🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`simplex4learning.de`

DNSSEC	⚠️ Not signed
A	2a01:4f8:d0a:2750::2^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
		PTR	`www48.your-server.de`
A	213.133.104.48^{🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1}
NS	`ns1.your-server.de` ⭐
		A	2a01:4f8:0:1::5ddc:1^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`ns1.your-server.de`
		A	213.133.100.102^{🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1}
			PTR	`ns1.your-server.de`
NS	`ns.second-ns.com`
		A	2a01:4f8:0:a101::b:1^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`ns.second-ns.com`
		A	213.239.204.242^{🇩🇪 Hetzner213.239.192.0/18 HETZNER-RZ-NBG-BLK2}
			PTR	`ns.second-ns.com`
NS	`ns3.second-ns.de`
		A	2001:67c:192c::add:b3^{🇩🇪 NORIS-NETWORK2001:67c:192c::/48}
			PTR	`ns3.second-ns.de`
		A	193.47.99.4^{🇩🇪 NORIS-NETWORK193.47.99.0/24}
			PTR	`ns3.second-ns.de`
MX	`213.133.104.48.simplex4learning.de` ⭐
TXT	`v=spf1 +a +mx ?all`
TXT	`_acme-challenge.simplex4learning.de. IN TXT XkkGHwQMEqFofKZZ-VAxyZQajCLdqrYSk...`
TXT	`_acme-challenge.www.simplex4learning.de. IN TXT iga99VK5JwjcBN-InT6Av-4GWMHll...`
SOA	`ns1.your-server.de`postmaster@your-server.de 2025-12-11 #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=1791141813

Same first word

simplex4learning.de

Previous names

Next names

DNS History

6 records (6 active, 0 former)

●NSns.second-ns.com2026-08-18 → 2026-10-04 · 2 obs

● 2026-08-18 10:18:14
● 2026-10-04 19:39:20

●NSns1.your-server.de2026-08-18 → 2026-10-04 · 2 obs

● 2026-08-18 10:18:14
● 2026-10-04 19:39:20

●NSns3.second-ns.de2026-08-18 → 2026-10-04 · 2 obs

● 2026-08-18 10:18:14
● 2026-10-04 19:39:20

●MX213.133.104.48.simplex4learning.de2026-08-18 → 2026-10-04 · 2 obs

● 2026-08-18 10:18:14
● 2026-10-04 19:39:20

●A213.133.104.482026-08-18 → 2026-10-04 · 2 obs

● 2026-08-18 10:18:14
● 2026-10-04 19:39:20

●A2a01:4f8:d0a:2750::22026-08-18 → 2026-10-04 · 2 obs

● 2026-08-18 10:18:14
● 2026-10-04 19:39:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
de	a.nic.de, f.nic.de, z.nic.de	-
simplex4learning.de	ns.second-ns.com, ns3.second-ns.de, ns1.your-server.de	4 records

✅ Authoritative Response

Server:213.133.100.102

NS records: ns.second-ns.com, ns3.second-ns.de, ns1.your-server.de

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for simplex4learning.de (unsigned zone)

⏱️ Timing

Total: 906ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`213.133.104.48`
AAAA	1	`2a01:4f8:d0a:2750::2`
NS	3	`ns.second-ns.com, ns1.your-server.de...`
MX	1	`213.133.104.48.simplex4learning.de (pri:`
TXT	3	`_acme-challenge.www.simplex4learning.de., v=spf1 +a +mx ?all...`
SOA	1	`ns1.your-server.de postmaster.your-serve`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns3.second-ns.de, ns1.your-server.de, ns3.second-ns.de...)

Analysis

IP Addresses

simplex4learning.de directs to two IP numbers, 213.133.104.48 and 2a01:4f8:d0a:2750::2

yvessuter.ch, mail.asbion.com, infantophismus.de plus two other host names have IP numbers in common with simplex4learning.de.

Name Servers

DNS for simplex4learning.de is handled by three authoritative name servers: ns.second-ns.com, ns3.second-ns.de and ns1.your-server.de.

simplex4learning.de partially shares its NS delegation with several other domains, including boat-bike.com, blumenhaus-peter.de, reiserecht-hh.de and two others.

Three hostnames — ns.second-ns.com, ns3.second-ns.de and ns1.your-server.de — each have two IP addresses: ns.second-ns.com has 213.239.204.242 and 2a01:4f8:0:a101::b:1, ns3.second-ns.de has 193.47.99.4 and 2001:67c:192c::add:b3, and ns1.your-server.de has 213.133.100.102 and 2a01:4f8:0:1::5ddc:1.

Mail Servers

simplex4learning.de uses one mail server — 213.133.104.48.simplex4learning.de.

simplex4learning.de - robtex.com