`knowledgesystems.nl`

DNSSEC	🔒 Signed (DS record present)
A	2a01:4f8:c014:b2d8::1^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
		PTR	`static.88-198-116-121.clients.your-server.de`
A	88.198.116.121^{🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4}
NS	`ns1.dovendi.nl` ⭐
		A	2001:1af8:5000:a01f:6::2^{🇳🇱 LEASEWEB-NL-AMS-012001:1af8::/32 NL-LEASEWEB-20040408 Leaseweb}
			PTR	`ns1.dovendi.nl`
		A	95.168.166.87^{🇳🇱 LEASEWEB-NL-AMS-0195.168.160.0/20}
			PTR	`ns1.dovendi.nl`
NS	`ns2.dovendi.eu`
		A	2a00:7c80:0:26e::2^{🇳🇱 WORLDSTREAM-12a00:7c80::/32 WorldStream IPv6}
			PTR	`ns2.dovendi.eu`
		A	212.8.252.63^{🇳🇱 WORLDSTREAM-1212.8.252.0/23}
			PTR	`ns2.dovendi.eu`
NS	`ns3.dovendi.eu`
		A	2a01:4f8:1c17:f65d::2^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`ns3.dovendi.eu`
		A	91.107.180.97^{🇩🇪 Hetzner91.107.128.0/17 HETZNER-DC}
			PTR	`ns3.dovendi.eu`
MX	`mailx.xnsregistrar.com` ⭐
		A	2001:19f0:5001:20b9:5400:2ff:fe41:7810^{🇳🇱 AS-VULTR2001:19f0:5000::/38 Vultr Assigned Prefix}
			PTR	`mailx.xnsregistrar.com`
		A	78.141.221.48^{🇳🇱 AS-VULTR78.141.208.0/20 Vultr Assigned Prefix}
			PTR	`mailx.xnsregistrar.com`
TXT	`c604ce15b99eb0dfb8d78cf6ae04008d34e61ed6`
TXT	`afternic-verification-8jDbcERHhqPtecPbFcqVib`
TXT	`dan-ownership-verification=2de7dbe2`
TXT	`v=spf1 -all`
SOA	`ns1.dovendi.nl`info@dovendi.com 2026-02-15 #2

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-03-31 05:30:02 +0000 (EPOCH 1774935002)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-03-31 #11

Same first word

knowledgesystems.org

knowledgesystems.info

knowledgesystems.com.au

knowledgesystems.nl

DNS History

22 records (6 active, 16 former)

○NSns.bnamed.be2015-07-12 → 2016-12-20 · 3 obs

● 2015-07-12 03:23:34
● 2016-12-20 15:57:20
○ 2026-03-31 06:01:18

○NSns.bnamed.eu2015-07-12 → 2016-12-20 · 3 obs

● 2015-07-12 03:23:34
● 2016-12-20 15:57:20
○ 2026-03-31 06:01:18

○NSns.bnamed.nl2015-07-12 → 2016-12-20 · 3 obs

● 2015-07-12 03:23:34
● 2016-12-20 15:57:20
○ 2026-03-31 06:01:18

○NSns.bnamed.uk2015-07-12 → 2016-12-20 · 3 obs

● 2015-07-12 03:23:34
● 2016-12-20 15:57:20
○ 2026-03-31 06:01:18

○NSns.bnamed.us2015-07-12 → 2016-12-20 · 3 obs

● 2015-07-12 03:23:34
● 2016-12-20 15:57:20
○ 2026-03-31 06:01:18

●NSns1.dovendi.nl2026-03-31 → 2026-03-31 · 2 obs

○ 2016-12-20 15:57:20
● 2026-03-31 06:01:18

●NSns2.dovendi.eu2026-03-31 → 2026-03-31 · 2 obs

○ 2016-12-20 15:57:20
● 2026-03-31 06:01:18

●NSns3.dovendi.eu2026-03-31 → 2026-03-31 · 2 obs

○ 2016-12-20 15:57:20
● 2026-03-31 06:01:18

○MXalt1.aspmx.l.google.com2015-07-12 → 2016-12-20 · 3 obs

● 2015-07-12 03:23:34
● 2016-12-20 15:57:20
○ 2026-03-31 06:01:18

○MXalt2.aspmx.l.google.com2015-07-12 → 2016-12-20 · 3 obs

● 2015-07-12 03:23:34
● 2016-12-20 15:57:20
○ 2026-03-31 06:01:18

○MXaspmx.l.google.com2015-07-12 → 2016-12-20 · 3 obs

● 2015-07-12 03:23:34
● 2016-12-20 15:57:20
○ 2026-03-31 06:01:18

○MXaspmx2.googlemail.com2015-07-12 → 2016-12-20 · 3 obs

● 2015-07-12 03:23:34
● 2016-12-20 15:57:20
○ 2026-03-31 06:01:18

○MXaspmx3.googlemail.com2015-07-12 → 2016-12-20 · 3 obs

● 2015-07-12 03:23:34
● 2016-12-20 15:57:20
○ 2026-03-31 06:01:18

○MXaspmx4.googlemail.com2015-07-12 → 2016-12-20 · 3 obs

● 2015-07-12 03:23:34
● 2016-12-20 15:57:20
○ 2026-03-31 06:01:18

○MXaspmx5.googlemail.com2015-07-12 → 2016-12-20 · 3 obs

● 2015-07-12 03:23:34
● 2016-12-20 15:57:20
○ 2026-03-31 06:01:18

●MXmailx.xnsregistrar.com2026-03-31 → 2026-03-31 · 2 obs

○ 2016-12-20 15:57:20
● 2026-03-31 06:01:18

○A128.140.120.792026-03-31 → 2026-03-31 · 1 obs

○ 2026-03-31 06:01:18

○A2a01:4f8:c013:b062::12026-03-31 → 2026-03-31 · 1 obs

○ 2026-03-31 06:01:18

●A2a01:4f8:c014:b2d8::12026-03-31 → 2026-03-31 · 2 obs

○ 2016-12-20 15:57:20
● 2026-03-31 06:01:18

○A37.34.50.1312015-07-12 → 2016-01-25 · 4 obs

● 2015-07-12 03:23:34
● 2016-01-25 16:37:56
○ 2016-04-20 12:07:26
○ 2026-03-31 06:01:18

○A77.81.245.1442016-04-20 → 2016-12-20 · 4 obs

○ 2016-01-25 16:37:56
● 2016-04-20 12:07:26
● 2016-12-20 15:57:20
○ 2026-03-31 06:01:18

●A88.198.116.1212026-03-31 → 2026-03-31 · 2 obs

○ 2016-12-20 15:57:20
● 2026-03-31 06:01:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns1.dns.nl, ns3.dns.nl, ns4.dns.nl	-
knowledgesystems.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: 1074ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`88.198.116.121`
AAAA	1	`2a01:4f8:c014:b2d8::1`
NS	3	`ns3.dovendi.eu, ns2.dovendi.eu...`
MX	1	`mailx.xnsregistrar.com (pri: 0)`
TXT	4	`c604ce15b99eb0dfb8d78cf6ae04008d34e61ed6, afternic-verification-8jDbcERHhqPtecPbFc...`
SOA	1	`ns1.dovendi.nl info.dovendi.com`

Analysis

IP Addresses

knowledgesystems.nl resolves to two IP numbers: 2a01:4f8:c014:b2d8::1 and 88.198.116.121.

other host names including leloft.be, rauscher.fr, charging.nl, sixte.fr and tourexcel.fr share IP numbers with knowledgesystems.nl.

Name Servers

knowledgesystems.nl is delegated to three name servers ns2.dovendi.eu, ns3.dovendi.eu and ns1.dovendi.nl.

knowledgesystems.nl at least partially shares name servers with other domains, for instance principals.nl, naviga.nl, cutlery.nl, bigli.nl and phiten.fr.

these name servers are commonly used alongside ns1.sonexo.eu.

Host names with two IP numbers:

ns2.dovendi.eu points to: 2a00:7c80:0:26e::2 and 212.8.252.63.

ns3.dovendi.eu points to: 2a01:4f8:1c17:f65d::2 and 91.107.180.97.

ns1.dovendi.nl points to: 2001:1af8:5000:a01f:6::2 and 95.168.166.87.

Mail Servers

knowledgesystems.nl is handled by a single mail server, mailx.xnsregistrar.com.

knowledgesystems.nl shares the same mail server setup as other domains, for instance sa3.nl, palencia.nl, het-hofje.nl, xbmc.nl and rdrd.nl.

mailx.xnsregistrar.com resolves to two IP numbers: 2001:19f0:5001:20b9:5400:2ff:fe41:7810 and 78.141.221.48.

knowledgesystems.nl - robtex.com