workcourse.de - dns.ninja

workcourse.de

DNSSEC⚠️ Not signed
A2a01:238:20a:202:1149::🇩🇪 STRATO2a01:238:20a::/48 Strato AG
PTRw95.rzone.de
A81.169.145.149🇩🇪 STRATO81.169.144.0/22 AG
NSshades08.rzone.de ⭐
A2607:f1c0:fe:53:185:132:34:135🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
PTRshades08.rzone.de
A185.132.34.135🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)
PTRshades08.rzone.de
NSdocks07.rzone.de
A2001:8d8:fe:53:5747:2a74:d:7🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
A217.160.80.134🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
MXsmtpin.rzone.de ⭐
A2a01:238:20a:202:50f0::1097🇩🇪 STRATO2a01:238:20a::/48 Strato AG
PTRsmtpin.rzone.de
A81.169.145.97🇩🇪 STRATO81.169.144.0/22 AG
PTRsmtpin.rzone.de
SOAshades08.rzone.dehostmaster@strato-rz.de 2020-06-22 #81

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=1785965240

Same first word

workcourse.de
workcourse.com

Similar names

coursework.co.uk
coursework.net
sucoworker.cz
worksource.net
coursework.com
coursework.app
worksource.co
worksource.io
cuoreworks.com
worksource.com
coursework.co
coeurworks.xyz
sourcework.com
coursework.de
sourcework.nl
worksource.de
coursework.info

DNS History

12 records (5 active, 7 former)

20162017201820192020202120222023202420252026NSdocks07.rzone.deshades08.rzone.dedns01-tld.t-online.dedns02-tld.t-online.deMXsmtpin.rzone.desmtp-01.tld.t-online.desmtp-02.tld.t-online.deA2a01:238:20a:202:1149::81.169.145.1492003:2:2:15:80:150:6:143222.76.126.5080.150.6.143
○NSdns01-tld.t-online.de2015-06-27 → 2017-02-11 · 4 obs
● 2015-06-27 11:17:54
● 2017-02-11 19:02:56
○ 2018-10-06 15:53:02
○ 2026-08-05 21:36:32
○NSdns02-tld.t-online.de2015-06-27 → 2017-02-11 · 4 obs
● 2015-06-27 11:17:54
● 2017-02-11 19:02:56
○ 2018-10-06 15:53:02
○ 2026-08-05 21:36:32
●NSdocks07.rzone.de2018-10-06 → 2026-08-05 · 3 obs
○ 2017-02-11 19:02:56
● 2018-10-06 15:53:02
● 2026-08-05 21:36:32
●NSshades08.rzone.de2018-10-06 → 2026-08-05 · 3 obs
○ 2017-02-11 19:02:56
● 2018-10-06 15:53:02
● 2026-08-05 21:36:32
○MXsmtp-01.tld.t-online.de2015-06-27 → 2017-02-11 · 4 obs
● 2015-06-27 11:17:54
● 2017-02-11 19:02:56
○ 2018-10-06 15:53:02
○ 2026-08-05 21:36:32
○MXsmtp-02.tld.t-online.de2015-06-27 → 2017-02-11 · 4 obs
● 2015-06-27 11:17:54
● 2017-02-11 19:02:56
○ 2018-10-06 15:53:02
○ 2026-08-05 21:36:32
●MXsmtpin.rzone.de2018-10-06 → 2026-08-05 · 3 obs
○ 2017-02-11 19:02:56
● 2018-10-06 15:53:02
● 2026-08-05 21:36:32
○A2003:2:2:15:80:150:6:1432015-06-27 → 2017-02-11 · 4 obs
● 2015-06-27 11:17:54
● 2017-02-11 19:02:56
○ 2018-10-06 15:53:02
○ 2026-08-05 21:36:32
○A222.76.126.502015-06-27 → 2015-06-27 · 3 obs
● 2015-06-27 11:17:54
○ 2017-02-11 19:02:56
○ 2026-08-05 21:36:32
●A2a01:238:20a:202:1149::2018-10-06 → 2026-08-05 · 3 obs
○ 2017-02-11 19:02:56
● 2018-10-06 15:53:02
● 2026-08-05 21:36:32
○A80.150.6.1432015-06-27 → 2017-02-11 · 4 obs
● 2015-06-27 11:17:54
● 2017-02-11 19:02:56
○ 2018-10-06 15:53:02
○ 2026-08-05 21:36:32
●A81.169.145.1492018-10-06 → 2026-08-05 · 3 obs
○ 2017-02-11 19:02:56
● 2018-10-06 15:53:02
● 2026-08-05 21:36:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dea.nic.de, f.nic.de, z.nic.de-
workcourse.deshades08.rzone.de, docks07.rzone.de-

✅ Authoritative Response

Server:217.160.80.134

NS records: shades08.rzone.de, docks07.rzone.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for workcourse.de (unsigned zone)

⏱️ Timing

Total: 4430ms | Queries: -

📄 Records

TypeCountSample Data
A181.169.145.149
AAAA12a01:238:20a:202:1149::
NS2shades08.rzone.de, docks07.rzone.de
MX1smtpin.rzone.de (pri: 5)
SOA1shades08.rzone.de hostmaster.strato-rz.d

Analysis

IP Addresses

workcourse.de directs to two IP numbers, 81.169.145.149 and 2a01:238:20a:202:1149::

ka-tex.de, ra-goertz.de, hochzeit-musikband.com plus two other host names have IP numbers in common with workcourse.de.

Name Servers

workcourse.de has two authoritative name servers — docks07.rzone.de and shades08.rzone.de.

The name server configuration of workcourse.de is shared with other domains, for instance cinegramm.de, teinzer.de, tunehotels.de and two others.

workcourse.de partially shares its NS delegation with several other domains, including marketmaster.de, icbd.nl, xlgr.com and two others.

In DNS configurations, these name servers often share authority with shades10.rzone.de, docks18.rzone.de, shades12.rzone.de and 7 other name servers.

Both docks07.rzone.de and shades08.rzone.de have two IP addresses each. docks07.rzone.de resolves to 217.160.80.134 and 2001:8d8:fe:53:5747:2a74:d:7; shades08.rzone.de resolves to 185.132.34.135 and 2607:f1c0:fe:53:185:132:34:135.

Mail Servers

workcourse.de uses one mail server — smtpin.rzone.de.

The mail server setup of workcourse.de matches that of other domains such as blackhawknetwork.at, pixcon.de, jeans-doktor.com and two others.

The host smtpin.rzone.de resolves to 81.169.145.97 and 2a01:238:20a:202:50f0::1097 — two IP addresses.