`studiedatabase.nl`

DNSSEC	⚠️ Not signed
A	2a00:1c98:1000:1113:0:2:571a:8f60^{🇧🇪 COMBELL-AS2a00:1c98::/32 COMBELL Network}
A	83.217.86.156^{🇧🇪 COMBELL-AS83.217.64.0/19 Combell Network}
NS	`ns3.combell.net` ⭐
		A	2a00:1c98::53:1^{🇧🇪 COMBELL-AS2a00:1c98::/32 COMBELL Network}
			PTR	`ns3.combell.net`
		A	83.217.73.172^{🇧🇪 COMBELL-AS83.217.64.0/19 Combell Network}
			PTR	`ns3.combell.net`
NS	`ns1.combell.eu` ⚠️ Not in parent delegation
		A	2a00:1c98:50::50^{🇧🇪 COMBELL-AS2a00:1c98:50::/44}
		A	89.44.166.48^{🇧🇪 COMBELL-AS89.44.166.0/23 Combell Network}
			PTR	`89.44.166.48.static.hosted.by.combell-ops.net`
NS	`ns4.combell.net`
		A	2001:1598:0:101::3^{🇧🇪 EASYHOST-COLO-AS2001:1598::/32 Easyhost Network}
			PTR	`ns4.combell.net`
		A	86.39.202.67^{🇧🇪 EASYHOST-COLO-AS86.39.128.0/17 Easyhost Network}
			PTR	`ns4.combell.net`
MX	`mx.mailprotect.be` ⭐
		A	178.208.39.140^{🇧🇪 COMBELL-AS178.208.32.0/19 COMBELL Network}
			PTR	`mx.mailprotect.be`
		A	178.208.39.141^{🇧🇪 COMBELL-AS178.208.32.0/19 COMBELL Network}
			PTR	`mx.mailprotect.be`
		A	178.208.39.142^{🇧🇪 COMBELL-AS178.208.32.0/19 COMBELL Network}
			PTR	`mx.mailprotect.be`
		A	178.208.39.143^{🇧🇪 COMBELL-AS178.208.32.0/19 COMBELL Network}
			PTR	`mx.mailprotect.be`
MX	`mx.backup.mailprotect.be`⁽⁵⁰⁾
		A	178.208.39.140^{🇧🇪 COMBELL-AS178.208.32.0/19 COMBELL Network}
			PTR	`mx.mailprotect.be`
		A	178.208.39.141^{🇧🇪 COMBELL-AS178.208.32.0/19 COMBELL Network}
			PTR	`mx.mailprotect.be`
		A	178.208.39.142^{🇧🇪 COMBELL-AS178.208.32.0/19 COMBELL Network}
			PTR	`mx.mailprotect.be`
		A	178.208.39.143^{🇧🇪 COMBELL-AS178.208.32.0/19 COMBELL Network}
			PTR	`mx.mailprotect.be`
TXT	`v=spf1 include:spf.byte.nl ?all`
SOA	`ns3.combell.net`hostmaster@studiedatabase.nl serial=1750415032

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-03-30 09:30:01 +0000 (EPOCH 1774863001)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-03-30 #19

Subdomains

www.studiedatabase.nl

Same first word

studiedatabase.nl

DNS History

13 records (7 active, 6 former)

●NSns1.combell.eu2026-02-24 → 2026-03-30 · 3 obs

○ 2019-03-04 08:35:04
● 2026-02-24 02:27:58
● 2026-03-30 10:08:14

●NSns3.combell.net2026-02-24 → 2026-03-30 · 3 obs

○ 2019-03-04 08:35:04
● 2026-02-24 02:27:58
● 2026-03-30 10:08:14

●NSns4.combell.net2026-02-24 → 2026-03-30 · 3 obs

○ 2019-03-04 08:35:04
● 2026-02-24 02:27:58
● 2026-03-30 10:08:14

○NSnsa.byte.nl2019-03-04 → 2019-03-04 · 3 obs

● 2019-03-04 08:35:04
○ 2026-02-24 02:27:58
○ 2026-03-30 10:08:14

○NSnsb.byte.nl2019-03-04 → 2019-03-04 · 3 obs

● 2019-03-04 08:35:04
○ 2026-02-24 02:27:58
○ 2026-03-30 10:08:14

○NSnsc.byte.nl2019-03-04 → 2019-03-04 · 3 obs

● 2019-03-04 08:35:04
○ 2026-02-24 02:27:58
○ 2026-03-30 10:08:14

●MXmx.backup.mailprotect.be2026-02-24 → 2026-03-30 · 3 obs

○ 2019-03-04 08:35:04
● 2026-02-24 02:27:58
● 2026-03-30 10:08:14

●MXmx.mailprotect.be2026-02-24 → 2026-03-30 · 3 obs

○ 2019-03-04 08:35:04
● 2026-02-24 02:27:58
● 2026-03-30 10:08:14

○MXsmtp1.byte.nl2019-03-04 → 2019-03-04 · 3 obs

● 2019-03-04 08:35:04
○ 2026-02-24 02:27:58
○ 2026-03-30 10:08:14

○MXsmtp2.byte.nl2019-03-04 → 2019-03-04 · 3 obs

● 2019-03-04 08:35:04
○ 2026-02-24 02:27:58
○ 2026-03-30 10:08:14

●A2a00:1c98:1000:1113:0:2:571a:8f602026-02-24 → 2026-03-30 · 3 obs

○ 2019-03-04 08:35:04
● 2026-02-24 02:27:58
● 2026-03-30 10:08:14

○A46.21.238.182019-03-04 → 2019-03-04 · 3 obs

● 2019-03-04 08:35:04
○ 2026-02-24 02:27:58
○ 2026-03-30 10:08:14

●A83.217.86.1562026-02-24 → 2026-03-30 · 3 obs

○ 2019-03-04 08:35:04
● 2026-02-24 02:27:58
● 2026-03-30 10:08:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns4.dns.nl, ns1.dns.nl, ns3.dns.nl	-
studiedatabase.nl	ns3.combell.net, ns4.combell.net	-

✅ Authoritative Response

Server:83.217.73.172

NS records: ns3.combell.net, ns4.combell.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for studiedatabase.nl (unsigned zone)

⏱️ Timing

Total: 451ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`83.217.86.156`
AAAA	1	`2a00:1c98:1000:1113:0:2:571a:8f60`
NS	3	`ns4.combell.net, ns3.combell.net...`
MX	2	`mx.mailprotect.be (pri: 10), mx.backup.mailprotect.be (pri: 50)`
TXT	1	`v=spf1 include:spf.byte.nl ?all`
SOA	1	`ns3.combell.net hostmaster.studiedatabas`

Analysis

Hierarchy

The parent of www.studiedatabase.nl is studiedatabase.nl.

IP Addresses

Two IP numbers are pointed to by studiedatabase.nl: 2a00:1c98:1000:1113:0:2:571a:8f60 and 83.217.86.156.

other host names include hodex.eu, 83.217.86.156.static.hosted.by.combell.com, voorlichtingsysteem.nl, www.studiedatabase.nl and schoolvoorlichting.nl; they share IP numbers with studiedatabase.nl.

Name Servers

studiedatabase.nl is delegated to three name servers ns1.combell.eu, ns3.combell.net and ns4.combell.net.

studiedatabase.nl at least partially shares name servers with other domains, for instance everyoneinvested.org, assembleespeakers.com, decubber.be, lucullus.be and kdl.be.

These name servers are commonly used alongside ns3.european-server.com, ns4.european-server.com and ns1.european-server.eu.

Host names with two IP numbers:

ns1.combell.eu points to 2a00:1c98:50::50 and 89.44.166.48; ns3.combell.net points to 2a00:1c98::53:1 and 83.217.73.172; ns4.combell.net points to 2001:1598:0:101::3 and 86.39.202.67.

Mail Servers

studiedatabase.nl is handled by two mail servers: mx.mailprotect.be and mx.backup.mailprotect.be.

studiedatabase.nl uses the same mail server setup as other domains, for instance kaars.nl, prothesia.be, astronomie.be, sportkine.gent and fitbus.be.

studiedatabase.nl shares at least partially some mail servers with other domains, for instance agc-mirodan.be, kantoorlecompte.be, westsign.be, media-expo.be and sinfonietta.be.