`schul-intranet.com`

DNSSEC	⚠️ Not signed
A	188.40.234.154^{🇩🇪 Hetzner188.40.0.0/16 HETZNER-RZ-FKS-BLK1}
		PTR	`static.154.234.40.188.clients.your-server.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`
		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`
MX	`mail.schul-intranet.com` ⭐
		A	188.40.234.154^{🇩🇪 Hetzner188.40.0.0/16 HETZNER-RZ-FKS-BLK1}
			PTR	`static.154.234.40.188.clients.your-server.de`
SOA	`ns1.first-ns.de`postmaster@robot.first-ns.de 2013-02-20 #0

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1776093567

Subdomains

mail.schul-intranet.com

Same first word

schul-intranet.org

schul-intranet.de

schul-intranet.eu

schul-intranet.com

DNS History

5 records (5 active, 0 former)

●NSns1.first-ns.de2015-07-24 → 2026-04-13 · 2 obs

● 2015-07-24 22:27:46
● 2026-04-13 15:40:44

●NSrobotns2.second-ns.de2015-07-24 → 2026-04-13 · 2 obs

● 2015-07-24 22:27:46
● 2026-04-13 15:40:44

●NSrobotns3.second-ns.com2015-07-24 → 2026-04-13 · 2 obs

● 2015-07-24 22:27:46
● 2026-04-13 15:40:44

●MXmail.schul-intranet.com2015-07-24 → 2026-04-13 · 2 obs

● 2015-07-24 22:27:46
● 2026-04-13 15:40:44

●A188.40.234.1542015-07-24 → 2026-04-13 · 2 obs

● 2015-07-24 22:27:46
● 2026-04-13 15:40:44

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, m.gtld-servers.net, c.gtld-servers.net, i.gtld-servers.net...	-
schul-intranet.com	ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com	2 records

✅ Authoritative Response

Server:193.47.99.3

NS records: ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for schul-intranet.com (unsigned zone)

⏱️ Timing

Total: 755ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`188.40.234.154`
NS	3	`robotns3.second-ns.com, ns1.first-ns.de...`
MX	1	`mail.schul-intranet.com (pri: 10)`
SOA	1	`ns1.first-ns.de postmaster.robot.first-n`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (robotns3.second-ns.com, robotns3.second-ns.com)

Analysis

Hierarchy

schul-intranet.com is the parent of mail.schul-intranet.com.

IP Addresses

schul-intranet.com resolves to one IP number: 188.40.234.154.

Other host names, for instance schul-intranet.eu, mail.schul-intranet.com, mail.schul-intranet.eu and static.154.234.40.188.clients.your-server.de share IP numbers with schul-intranet.com.

Name Servers

schul-intranet.com is delegated to three name servers robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de.

schul-intranet.com at least partially shares name servers with other domains, for instance messing.eu, f1-reifen.eu, nuloxx.eu, wildagent.de and vokke.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.

Mail Servers

schul-intranet.com is handled by a single mail server, mail.schul-intranet.com.

mail.schul-intranet.com resolves to IP 188.40.234.154.

schul-intranet.com - robtex.com