`fachschule-informatik.de`

DNSSEC	⚠️ Not signed
A	167.233.4.104^{🇩🇪 Hetzner167.233.0.0/16 HETZNER-DC}
		PTR	`ws05.lederer-hosting.de`
NS	`ns1.first-ns.de` ⭐
		A	2a01:4f8:0:a101::a:1^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`ns1.first-ns.de`
		A	213.239.242.238^{🇩🇪 Hetzner213.239.192.0/18 HETZNER-RZ-NBG-BLK2}
			PTR	`ns1.first-ns.de`
NS	`robotns2.second-ns.de`
		A	2a01:4f8:0:1::5ddc:2^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`robotns2.second-ns.de`
		A	213.133.100.103^{🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1}
			PTR	`robotns2.second-ns.de`
NS	`robotns3.second-ns.com` ⚠️ Not in parent delegation
		A	2001:67c:192c::add:a3^{🇩🇪 NORIS-NETWORK2001:67c:192c::/48}
			PTR	`robotns3.second-ns.com`
		A	193.47.99.3^{🇩🇪 NORIS-NETWORK193.47.99.0/24}
			PTR	`robotns3.second-ns.com`
SOA	`ns1.first-ns.de`dns@hetzner.com 2026-02-04 #0

`de`

	DNSSEC	🔒 Signed (DS record present)
	NS	`f.nic.de` ⭐
	NS	`a.nic.de`
	NS	`l.de.net` ⚠️ Not in parent delegation
	NS	`n.de.net` ⚠️ Not in parent delegation
	NS	`s.de.net` ⚠️ Not in parent delegation
	NS	`z.nic.de`
	SOA	`f.nic.de`dns-operations@denic.de serial=1778537356

Same first word

fachschule-informatik.de

DNS History

6 records (4 active, 2 former)

●NSns1.first-ns.de2015-06-16 → 2026-05-11 · 2 obs

● 2015-06-16 06:48:10
● 2026-05-11 22:32:50

●NSrobotns2.second-ns.de2015-06-16 → 2026-05-11 · 2 obs

● 2015-06-16 06:48:10
● 2026-05-11 22:32:50

●NSrobotns3.second-ns.com2026-05-11 → 2026-05-11 · 3 obs

○ 2015-06-16 06:48:10
● 2026-05-11 18:28:40
● 2026-05-11 22:32:50

○MXmail.fachschule-informatik.de2015-06-16 → 2018-05-23 · 4 obs

● 2015-06-16 06:48:10
● 2018-05-23 21:51:56
○ 2026-05-11 18:28:40
○ 2026-05-11 22:32:50

●A167.233.4.1042026-05-11 → 2026-05-11 · 3 obs

○ 2018-05-23 21:51:56
● 2026-05-11 18:28:40
● 2026-05-11 22:32:50

○A176.9.12.762015-06-16 → 2018-05-23 · 4 obs

● 2015-06-16 06:48:10
● 2018-05-23 21:51:56
○ 2026-05-11 18:28:40
○ 2026-05-11 22:32:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
fachschule-informatik.de	robotns2.second-ns.de, ns1.first-ns.de	-

✅ Authoritative Response

Server:213.239.242.238

NS records: robotns2.second-ns.de, ns1.first-ns.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for fachschule-informatik.de (unsigned zone)

⏱️ Timing

Total: 1701ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`167.233.4.104`
NS	3	`ns1.first-ns.de, robotns2.second-ns.de...`
SOA	1	`ns1.first-ns.de dns.hetzner.com`

Analysis

IP Addresses

fachschule-informatik.de points to a single IP address: 167.233.4.104.

Other host names such as ita-ausbildung.de, klausmeier.de, if-legends.org, www.mocagh.org and ws05.lederer-hosting.de share IP numbers with fachschule-informatik.de.

Name Servers

fachschule-informatik.de is delegated to three name servers: robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de.

At least part of the name servers for fachschule-informatik.de are shared with other domains, for instance imv-online.de, milanocaffe.com, kollegenforum.de, braincontrol.org and feuerwehr-eschweiler.de.

Host names with two IP numbers:

robotns3.second-ns.com points to 2001:67c:192c::add:a3 and 193.47.99.3

ns1.first-ns.de points to 2a01:4f8:0:a101::a:1 and 213.239.242.238

robotns2.second-ns.de points to 2a01:4f8:0:1::5ddc:2 and 213.133.100.103

fachschule-informatik.de - robtex.com