simplex4learning.de - dns.ninja
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 ⭐ | ||||||
| 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 | ||||||
| MX | 213.133.104.48.simplex4learning.de ⭐ | ||||||
| TXT | _acme-challenge.simplex4learning.de. IN TXT XkkGHwQMEqFofKZZ-VAxyZQajCLdqrYSk... | ||||||
| TXT | _acme-challenge.www.simplex4learning.de. IN TXT iga99VK5JwjcBN-InT6Av-4GWMHll... | ||||||
| TXT | v=spf1 +a +mx ?all | ||||||
| SOA | ns1.your-server.depostmaster@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.dedns-operations@denic.de serial=1787298377 | ||||||
Same first word
simplex4learning.de |
Previous names
Next names
DNS History
6 records (6 active, 0 former)
●NSns.second-ns.com2026-08-18 → 2026-08-21 · 2 obs
● 2026-08-21 07:49:38
●NSns1.your-server.de2026-08-18 → 2026-08-21 · 2 obs
● 2026-08-21 07:49:38
●NSns3.second-ns.de2026-08-18 → 2026-08-21 · 2 obs
● 2026-08-21 07:49:38
●MX213.133.104.48.simplex4learning.de2026-08-18 → 2026-08-21 · 2 obs
● 2026-08-21 07:49:38
●A213.133.104.482026-08-18 → 2026-08-21 · 2 obs
● 2026-08-21 07:49:38
●A2a01:4f8:d0a:2750::22026-08-18 → 2026-08-21 · 2 obs
● 2026-08-21 07:49:38
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| simplex4learning.de | ns3.second-ns.de, ns.second-ns.com, ns1.your-server.de | 4 records |
✅ Authoritative Response
Server:193.47.99.4
NS records: ns3.second-ns.de, ns.second-ns.com, ns1.your-server.de
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for simplex4learning.de (unsigned zone)
⏱️ Timing
Total: 781ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 213.133.104.48 |
| AAAA | 1 | 2a01:4f8:d0a:2750::2 |
| NS | 3 | ns3.second-ns.de, ns.second-ns.com... |
| 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 points to the IP addresses 213.133.104.48 and 2a01:4f8:d0a:2750::2
yvessuter.ch, mail.asbion.com, www.metronix.de and two other host names share IP numbers with simplex4learning.de.
Name Servers
Three name servers are authoritative for simplex4learning.de: ns.second-ns.com, ns3.second-ns.de and ns1.your-server.de.
At least some of simplex4learning.de's name servers are shared with other domains, for example sigma-it.de, diezahnarztpraxis-wangen.de, meinbeitrag.org and two more.
These name servers tend to be used in conjunction with the name servers ns1.first-ns.de.
Hostnames that resolve to two IP addresses:
ns.second-ns.com maps to two IP addresses — 213.239.204.242 and 2a01:4f8:0:a101::b:1.
Mail Servers
Mail for simplex4learning.de is handled by a single mail server, 213.133.104.48.simplex4learning.de.