csus.de - dns.ninja

csus.de

DNSSEC⚠️ Not signed
A87.106.129.107🇩🇪 IONOS-AS87.106.129.0/24 IONOS SE ber.de
PTRcs-us.de
NSdns1.regsystem.net
A2a02:20a8:a000:4::2🇩🇪 Equinix2a02:20a8::/32 Frankfurt
PTRfrigg.dnsnodes.com
A217.79.214.245🇩🇪 Equinix217.79.208.0/20 Frankfurt
NSdns2.regsystem.net
A2a02:20a8:a000:4::53🇩🇪 Equinix2a02:20a8::/32 Frankfurt
PTRthor.dnsnodes.eu
A217.79.214.253🇩🇪 Equinix217.79.208.0/20 Frankfurt
NSdns3.regsystem.net
A2a02:4c00:0:8000::2🇩🇪 NCORE-AS2a02:4c00::/40 HKN GmbH Am Rheintor 7 D-47829 Krefeld Germany
PTRodin.dnsnodes.eu
A2a02:4c00:0:8000::5🇩🇪 NCORE-AS2a02:4c00::/40 HKN GmbH Am Rheintor 7 D-47829 Krefeld Germany
PTRodin.dnsnodes.eu
A213.9.14.107🇩🇪 NCORE-AS213.9.0.0/17 HKN GmbH Hochstadenstr. 5 D-47829 Krefeld Germany
A213.9.44.85🇩🇪 NCORE-AS213.9.0.0/17 HKN GmbH Hochstadenstr. 5 D-47829 Krefeld Germany
MXcsus.de
A87.106.129.107🇩🇪 IONOS-AS87.106.129.0/24 IONOS SE ber.de
PTRcs-us.de
MXmail.csus.de(20)
A87.106.129.107🇩🇪 IONOS-AS87.106.129.0/24 IONOS SE ber.de
PTRcs-us.de
MXsmtp.csus.de(30)
A87.106.129.107🇩🇪 IONOS-AS87.106.129.0/24 IONOS SE ber.de
PTRcs-us.de
MXimap.csus.de(40)
A87.106.129.107🇩🇪 IONOS-AS87.106.129.0/24 IONOS SE ber.de
PTRcs-us.de
TXTv=spf1 a:csus.de ip4:87.106.129.107 include:_spf.google.com ~all
SOAdns1.regsystem.nethostmaster@regsystem.net 2026-06-22 #1

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=1786648852

MX for

Subdomains

Same first word

Similar names

DNS History

11 records (8 active, 3 former)

20162017201820192020202120222023202420252026NSdns1.regsystem.netdns2.regsystem.netdns3.regsystem.netMXcsus.deimap.csus.demail.csus.desmtp.csus.deh1611193.stratoserver.netA87.106.129.107109.237.138.4985.214.41.65
NSdns1.regsystem.net2015-08-23 → 2026-08-13 · 2 obs
● 2015-08-23 02:11:48
● 2026-08-13 19:45:00
NSdns2.regsystem.net2015-08-23 → 2026-08-13 · 2 obs
● 2015-08-23 02:11:48
● 2026-08-13 19:45:00
NSdns3.regsystem.net2026-03-24 → 2026-08-13 · 3 obs
○ 2015-08-23 02:11:48
● 2026-03-24 07:47:40
● 2026-08-13 19:45:00
MXcsus.de2026-03-24 → 2026-08-13 · 3 obs
○ 2017-09-20 12:26:54
● 2026-03-24 07:47:40
● 2026-08-13 19:45:00
MXh1611193.stratoserver.net2015-08-23 → 2017-08-27 · 4 obs
● 2015-08-23 02:11:48
● 2017-08-27 06:31:20
○ 2017-09-20 12:26:54
○ 2026-08-13 19:45:00
MXimap.csus.de2026-03-24 → 2026-08-13 · 3 obs
○ 2017-09-20 12:26:54
● 2026-03-24 07:47:40
● 2026-08-13 19:45:00
MXmail.csus.de2015-08-23 → 2026-08-13 · 2 obs
● 2015-08-23 02:11:48
● 2026-08-13 19:45:00
MXsmtp.csus.de2026-03-24 → 2026-08-13 · 3 obs
○ 2017-09-20 12:26:54
● 2026-03-24 07:47:40
● 2026-08-13 19:45:00
A109.237.138.492017-09-20 → 2017-09-20 · 4 obs
○ 2017-08-27 06:31:20
● 2017-09-20 12:26:54
○ 2026-03-24 07:47:40
○ 2026-08-13 19:45:00
A85.214.41.652015-08-23 → 2017-08-27 · 4 obs
● 2015-08-23 02:11:48
● 2017-08-27 06:31:20
○ 2017-09-20 12:26:54
○ 2026-08-13 19:45:00
A87.106.129.1072026-03-24 → 2026-08-13 · 3 obs
○ 2017-09-20 12:26:54
● 2026-03-24 07:47:40
● 2026-08-13 19:45:00

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
dea.nic.de, f.nic.de, z.nic.de-
csus.dedns1.regsystem.net, dns2.regsystem.net, dns3.regsystem.net-

✅ Authoritative Response

Server:213.9.44.85

NS records: dns1.regsystem.net, dns2.regsystem.net, dns3.regsystem.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for csus.de (unsigned zone)

⏱️ Timing

Total: 1186ms | Queries: -

📄 Records

TypeCountSample Data
A187.106.129.107
NS3dns1.regsystem.net, dns2.regsystem.net...
MX4csus.de (pri: 10), mail.csus.de (pri: 20)...
TXT1v=spf1 a:csus.de ip4:87.106.129.107 incl
SOA1dns1.regsystem.net hostmaster.regsystem.

Analysis

Hierarchy

The domain csus.de is a parent of www.csus.de, imap.csus.de, mail.csus.de and smtp.csus.de.

Mail Server Role

The MX record for csus.de points back to csus.de — it is its own mail server.

imap.csus.de, mail.csus.de and smtp.csus.de are often deployed as mail servers in conjunction with csus.de.

IP Addresses

csus.de directs to one IP number, which is 87.106.129.107.

Among the host names that share IP numbers with csus.de are marens-haarstudio.de, analytics.cs-us.com, mail.csus.de and two others.

Name Servers

csus.de is served by three name servers: dns1.regsystem.net, dns2.regsystem.net and dns3.regsystem.net.

At least some of csus.de's name servers are shared with other domains, for example rema-tec.net, spirit-vibrations.de, dbd-sz.de and two more.

Hosts pointing to four IP addresses:

dns3.regsystem.net directs to 213.9.14.107, 213.9.44.85, 2a02:4c00:0:8000::2 and 2a02:4c00:0:8000::5.

Hosts with two IP numbers each:

The A records for dns1.regsystem.net return 217.79.214.245 and 2a02:20a8:a000:4::2.

The A records for dns2.regsystem.net return 217.79.214.253 and 2a02:20a8:a000:4::53.

Mail Servers

csus.de is managed by four mail servers: csus.de, imap.csus.de, mail.csus.de and smtp.csus.de.

csus.de, imap.csus.de, mail.csus.de and smtp.csus.de all direct traffic to the IP address 87.106.129.107.

csus.de, imap.csus.de, mail.csus.de and smtp.csus.de each direct to 87.106.129.107.