schoolboek.nl - robtex.com
schoolboek.nl
nl
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns1.dns.nl ⭐ | ||||||
| NS | ns3.dns.nl | ||||||
| NS | ns4.dns.nl | ||||||
| TXT | nl zone update: 2026-04-23 22:30:01 +0000 (EPOCH 1776983401) | ||||||
| SOA | ns1.dns.nldns@sidn.nl 2026-04-23 #45 | ||||||
Subdomains
mx.schoolboek.nl |
Same first word
schoolboek.nl |
Similar names
DNS History
13 records (4 active, 9 former)
○NSns0.leaseweb.nl2015-05-29 → 2015-12-27 · 4 obs
● 2015-12-27 06:10:58
○ 2016-03-24 20:29:54
○ 2026-04-23 23:05:30
●NSns01.hostnet.nl2026-02-16 → 2026-04-23 · 3 obs
● 2026-02-16 10:30:00
● 2026-04-23 23:05:30
●NSns02.hostnet.nl2026-02-16 → 2026-04-23 · 3 obs
● 2026-02-16 10:30:00
● 2026-04-23 23:05:30
○NSns1.hostnet.nl2016-03-24 → 2017-04-01 · 5 obs
● 2016-03-24 20:29:54
● 2017-04-01 14:31:36
○ 2026-02-16 10:30:00
○ 2026-04-23 23:05:30
○NSns1.leaseweb.nl2015-05-29 → 2015-12-27 · 4 obs
● 2015-12-27 06:10:58
○ 2016-03-24 20:29:54
○ 2026-04-23 23:05:30
○NSns2.hostnetbv.com2016-03-24 → 2017-04-01 · 5 obs
● 2016-03-24 20:29:54
● 2017-04-01 14:31:36
○ 2026-02-16 10:30:00
○ 2026-04-23 23:05:30
○NSns3.hostnetbv.nl2016-03-24 → 2017-04-01 · 5 obs
● 2016-03-24 20:29:54
● 2017-04-01 14:31:36
○ 2026-02-16 10:30:00
○ 2026-04-23 23:05:30
○NSns4.leaseweb.net2015-05-29 → 2015-12-27 · 4 obs
● 2015-12-27 06:10:58
○ 2016-03-24 20:29:54
○ 2026-04-23 23:05:30
○NSns5.leaseweb.nl2015-05-29 → 2015-12-27 · 4 obs
● 2015-12-27 06:10:58
○ 2016-03-24 20:29:54
○ 2026-04-23 23:05:30
○MXmx.schoolboek.nl2016-03-24 → 2017-04-01 · 4 obs
● 2017-04-01 14:31:36
○ 2026-02-16 10:30:00
○ 2026-04-23 23:05:30
●MXschoolboek-nl.mail.protection.outlook.com2026-02-16 → 2026-04-23 · 3 obs
● 2026-02-16 10:30:00
● 2026-04-23 23:05:30
●A37.230.103.72026-02-16 → 2026-04-23 · 3 obs
● 2026-02-16 10:30:00
● 2026-04-23 23:05:30
○A95.211.14.2192015-05-29 → 2017-04-01 · 4 obs
● 2017-04-01 14:31:36
○ 2026-02-16 10:30:00
○ 2026-04-23 23:05:30
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| nl | ns1.dns.nl, ns3.dns.nl, ns4.dns.nl | - |
| schoolboek.nl | ns01.hostnet.nl, ns02.hostnet.nl | - |
✅ Authoritative Response
Server:195.206.121.13
NS records: ns01.hostnet.nl, ns02.hostnet.nl
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 918ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.230.103.7 |
| NS | 2 | ns02.hostnet.nl, ns01.hostnet.nl |
| MX | 1 | schoolboek-nl.mail.protection.outlook.co |
| TXT | 3 | v=spf1 a mx ip4:87.233.198.103/26 ip4:19, MS=ms19641123... |
| SOA | 1 | ns01.hostnet.nl hostmaster.hostnet.nl |
Analysis
Hierarchy
The parent of mx.schoolboek.nl is schoolboek.nl.
IP Addresses
schoolboek.nl points to a single IP address: 37.230.103.7.
Other host names such as mail.thedancingstars.nl, hansheijnen.com, kamhosting.nl, humanitasfinancielehulpverlening.nl and mail.telkinler.com share IPs with schoolboek.nl.
Name Servers
Two name servers ns01.hostnet.nl and ns02.hostnet.nl handle the delegation for schoolboek.nl.
schoolboek.nl shares the same name server setup as other domains, for example barcrew.nl, flex-projects.nl, hagers.eu, softys.de and maxxinno.com.
Host names with two IP numbers:
ns01.hostnet.nl points to 2001:67c:28cc::13 and 195.206.121.13.
ns02.hostnet.nl points to 2001:67c:3c0::13 and 185.10.11.13.
Mail Servers
The schoolboek-nl.mail.protection.outlook.com mail server handles schoolboek.nl.
schoolboek-nl.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::4, 2a01:111:f403:ca04::d, 2a01:111:f403:ca09::3, 2a01:111:f403:ca09::f, 52.101.68.0, 52.101.68.12, 52.101.68.32 and 52.101.73.1.