`learning-systems.org`

DNSSEC	⚠️ Not signed
A	192.124.27.133^{🇩🇪 MPG-FR-S192.124.26.0/23 MPIK-TUE}
		PTR	`xerex.tuebingen.mpg.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.learning-systems.org` ⭐
		A	192.124.27.122^{🇩🇪 MPG-FR-S192.124.26.0/23 MPIK-TUE}
			PTR	`isweb.is.tuebingen.mpg.de`
SOA	`ns1.first-ns.de`dns@hetzner.com 2023-10-24 #1

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1774450561

Subdomains

mail.learning-systems.org

Same first word

learning-systems.org

learning-systems.ch

DNS History

9 records (5 active, 4 former)

●NSns1.first-ns.de2016-04-06 → 2026-03-25 · 3 obs

○ 2016-01-04 02:29:58
● 2016-04-06 01:21:58
● 2026-03-25 15:20:04

○NSns1.hover.com2015-06-15 → 2016-01-04 · 4 obs

● 2015-06-15 04:04:36
● 2016-01-04 02:29:58
○ 2016-04-06 01:21:58
○ 2026-03-25 15:20:04

○NSns2.hover.com2015-06-15 → 2016-01-04 · 4 obs

● 2015-06-15 04:04:36
● 2016-01-04 02:29:58
○ 2016-04-06 01:21:58
○ 2026-03-25 15:20:04

●NSrobotns2.second-ns.de2016-04-06 → 2026-03-25 · 3 obs

○ 2016-01-04 02:29:58
● 2016-04-06 01:21:58
● 2026-03-25 15:20:04

●NSrobotns3.second-ns.com2016-04-06 → 2026-03-25 · 3 obs

○ 2016-01-04 02:29:58
● 2016-04-06 01:21:58
● 2026-03-25 15:20:04

●MXmail.learning-systems.org2016-04-06 → 2026-03-25 · 3 obs

○ 2016-01-04 02:29:58
● 2016-04-06 01:21:58
● 2026-03-25 15:20:04

○MXmx.hover.com.cust.hostedemail.com2015-06-15 → 2016-01-04 · 4 obs

● 2015-06-15 04:04:36
● 2016-01-04 02:29:58
○ 2016-04-06 01:21:58
○ 2026-03-25 15:20:04

○A192.124.27.1222015-06-15 → 2020-01-18 · 4 obs

● 2015-06-15 04:04:36
● 2020-01-18 11:42:04
○ 2026-02-17 02:29:42
○ 2026-03-25 15:20:04

●A192.124.27.1332026-02-17 → 2026-03-25 · 3 obs

○ 2020-01-18 11:42:04
● 2026-02-17 02:29:42
● 2026-03-25 15:20:04

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
learning-systems.org	robotns3.second-ns.com, ns1.first-ns.de, robotns2.second-ns.de	-

✅ Authoritative Response

Server:213.239.242.238

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for learning-systems.org (unsigned zone)

⏱️ Timing

Total: 808ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`192.124.27.133`
NS	3	`ns1.first-ns.de, robotns2.second-ns.de...`
MX	1	`mail.learning-systems.org (pri: 10)`
SOA	1	`ns1.first-ns.de dns.hetzner.com`

Analysis

Hierarchy

The parent of mail.learning-systems.org is learning-systems.org.

IP Addresses

learning-systems.org points to a single IP: 192.124.27.133.

Other host names, for instance computer-vision.blog, cyber-valley.eu, breakthroughhub.ai, causalworld.org and cyber-valley.net share IP numbers with learning-systems.org.

Name Servers

learning-systems.org is delegated to three name servers: robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de.

learning-systems.org partially shares name servers with other domains; examples include trust.myhostingdomain.net, symbios-med.com, zuniwave.com, support-net.de and linuco.com.

These name servers are commonly used with hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com and helium.ns.hetzner.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

learning-systems.org is handled by a single mail server, mail.learning-systems.org.

mail.learning-systems.org points to a single IP: 192.124.27.122.

learning-systems.org - robtex.com