instructors.nl - robtex.com
instructors.nl
nl
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns1.dns.nl ⭐ | ||||||
| NS | ns3.dns.nl | ||||||
| NS | ns4.dns.nl | ||||||
| TXT | nl zone update: 2026-07-03 16:30:01 +0000 (EPOCH 1783096201) | ||||||
| SOA | ns1.dns.nldns@sidn.nl 2026-07-03 #33 | ||||||
Same first word
Similar names
DNS History
10 records (6 active, 4 former)
●NSns1.dovendi.nl2026-06-10 → 2026-07-03 · 3 obs
● 2026-06-10 03:23:44
● 2026-07-03 17:03:06
○NSns1.sonexo.eu2015-07-11 → 2017-02-08 · 4 obs
● 2017-02-08 02:53:58
○ 2026-06-10 03:23:44
○ 2026-07-03 17:03:06
●NSns2.dovendi.eu2026-06-10 → 2026-07-03 · 3 obs
● 2026-06-10 03:23:44
● 2026-07-03 17:03:06
○NSns2.sonexo.com2015-07-11 → 2017-02-08 · 4 obs
● 2017-02-08 02:53:58
○ 2026-06-10 03:23:44
○ 2026-07-03 17:03:06
●NSns3.dovendi.eu2026-06-10 → 2026-07-03 · 3 obs
● 2026-06-10 03:23:44
● 2026-07-03 17:03:06
●MXmailx.xnsregistrar.com2026-06-10 → 2026-07-03 · 2 obs
● 2026-07-03 17:03:06
●A2a01:4f8:c014:b2d8::12026-06-10 → 2026-07-03 · 3 obs
● 2026-06-10 03:23:44
● 2026-07-03 17:03:06
○A37.97.135.1292015-11-15 → 2017-02-08 · 5 obs
● 2015-11-15 04:04:16
● 2017-02-08 02:53:58
○ 2026-06-10 03:23:44
○ 2026-07-03 17:03:06
●A88.198.116.1212026-06-10 → 2026-07-03 · 3 obs
● 2026-06-10 03:23:44
● 2026-07-03 17:03:06
○A93.180.66.1112015-07-11 → 2015-07-11 · 3 obs
○ 2015-11-15 04:04:16
○ 2026-07-03 17:03:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| nl | ns1.dns.nl, ns3.dns.nl, ns4.dns.nl | - |
| instructors.nl | ns1.dovendi.nl, ns2.dovendi.eu, ns3.dovendi.eu | - |
✅ Authoritative Response
Server:95.168.166.87
NS records: ns1.dovendi.nl, ns2.dovendi.eu, ns3.dovendi.eu
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 3527ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 88.198.116.121 |
| AAAA | 1 | 2a01:4f8:c014:b2d8::1 |
| NS | 3 | ns1.dovendi.nl, ns3.dovendi.eu... |
| MX | 1 | mailx.xnsregistrar.com (pri: 0) |
| TXT | 4 | dan-ownership-verification=2de7dbe2, afternic-verification-8jDbcERHhqPtecPbFc... |
| SOA | 1 | ns1.dovendi.nl info.dovendi.com |
Analysis
IP Addresses
instructors.nl has two IP addresses: 88.198.116.121 and 2a01:4f8:c014:b2d8::1
fridman.nl, yns.be, degymzaal.nl and two other host names share IP numbers with instructors.nl.
Name Servers
instructors.nl is delegated to three name servers: ns2.dovendi.eu, ns3.dovendi.eu and ns1.dovendi.nl.
At least some of instructors.nl's name servers are shared with other domains, for example cruiseaanbiedingen.nl, lengelle.fr, onecore.nl and two more.
ns2.dovendi.eu, ns3.dovendi.eu and ns1.dovendi.nl each resolve to two IP addresses: ns2.dovendi.eu resolves to 212.8.252.63 and 2a00:7c80:0:26e::2; ns3.dovendi.eu resolves to 91.107.180.97 and 2a01:4f8:1c17:f65d::2; ns1.dovendi.nl resolves to 95.168.166.87 and 2001:1af8:5000:a01f:6::2.
Mail Servers
Mail for instructors.nl is handled by a single mail server, mailx.xnsregistrar.com.
instructors.nl uses an identical mail server configuration to several other domains — among them gritty.nl, efad.nl, beetmelders.nl and two more.
mailx.xnsregistrar.com directs to two IP numbers, 78.141.221.48 and 2001:19f0:5001:20b9:5400:2ff:fe41:7810.