`server-01.dockerhost.dk`

CNAME	`dockerhost.dk`
DNSSEC	⚠️ Not signed
A	65.21.154.231^{🇫🇮 Hetzner65.21.0.0/16 HETZNER-DC}
		PTR	`server-01.dockerhost.dk`
NS	`hydrogen.ns.hetzner.com` ⭐
		A	2a01:4f8:0:1::add:1098^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`hydrogen.ns.hetzner.com`
		A	213.133.100.98^{🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1}
			PTR	`hydrogen.ns.hetzner.com`
NS	`helium.ns.hetzner.de`
		A	2001:67c:192c::add:5^{🇩🇪 NORIS-NETWORK2001:67c:192c::/48}
			PTR	`helium.ns.hetzner.de`
		A	193.47.99.5^{🇩🇪 NORIS-NETWORK193.47.99.0/24}
			PTR	`helium.ns.hetzner.de`
NS	`oxygen.ns.hetzner.com`
		A	2a01:4f8:0:1::add:2992^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`oxygen.ns.hetzner.com`
		A	88.198.229.192^{🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4}
			PTR	`oxygen.ns.hetzner.com`
MX	`mail.schumacher.dk` ⭐
		A	116.203.109.116^{🇩🇪 Hetzner116.203.0.0/16 HETZNER-DC}
			PTR	`gaston.schumacher.dk`
SOA	`hydrogen.ns.hetzner.com`dns@hetzner.com 2026-06-28 #15

`dockerhost.dk`

	DNSSEC	⚠️ Not signed
	A	65.21.154.231^{🇫🇮 Hetzner65.21.0.0/16 HETZNER-DC}
	NS	`hydrogen.ns.hetzner.com` ⭐
	NS	`helium.ns.hetzner.de`
	NS	`oxygen.ns.hetzner.com`
	MX	`mail.schumacher.dk` ⭐
	SOA	`hydrogen.ns.hetzner.com`dns@hetzner.com 2026-06-28 #15

PTR for

231.154.21.65.in-addr.arpa

Same first word

server-01.de

server-01.net

Similar names

server-10.de

server-10.us

server-10.com

server-10.top

DNS History

1 record (1 active, 0 former)

●CNAMEdockerhost.dk2026-08-08 → 2026-08-08 · 2 obs

● 2026-08-08 11:59:14
● 2026-08-08 11:59:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dk	b.nic.dk, c.nic.dk, h.nic.dk, l.nic.dk...	-
dockerhost.dk	helium.ns.hetzner.de, oxygen.ns.hetzner.com, hydrogen.ns.hetzner.com	-

✅ Authoritative Response

Server:213.133.100.98

NS records: helium.ns.hetzner.de, oxygen.ns.hetzner.com, hydrogen.ns.hetzner.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dockerhost.dk (unsigned zone)

⏱️ Timing

Total: 750ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`dockerhost.dk`

Analysis

IP Addresses

server-01.dockerhost.dk points to a single IP number: 65.21.154.231.

Further host names like 195.dk and dockerhost.dk overlap in IP numbers with server-01.dockerhost.dk.

Name Servers

Three name servers are authoritative for server-01.dockerhost.dk: hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com and helium.ns.hetzner.de.

There is at least partial name server overlap between server-01.dockerhost.dk and other domains — toula.de, mkdbadoldesloe.de, polski-sport.pl and two more among them.

The name servers robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de are often found in combination with these name servers.

hydrogen.ns.hetzner.com resolves to 213.133.100.98 and 2a01:4f8:0:1::add:1098. oxygen.ns.hetzner.com resolves to 88.198.229.192 and 2a01:4f8:0:1::add:2992. helium.ns.hetzner.de resolves to 193.47.99.5 and 2001:67c:192c::add:5. All three hostnames point to two IP numbers each.

Mail Servers

server-01.dockerhost.dk has one mail server: mail.schumacher.dk.

server-01.dockerhost.dk's MX records match those of several other domains — for example schumacher.dk, qr1.dk, 195.dk and dockerhost.dk.

There is one IP number for mail.schumacher.dk: 116.203.109.116.

server-01.dockerhost.dk - robtex.com