dualesstudium.de - robtex.com
dualesstudium.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=1778472961 | ||||||
Subdomains
mail.dualesstudium.de |
Same first word
dualesstudium.de |
DNS History
6 records (6 active, 0 former)
●NSns1.first-ns.de2015-07-16 → 2026-05-11 · 2 obs
● 2026-05-11 04:41:10
●NSrobotns2.second-ns.de2015-07-16 → 2026-05-11 · 2 obs
● 2026-05-11 04:41:10
●NSrobotns3.second-ns.com2015-07-16 → 2026-05-11 · 2 obs
● 2026-05-11 04:41:10
●MXdualesstudium-de01e.mail.eo.outlook.com2015-07-16 → 2026-05-11 · 2 obs
● 2026-05-11 04:41:10
●MXmail.dualesstudium.de2015-07-16 → 2026-05-11 · 2 obs
● 2026-05-11 04:41:10
●A148.251.104.1422015-07-16 → 2026-05-11 · 2 obs
● 2026-05-11 04:41:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| dualesstudium.de | robotns2.second-ns.de, robotns3.second-ns.com, ns1.first-ns.de | - |
✅ Authoritative Response
Server:213.239.242.238
NS records: robotns2.second-ns.de, robotns3.second-ns.com, ns1.first-ns.de
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dualesstudium.de (unsigned zone)
⏱️ Timing
Total: 1112ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 148.251.104.142 |
| NS | 3 | robotns3.second-ns.com, ns1.first-ns.de... |
| MX | 2 | dualesstudium-de01e.mail.eo.outlook.com , mail.dualesstudium.de (pri: 10) |
| TXT | 1 | v=spf1 include:outlook.com ~all |
| SOA | 1 | ns1.first-ns.de dns.hetzner.com |
Analysis
Hierarchy
mail.dualesstudium.de has dualesstudium.de as its parent.
IP Addresses
dualesstudium.de maps to IP address 148.251.104.142.
Other host names, for example, mail.dualesstudium.de share IP numbers with dualesstudium.de.
Name Servers
dualesstudium.de is delegated to name servers robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de.
dualesstudium.de at least partially shares name servers with other domains such as original-herm-sprenger-dog-collars-japan.com, der-zwicker.de, treloparty.com, xnedder.org and axf.de.
these name servers are commonly used with the name servers hydrogen.ns.hetzner.com.
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
Two mail servers handle dualesstudium.de: mail.dualesstudium.de and dualesstudium-de01e.mail.eo.outlook.com.
Hosts with eight IP numbers: dualesstudium-de01e.mail.eo.outlook.com points to 2a01:111:f403:ca04::6, 2a01:111:f403:ca04::c, 2a01:111:f403:ca04::d, 2a01:111:f403:ca09::2, 52.101.68.29, 52.101.73.12, 52.101.73.15 and 52.101.73.26.
Hosts with one IP number: mail.dualesstudium.de points to 148.251.104.142.