`lean-academy.de`

DNSSEC	⚠️ Not signed
A	85.13.145.57^{🇩🇪 NMM-AS85.13.145.0/24 Neue Medien Muennich}
		PTR	`dd38804.kasserver.com`
NS	`ns5.kasserver.com` ⭐
		A	85.13.128.3^{🇩🇪 NMM-AS85.13.128.0/24 Neue Medien Muennich}
			PTR	`ns5.kasserver.com`
NS	`ns6.kasserver.com`
		A	85.13.159.101^{🇩🇪 NMM-AS85.13.159.0/24 Neue Medien Muennich}
			PTR	`ns6.kasserver.com`
MX	`w00a0368.kasserver.com` ⭐
		A	85.13.145.57^{🇩🇪 NMM-AS85.13.145.0/24 Neue Medien Muennich}
			PTR	`dd38804.kasserver.com`
TXT	`v=spf1 a mx include:spf.kasserver.com ~all`
SOA	`ns5.kasserver.com`hostmaster@kasserver.com serial=2602281124

`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=1784870120

Subdomains

mail.lean-academy.de

Same first word

lean-academy.de

lean-academy.nl

lean-academy.eu

lean-academy.be

DNS History

6 records (4 active, 2 former)

●NSns5.kasserver.com2015-06-14 → 2026-07-24 · 2 obs

● 2015-06-14 07:54:24
● 2026-07-24 05:39:52

●NSns6.kasserver.com2015-06-14 → 2026-07-24 · 2 obs

● 2015-06-14 07:54:24
● 2026-07-24 05:39:52

○MXmail.lean-academy.de2015-06-14 → 2016-12-06 · 4 obs

● 2015-06-14 07:54:24
● 2016-12-06 02:55:06
○ 2016-12-29 12:02:46
○ 2026-07-24 05:39:52

●MXw00a0368.kasserver.com2016-12-29 → 2026-07-24 · 3 obs

○ 2016-12-06 02:55:06
● 2016-12-29 12:02:46
● 2026-07-24 05:39:52

○A85.13.139.2492015-06-14 → 2018-01-28 · 4 obs

● 2015-06-14 07:54:24
● 2018-01-28 05:07:52
○ 2026-07-02 12:22:36
○ 2026-07-24 05:39:52

●A85.13.145.572026-07-02 → 2026-07-24 · 3 obs

○ 2018-01-28 05:07:52
● 2026-07-02 12:22:36
● 2026-07-24 05:39:52

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
lean-academy.de	ns5.kasserver.com, ns6.kasserver.com	-

✅ Authoritative Response

Server:85.13.159.101

NS records: ns5.kasserver.com, ns6.kasserver.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for lean-academy.de (unsigned zone)

⏱️ Timing

Total: 896ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`85.13.145.57`
NS	2	`ns5.kasserver.com, ns6.kasserver.com`
MX	1	`w00a0368.kasserver.com (pri: 10)`
TXT	1	`v=spf1 a mx include:spf.kasserver.com ~a`
SOA	1	`ns5.kasserver.com hostmaster.kasserver.c`

Analysis

Hierarchy

lean-academy.de is a parent domain of mail.lean-academy.de.

IP Addresses

lean-academy.de points to a single IP number: 85.13.145.57.

Additional host names — inpro-kl.de, w01533a7.kasserver.com, w0155436.kasserver.com and two others — share IP numbers with lean-academy.de.

Name Servers

lean-academy.de is delegated to two name servers: ns5.kasserver.com and ns6.kasserver.com.

lean-academy.de shares its name server setup with other domains, including grafikdesign-mannheim.de, mobispace.net, krav-maga.equipment and two others.

lean-academy.de shares at least some of its name servers with other domains, including betenbewegen.de, geier-physiotherapie.de, aoscom.de and two others.

These name servers are frequently seen alongside the name servers a-dns-service.de, ns3.kas-dns-server.de, ns3.ai-dns.de and ns5.name-server-kas.de.

ns5.kasserver.com and ns6.kasserver.com each resolve to one IP number: ns5.kasserver.com points to 85.13.128.3 and ns6.kasserver.com points to 85.13.159.101.

Mail Servers

lean-academy.de has one mail server: w00a0368.kasserver.com.

w00a0368.kasserver.com resolves to a single IP number: 85.13.145.57.

lean-academy.de - robtex.com

lean-academy.de

de