coursemanager.de - dns.ninja

coursemanager.de

DNSSEC⚠️ Not signed
A159.89.214.161🇩🇪 DIGITALOCEAN159.89.212.0/22 DigitalOcean

de

DNSSEC🔒 Signed (DS record present)
NSf.nic.de ⭐
NSa.nic.de
NSl.de.net ⚠️ Not in parent delegation
NSn.de.net ⚠️ Not in parent delegation
NSs.de.net ⚠️ Not in parent delegation
NSz.nic.de
SOAf.nic.dedns-operations@denic.de serial=1783141273

Same first word

coursemanager.de
coursemanager.net
coursemanager.io

Similar names

cougarsnearme.com
sourcemanager.com
sourcemanager.dev
sourcemanager.ru
managercourse.com

DNS History

12 records (1 active, 11 former)

20162017201820192020202120222023202420252026NSa.ns14.netb.ns14.netc.ns14.netd.ns14.netns.stratoserver.netns2.stratoserver.netns3.stratoserver.netns4.stratoserver.netMXmx.54131320.de.strato-hosting.euA159.89.214.16162.116.130.881.169.215.60
○NSa.ns14.net2026-04-05 → 2026-05-24 · 4 obs
○ 2017-02-19 04:30:54
● 2026-04-05 00:28:32
● 2026-05-24 17:24:00
○ 2026-07-04 05:03:18
○NSb.ns14.net2026-04-05 → 2026-05-24 · 4 obs
○ 2017-02-19 04:30:54
● 2026-04-05 00:28:32
● 2026-05-24 17:24:00
○ 2026-07-04 05:03:18
○NSc.ns14.net2026-04-05 → 2026-05-24 · 4 obs
○ 2017-02-19 04:30:54
● 2026-04-05 00:28:32
● 2026-05-24 17:24:00
○ 2026-07-04 05:03:18
○NSd.ns14.net2026-04-05 → 2026-05-24 · 4 obs
○ 2017-02-19 04:30:54
● 2026-04-05 00:28:32
● 2026-05-24 17:24:00
○ 2026-07-04 05:03:18
○NSns.stratoserver.net2015-07-08 → 2016-06-26 · 4 obs
● 2015-07-08 16:00:48
● 2016-06-26 19:06:06
○ 2017-02-19 04:30:54
○ 2026-07-04 05:03:18
○NSns2.stratoserver.net2015-07-08 → 2016-06-26 · 4 obs
● 2015-07-08 16:00:48
● 2016-06-26 19:06:06
○ 2017-02-19 04:30:54
○ 2026-07-04 05:03:18
○NSns3.stratoserver.net2017-02-19 → 2017-02-19 · 4 obs
○ 2016-06-26 19:06:06
● 2017-02-19 04:30:54
○ 2026-04-05 00:28:32
○ 2026-07-04 05:03:18
○NSns4.stratoserver.net2017-02-19 → 2017-02-19 · 4 obs
○ 2016-06-26 19:06:06
● 2017-02-19 04:30:54
○ 2026-04-05 00:28:32
○ 2026-07-04 05:03:18
○MXmx.54131320.de.strato-hosting.eu2015-07-08 → 2017-02-19 · 4 obs
● 2015-07-08 16:00:48
● 2017-02-19 04:30:54
○ 2026-04-05 00:28:32
○ 2026-07-04 05:03:18
●A159.89.214.1612026-07-04 → 2026-07-04 · 2 obs
○ 2026-05-24 17:24:00
● 2026-07-04 05:03:18
○A62.116.130.82026-04-05 → 2026-05-24 · 4 obs
○ 2017-02-19 04:30:54
● 2026-04-05 00:28:32
● 2026-05-24 17:24:00
○ 2026-07-04 05:03:18
○A81.169.215.602015-07-08 → 2017-02-19 · 4 obs
● 2015-07-08 16:00:48
● 2017-02-19 04:30:54
○ 2026-04-05 00:28:32
○ 2026-07-04 05:03:18

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dea.nic.de, f.nic.de, z.nic.de-

✅ Authoritative Response

Server:81.91.164.5

NS records: a.nic.de, f.nic.de, z.nic.de

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 510ms | Queries: -

📄 Records

TypeCountSample Data
A1159.89.214.161

Analysis

IP Addresses

coursemanager.de points to a single IP number: 159.89.214.161.

Additional host names — zukunftspolitik.de, smart-grid.at, stirnemann.de and two others — share IP numbers with coursemanager.de.