`srv21.dc-cluster.de`

DNSSEC	⚠️ Not signed
A	2a02:cbf3:203::21^{🇩🇪 PLUSSERVER-ASN12a02:cbf3::/32 PlusServer GmbH}
		PTR	`srv21.dc-cluster.de`
A	62.138.208.21^{🇩🇪 PLUSSERVER-ASN162.138.208.0/23 PS-Net}

`dc-cluster.de`

	DNSSEC	⚠️ Not signed
	A	46.163.90.170^{🇩🇪 PLUSSERVER-ASN146.163.88.0/21 PS-Net}
	NS	`ns1.dc-cluster.de` ⭐
	NS	`ns2.dc-cluster.de`
	NS	`ns3.dc-cluster.de`
	NS	`ns4.dc-cluster.de`
	MX	`mail.dc-cluster.de` ⭐
	TXT	`v=spf1 a mx include:spf.dc-cluster.de ~all`
	SOA	`ns1.dc-cluster.de`ssl@dc-solution.de 2025-11-03 #25

📈 Tranco rank: #311,263

PTR for

21.208.138.62.in-addr.arpa

181.90.163.46.in-addr.arpa

1.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.2.d.0.0.0.2.8.8.4.0.1.0.a.2.ip6.arpa

1.2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.3.0.2.0.3.f.b.c.2.0.a.2.ip6.arpa

Same first word

srv21.com

srv21.de

Similar names

12srv.com

r21vs.lv

svr21.com

srv12.de

v12rs.com

DNS History

4 records (2 active, 2 former)

○A2a01:488:2000:d201::212017-03-22 → 2026-03-07 · 4 obs

● 2017-03-22 20:16:42
● 2026-03-07 17:32:30
○ 2026-04-19 14:28:48
○ 2026-05-13 00:56:10

●A2a02:cbf3:203::212026-04-19 → 2026-05-13 · 3 obs

○ 2026-03-07 17:32:30
● 2026-04-19 14:28:48
● 2026-05-13 00:56:10

○A46.163.90.1812017-03-22 → 2020-12-05 · 4 obs

● 2017-03-22 20:16:42
● 2020-12-05 16:59:02
○ 2026-03-07 17:32:30
○ 2026-05-13 00:56:10

●A62.138.208.212026-03-07 → 2026-05-13 · 3 obs

○ 2020-12-05 16:59:02
● 2026-03-07 17:32:30
● 2026-05-13 00:56:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
dc-cluster.de	ns2.dc-cluster.de, ns3.dc-cluster.de, ns4.dc-cluster.de, ns1.dc-cluster.de	8 records

✅ Authoritative Response

Server:185.132.35.227

NS records: ns2.dc-cluster.de, ns3.dc-cluster.de, ns4.dc-cluster.de, ns1.dc-cluster.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dc-cluster.de (unsigned zone)

⏱️ Timing

Total: 817ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`62.138.208.21`
AAAA	1	`2a02:cbf3:203::21`

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (ns4.dc-cluster.de, ns3.dc-cluster.de, ns2.dc-cluster.de...)

Analysis

IP Addresses

The entity srv21.dc-cluster.de points to two IP numbers: 2a02:cbf3:203::21 and 62.138.208.21.

Other host names for example matomo.minitube.com, www.minitube.com and minitube.com share IP numbers with srv21.dc-cluster.de.

srv21.dc-cluster.de - robtex.com