top-course.de - robtex.com
top-course.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=1784328512 | ||||||
Same first word
top-course.de |
Similar names
DNS History
9 records (4 active, 5 former)
○NSns1.hans.hosteurope.de2015-08-13 → 2017-04-10 · 4 obs
● 2017-04-10 13:19:44
○ 2026-02-15 19:46:52
○ 2026-07-17 23:20:12
○NSns2.hans.hosteurope.de2015-08-13 → 2017-04-10 · 4 obs
● 2017-04-10 13:19:44
○ 2026-02-15 19:46:52
○ 2026-07-17 23:20:12
●NSns21.domaincontrol.com2026-02-15 → 2026-07-17 · 3 obs
● 2026-02-15 19:46:52
● 2026-07-17 23:20:12
●NSns22.domaincontrol.com2026-02-15 → 2026-07-17 · 3 obs
● 2026-02-15 19:46:52
● 2026-07-17 23:20:12
○MXmx0.top-course.de2015-08-13 → 2017-04-10 · 4 obs
● 2017-04-10 13:19:44
○ 2026-02-15 19:46:52
○ 2026-07-17 23:20:12
●MXtopcourse-de0i.mail.protection.outlook.com2026-02-15 → 2026-07-17 · 3 obs
● 2026-02-15 19:46:52
● 2026-07-17 23:20:12
○A2a01:488:42:1000:50ed:8455:24:a6242015-08-13 → 2017-04-10 · 4 obs
● 2017-04-10 13:19:44
○ 2026-02-15 19:46:52
○ 2026-07-17 23:20:12
○A80.237.132.852015-08-13 → 2017-04-10 · 4 obs
● 2017-04-10 13:19:44
○ 2026-02-15 19:46:52
○ 2026-07-17 23:20:12
●A92.205.171.912026-02-15 → 2026-07-17 · 3 obs
● 2026-02-15 19:46:52
● 2026-07-17 23:20:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| de | z.nic.de, a.nic.de, f.nic.de | - |
| top-course.de | ns22.domaincontrol.com, ns21.domaincontrol.com | - |
✅ Authoritative Response
Server:173.201.68.11
NS records: ns22.domaincontrol.com, ns21.domaincontrol.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for top-course.de (unsigned zone)
⏱️ Timing
Total: 777ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 92.205.171.91 |
| NS | 2 | ns21.domaincontrol.com, ns22.domaincontrol.com |
| MX | 1 | topcourse-de0i.mail.protection.outlook.c |
| TXT | 2 | NETORGFT19533894.onmicrosoft.com, v=spf1 include:secureserver.net -all |
| SOA | 1 | ns21.domaincontrol.com dns.jomax.net |
Analysis
IP Addresses
top-course.de directs to one IP number, which is 92.205.171.91.
Among the host names that share IP numbers with top-course.de are minazu.de, www.hausermarkus.de, colorreference.de and two others.
Name Servers
top-course.de has two authoritative name servers — ns21.domaincontrol.com and ns22.domaincontrol.com.
top-course.de has the same name server delegation as a number of other domains, such as cowboyhousingguide.com, verify-my-account.com, mobilit.us and two more.
The name servers for top-course.de overlap at least partially with those of other domains — for example totalsolutionsgroup.net.
Both ns21.domaincontrol.com and ns22.domaincontrol.com have two IP addresses each. ns21.domaincontrol.com resolves to 97.74.100.11 and 2603:5:2141::b; ns22.domaincontrol.com resolves to 173.201.68.11 and 2603:5:2241::b.
Mail Servers
top-course.de routes its mail through a single mail server, topcourse-de0i.mail.protection.outlook.com.
topcourse-de0i.mail.protection.outlook.com directs to 8 IP numbers, including 52.101.168.0, 52.101.170.0 and 52.101.170.1, along with 5 other.