns.joker.com and z.ns.joker.com.
There is at least partial name server overlap between studyup.de and other domains — cybereconomy.info, if-anweisung.de, euare.com and two more among them.
The name servers b.ns.joker.com, a.ns.joker.com and c.ns.joker.com are often found in combination with these name servers.
Host names that have two IP addresses:
y.ns.joker.com resolves to two addresses: 23.88.49.189 and 2a01:4f8:c0c:165b::1.
z.ns.joker.com resolves to two addresses: 192.95.37.184 and 2607:5300:203:7e6d::2222.
Host names that point to one IP address:
The hostname x.ns.joker.com resolves to 194.245.103.13.
Mail Servers
The sole mail server for studyup.de is mail.joker.com.
Among the domains sharing a mail server setup with studyup.de are taikahuilu.org, ixxa.com, heraldicsculptor.co.uk and two others.
mail.joker.com carries two IP numbers: 194.245.148.6 and 194.245.148.9.