3u-dcs.de - robtex.com
3u-dcs.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=1778403072 | ||||||
Subdomains
ns-auth02.3u-dcs.de |
ns-auth01.3u-dcs.de |
Same first word
3u-dcs.de |
DNS History
7 records (4 active, 3 former)
○NSns-cust1.de.lambdanet.net2015-05-12 → 2015-05-12 · 3 obs
○ 2015-10-11 03:16:08
○ 2026-05-10 09:24:56
●MX3udcs-de0e.mail.protection.outlook.com2017-06-03 → 2026-05-10 · 3 obs
● 2017-06-03 15:28:12
● 2026-05-10 09:24:56
○MXsmtp.3u.net2015-05-12 → 2016-09-23 · 4 obs
● 2016-09-23 14:10:44
○ 2017-06-03 15:28:12
○ 2026-05-10 09:24:56
●A185.82.85.1462026-05-09 → 2026-05-10 · 3 obs
● 2026-05-09 17:56:52
● 2026-05-10 09:24:56
○A81.209.151.192015-05-12 → 2017-06-03 · 4 obs
● 2017-06-03 15:28:12
○ 2026-05-09 17:56:52
○ 2026-05-10 09:24:56
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | a.nic.de, f.nic.de, z.nic.de | - |
| 3u-dcs.de | ns1.3u.net, ns2.3u.net | - |
✅ Authoritative Response
Server:81.209.151.254
NS records: ns1.3u.net, ns2.3u.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 3u-dcs.de (unsigned zone)
⏱️ Timing
Total: 996ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 185.82.85.146 |
| NS | 2 | ns1.3u.net, ns2.3u.net |
| MX | 1 | 3udcs-de0e.mail.protection.outlook.com ( |
| TXT | 2 | v=spf1 a:smtp.3u.net include:spf.protect, MS=ms28286031 |
| SOA | 1 | ns1.3u.net ops.3u.net |
Analysis
Hierarchy
3u-dcs.de is a parent of ns-auth02.3u-dcs.de and ns-auth01.3u-dcs.de.
IP Addresses
3u-dcs.de maps to IP address 185.82.85.146.
Name Servers
Two name servers ns1.3u.net and ns2.3u.net are delegated to 3u-dcs.de.
3u-dcs.de uses the same name server configuration as other domains, such as 151.209.81.in-addr.arpa, 3u-energy.de, 218.239.80.in-addr.arpa, fussbodenheizung-online.de and exacor.de.
Host names with two IPs:
ns1.3u.net points to 2a05:8e40:0:2::3:42 and 81.209.151.254.
ns2.3u.net points to 2a05:8e40:0:2::3:52 and 83.125.107.34.
Mail Servers
3u-dcs.de is handled by a single mail server, 3udcs-de0e.mail.protection.outlook.com.
3udcs-de0e.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::, 2a01:111:f403:ca04::e, 2a01:111:f403:ca09::1, 2a01:111:f403:ca09::7, 52.101.68.25, 52.101.68.39, 52.101.73.19 and 52.101.73.28.