linuxcourse.nl - dns.ninja
linuxcourse.nl
| DNSSEC | ⚠️ Not signed | ||||||
| A | 213.214.122.17 | ||||||
| NS | ns1.msgc.ac ⭐ | ||||||
| NS | ns4.sentia.nl | ||||||
| NS | ns5.sentia.nl | ||||||
| NS | ns6.sentia.net | ||||||
| NS | ns7.sentia.net | ||||||
| SOA | ns1.msgc.achostmaster@linuxcourse.nl 2017-06-13 #16 | ||||||
nl
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns1.dns.nl ⭐ | ||||||
| NS | ns3.dns.nl | ||||||
| NS | ns4.dns.nl | ||||||
| TXT | nl zone update: 2026-06-26 14:30:02 +0000 (EPOCH 1782484202) | ||||||
| SOA | ns1.dns.nldns@sidn.nl 2026-06-26 #29 | ||||||
Same first word
linuxcourse.nl |
linuxcourse.com |
Similar names
DNS History
13 records (6 active, 7 former)
○NSns1.fastxs.net2015-07-22 → 2016-07-18 · 4 obs
● 2015-07-22 05:49:38
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
●NSns1.msgc.ac2026-03-11 → 2026-06-26 · 3 obs
○ 2018-01-03 08:01:06
● 2026-03-11 17:43:50
● 2026-06-26 15:24:24
● 2026-03-11 17:43:50
● 2026-06-26 15:24:24
○NSns2.fastxs.net2015-07-22 → 2016-07-18 · 4 obs
● 2015-07-22 05:49:38
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
○NSns3.fastxs.net2015-07-22 → 2016-07-18 · 4 obs
● 2015-07-22 05:49:38
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
●NSns4.sentia.nl2018-01-03 → 2026-06-26 · 3 obs
○ 2016-07-18 00:53:16
● 2018-01-03 08:01:06
● 2026-06-26 15:24:24
● 2018-01-03 08:01:06
● 2026-06-26 15:24:24
●NSns5.sentia.nl2018-01-03 → 2026-06-26 · 3 obs
○ 2016-07-18 00:53:16
● 2018-01-03 08:01:06
● 2026-06-26 15:24:24
● 2018-01-03 08:01:06
● 2026-06-26 15:24:24
●NSns6.sentia.net2018-01-03 → 2026-06-26 · 3 obs
○ 2016-07-18 00:53:16
● 2018-01-03 08:01:06
● 2026-06-26 15:24:24
● 2018-01-03 08:01:06
● 2026-06-26 15:24:24
●NSns7.sentia.net2018-01-03 → 2026-06-26 · 3 obs
○ 2016-07-18 00:53:16
● 2018-01-03 08:01:06
● 2026-06-26 15:24:24
● 2018-01-03 08:01:06
● 2026-06-26 15:24:24
○MXsmtp02.fastxs.net2015-07-22 → 2016-07-18 · 4 obs
● 2015-07-22 05:49:38
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
○MXsmtp03.fastxs.net2015-07-22 → 2016-07-18 · 4 obs
● 2015-07-22 05:49:38
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
○MXsmtp04.fastxs.net2015-07-22 → 2016-07-18 · 4 obs
● 2015-07-22 05:49:38
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
●A213.214.122.172018-01-03 → 2026-06-26 · 3 obs
○ 2016-07-18 00:53:16
● 2018-01-03 08:01:06
● 2026-06-26 15:24:24
● 2018-01-03 08:01:06
● 2026-06-26 15:24:24
○A85.158.165.2412015-07-22 → 2016-07-18 · 4 obs
● 2015-07-22 05:49:38
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
● 2016-07-18 00:53:16
○ 2018-01-03 08:01:06
○ 2026-06-26 15:24:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| nl | ns1.dns.nl, ns3.dns.nl, ns4.dns.nl | - |
| linuxcourse.nl | ns4.sentia.nl, ns5.sentia.nl, ns6.sentia.net, ns7.sentia.net | - |
✅ Authoritative Response
Server:162.251.34.5
NS records: ns4.sentia.nl, ns5.sentia.nl, ns6.sentia.net, ns7.sentia.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for linuxcourse.nl (unsigned zone)
⏱️ Timing
Total: 2725ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 213.214.122.17 |
| NS | 4 | ns5.sentia.nl, ns7.sentia.net... |
| SOA | 1 | ns1.msgc.ac hostmaster.linuxcourse.nl |
Analysis
IP Addresses
linuxcourse.nl resolves to one IP address: 213.214.122.17.
Name Servers
linuxcourse.nl has five name servers, which are ns1.msgc.ac, ns6.sentia.net, ns7.sentia.net and two others.