opensourcelearning.de - dns.ninja
opensourcelearning.de
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=1792117879 | ||||||
Subdomains
mail.opensourcelearning.de |
Same first word
opensourcelearning.xyz |
opensourcelearning.org |
opensourcelearning.com |
opensourcelearning.de |
opensourcelearning.co.uk |
opensourcelearning.ca |
opensourcelearning.net |
Similar names
Previous names
Next names
DNS History
7 records (7 active, 0 former)
●NSroot-dns.netcup.net2026-08-29 → 2026-10-16 · 2 obs
● 2026-10-16 02:58:54
●NSsecond-dns.netcup.net2026-08-29 → 2026-10-16 · 2 obs
● 2026-10-16 02:58:54
●NSthird-dns.netcup.net2026-08-29 → 2026-10-16 · 2 obs
● 2026-10-16 02:58:54
●MXmail.opensourcelearning.de2026-08-29 → 2026-10-16 · 2 obs
● 2026-10-16 02:58:54
●MXmx2e2d.netcup.net2026-08-29 → 2026-10-16 · 2 obs
● 2026-10-16 02:58:54
●A2a03:4000:30:c006::14:98822026-08-29 → 2026-10-16 · 2 obs
● 2026-10-16 02:58:54
●A91.204.46.432026-08-29 → 2026-10-16 · 2 obs
● 2026-10-16 02:58:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| opensourcelearning.de | third-dns.netcup.net, second-dns.netcup.net, root-dns.netcup.net | - |
✅ Authoritative Response
Server:46.38.225.225
NS records: third-dns.netcup.net, second-dns.netcup.net, root-dns.netcup.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for opensourcelearning.de (unsigned zone)
⏱️ Timing
Total: 1596ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 91.204.46.43 |
| AAAA | 1 | 2a03:4000:30:c006::14:9882 |
| NS | 3 | third-dns.netcup.net, second-dns.netcup.net... |
| MX | 2 | mx2e2d.netcup.net (pri: 50), mail.opensourcelearning.de (pri: 10) |
| TXT | 2 | v=spf1 mx a include:_spf.webhosting.syst, google-site-verification=pKLupJVx6s9Y_fw |
| SOA | 1 | root-dns.netcup.net dnsadmin.netcup.net |
Analysis
Hierarchy
mail.opensourcelearning.de is a subdomain of opensourcelearning.de.
IP Addresses
opensourcelearning.de has two IP addresses: 91.204.46.43 and 2a03:4000:30:c006::14:9882
Among the host names that share IP numbers with opensourcelearning.de are handundpfote-lohfelden.de, mtzcichy.de, mx0.feelthemoment.de and two others.
Name Servers
Three name servers are authoritative for opensourcelearning.de: root-dns.netcup.net, second-dns.netcup.net and third-dns.netcup.net.
The name servers of opensourcelearning.de overlap at least partially with those of other domains — among them peterknabe.com, canapemix.com, renate-strohm.de and two more.
root-dns.netcup.net resolves to 46.38.225.225 and 2a03:4000:0:1::e1e1. second-dns.netcup.net resolves to 37.221.199.199 and 2a03:4000:2:24b::c7c7. third-dns.netcup.net resolves to 188.68.63.68 and 2a03:4001:0:106::3f44. All three hostnames point to two IP numbers each.
Mail Servers
The MX records for opensourcelearning.de point to two mail servers: mail.opensourcelearning.de and mx2e2d.netcup.net.
opensourcelearning.de shares at least some of its mail servers with other domains — for example erlebnisfuehrungen-frankfurt.de, afriboomcrowd.com, opsedi.de and two more.
Hosts with two IP numbers each:
mx2e2d.netcup.net maps to two IP addresses — 91.204.46.45 and 2a03:4000:0:3ad:4809:eeff:fe57:f839.
Hosts that resolve to one IP address:
mail.opensourcelearning.de points to the IP address 91.204.46.45.
These two host names — mx2e2d.netcup.net and mail.opensourcelearning.de — each point to 91.204.46.45 IP addresses.