4cup.de - robtex.com

4cup.de

DNSSEC⚠️ Not signed
A2a01:238:20a:202:1079::🇩🇪 STRATO2a01:238:20a::/48 Strato AG
PTRw0f.rzone.de
A81.169.145.79🇩🇪 STRATO81.169.144.0/22 AG
NSdocks20.rzone.de ⭐
A2001:8d8:fe:53:5747:2a74:d:20🇩🇪 IONOS-AS2001:8d8:fe::/47 IONOS AS8560 anycast more specific
PTRdocks20.rzone.de
A217.160.80.147🇩🇪 IONOS-AS217.160.80.0/22 AS8560 anycast more specific
PTRdocks20.rzone.de
NSshades11.rzone.de
A2607:f1c0:fe:53:185:132:34:138🇺🇸 IONOS-ANYCAST2607:f1c0:fe::/47 AS8560 global anycast services (more specific) 1&1 IONOS Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US
PTRshades11.rzone.de
A185.132.34.138🇩🇪 IONOS-ANYCAST185.132.32.0/22 IONOS DNSAS (eBGP DNS)
PTRshades11.rzone.de
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
SOAdocks20.rzone.dehostmaster@strato-rz.de 2020-06-26 #28

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=1785084523

Same first word

4cup.com
4cup.de

Similar names

cp4u.nl
pc4u.org
cpu4.com
pc4u.com
cp4u.be
4ucp.com
pc4u.co.jp
pc4u.de
pc4u.ch
4upc.ru
pc4u.ru
pc4u.fr
pc4u.gr
4upc.de
pc4u.sk
pc4u.es
4upc.net
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pc4u.kz
pc4u.in

DNS History

5 records (5 active, 0 former)

NSdocks20.rzone.deshades11.rzone.deMXsmtpin.rzone.deA2a01:238:20a:202:1079::81.169.145.79
●NSdocks20.rzone.de2026-02-25 → 2026-07-26 · 2 obs
● 2026-02-25 10:28:50
● 2026-07-26 17:27:20
●NSshades11.rzone.de2026-02-25 → 2026-07-26 · 2 obs
● 2026-02-25 10:28:50
● 2026-07-26 17:27:20
●MXsmtpin.rzone.de2026-02-25 → 2026-07-26 · 2 obs
● 2026-02-25 10:28:50
● 2026-07-26 17:27:20
●A2a01:238:20a:202:1079::2026-02-25 → 2026-07-26 · 2 obs
● 2026-02-25 10:28:50
● 2026-07-26 17:27:20
●A81.169.145.792026-02-25 → 2026-07-26 · 2 obs
● 2026-02-25 10:28:50
● 2026-07-26 17:27:20

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dez.nic.de, a.nic.de, f.nic.de-
4cup.dedocks20.rzone.de, shades11.rzone.de-

✅ Authoritative Response

Server:185.132.34.138

NS records: docks20.rzone.de, shades11.rzone.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 4cup.de (unsigned zone)

⏱️ Timing

Total: 943ms | Queries: -

📄 Records

TypeCountSample Data
A181.169.145.79
AAAA12a01:238:20a:202:1079::
NS2docks20.rzone.de, shades11.rzone.de
MX1smtpin.rzone.de (pri: 5)
SOA1docks20.rzone.de hostmaster.strato-rz.de

Analysis

IP Addresses

4cup.de points to the IP addresses 81.169.145.79 and 2a01:238:20a:202:1079::

Among the host names that share IP numbers with 4cup.de are stiftung-bockenem.de, busys.de, jpbox-office.com and two others.

Name Servers

The NS records for 4cup.de delegate to docks20.rzone.de and shades11.rzone.de.

4cup.de has the same name server delegation as a number of other domains, such as best-gmbh.net, malstation.de, planteg.com and two more.

At least some of 4cup.de's name servers are shared with other domains, for example sanza.biz, guenter-danisch.de, marc-kemper.com and two more.

These name servers tend to co-occur with shades13.rzone.de, shades07.rzone.de, shades05.rzone.de and 7 other name servers in the same DNS delegations.

docks20.rzone.de resolves to 217.160.80.147 and 2001:8d8:fe:53:5747:2a74:d:20. Likewise, shades11.rzone.de resolves to 185.132.34.138 and 2607:f1c0:fe:53:185:132:34:138 — two IP addresses apiece.

Mail Servers

4cup.de routes its mail through a single mail server, smtpin.rzone.de.

4cup.de has the same mail server arrangement as a number of other domains, for example htb.de, mail.schmidt-sabine.info, immobilien-rohde.de and two more.

smtpin.rzone.de directs to two IP numbers, 81.169.145.97 and 2a01:238:20a:202:50f0::1097.