`duinoordschool.nl`

DNSSEC	🔒 Signed (DS record present)
A	174.129.25.170^{🇺🇸 Amazon174.129.0.0/16 Execution Services}
		PTR	`wwwizer.com`
NS	`ns1.openprovider.nl` ⭐
		A	2400:cb00:2049:1::a29f:1a0a^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	162.159.26.10^{Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns2.openprovider.be`
		A	2400:cb00:2049:1::a29f:1b60^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	162.159.27.96^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns3.openprovider.eu`
		A	2400:cb00:2049:1::a29f:3059^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
		A	162.159.48.89^{Cloudflare162.159.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`duinoordschool-nl.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::4^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00204.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::c^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db9pr02cu00204.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::1^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as9pr07cu00301.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::c^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-as8pr05cu00304.inbound.protection.outlook.com`
		A	52.101.68.0^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db3pr0202cu00100.inbound.protection.outlook.com`
		A	52.101.68.36^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-db5pr02cu00104.inbound.protection.outlook.com`
		A	52.101.73.4^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am0pr83cu00404.inbound.protection.outlook.com`
		A	52.101.73.6^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am6pr04cu00306.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
TXT	`google-site-verification=ft1Z9gw0LGFx36eRzVLnd_1b-8SiMj8MviVOQSGy0V8`
TXT	`apple-domain-verification=IsYFXjzMjv2525jv`
TXT	`MS=ms(0x787878)(0x787878)xx`
SOA	`ns1.openprovider.nl`dns@openprovider.eu 2026-02-03 #1

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-05-12 22:30:01 +0000 (EPOCH 1778625001)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-05-12 #44

WOT: SAFE (60/100)

Same first word

duinoordschool.nl

DNS History

12 records (5 active, 7 former)

○NSns1.maxdns.nl2016-07-11 → 2016-12-11 · 5 obs

○ 2016-02-08 04:04:34
● 2016-07-11 05:22:38
● 2016-12-11 22:31:48
○ 2026-03-24 08:54:06
○ 2026-05-12 23:12:02

●NSns1.openprovider.nl2026-03-24 → 2026-05-12 · 3 obs

○ 2016-12-11 22:31:48
● 2026-03-24 08:54:06
● 2026-05-12 23:12:02

○NSns1.pansa.net2015-09-03 → 2016-02-08 · 4 obs

● 2015-09-03 17:42:06
● 2016-02-08 04:04:34
○ 2016-07-11 05:22:38
○ 2026-05-12 23:12:02

○NSns2.maxdns.nl2016-07-11 → 2016-12-11 · 5 obs

○ 2016-02-08 04:04:34
● 2016-07-11 05:22:38
● 2016-12-11 22:31:48
○ 2026-03-24 08:54:06
○ 2026-05-12 23:12:02

●NSns2.openprovider.be2026-03-24 → 2026-05-12 · 3 obs

○ 2016-12-11 22:31:48
● 2026-03-24 08:54:06
● 2026-05-12 23:12:02

○NSns2.pansa.net2015-09-03 → 2016-02-08 · 4 obs

● 2015-09-03 17:42:06
● 2016-02-08 04:04:34
○ 2016-07-11 05:22:38
○ 2026-05-12 23:12:02

●NSns3.openprovider.eu2026-03-24 → 2026-05-12 · 3 obs

○ 2016-12-11 22:31:48
● 2026-03-24 08:54:06
● 2026-05-12 23:12:02

○NSns3.pansa.net2015-09-03 → 2016-02-08 · 4 obs

● 2015-09-03 17:42:06
● 2016-02-08 04:04:34
○ 2016-07-11 05:22:38
○ 2026-05-12 23:12:02

●MXduinoordschool-nl.mail.protection.outlook.com2015-09-03 → 2026-05-12 · 2 obs

● 2015-09-03 17:42:06
● 2026-05-12 23:12:02

●A174.129.25.1702026-03-24 → 2026-05-12 · 3 obs

○ 2016-12-11 22:31:48
● 2026-03-24 08:54:06
● 2026-05-12 23:12:02

○A37.72.99.1272016-07-11 → 2016-12-11 · 5 obs

○ 2016-02-08 04:04:34
● 2016-07-11 05:22:38
● 2016-12-11 22:31:48
○ 2026-03-24 08:54:06
○ 2026-05-12 23:12:02

○A82.150.141.722015-09-03 → 2016-02-08 · 4 obs

● 2015-09-03 17:42:06
● 2016-02-08 04:04:34
○ 2016-07-11 05:22:38
○ 2026-05-12 23:12:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns1.dns.nl, ns3.dns.nl, ns4.dns.nl	-
duinoordschool.nl	ns2.openprovider.be, ns1.openprovider.nl, ns3.openprovider.eu	-

✅ Authoritative Response

Server:162.159.27.96

NS records: ns2.openprovider.be, ns1.openprovider.nl, ns3.openprovider.eu

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1002ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`174.129.25.170`
NS	3	`ns1.openprovider.nl, ns2.openprovider.be...`
MX	1	`duinoordschool-nl.mail.protection.outloo`
TXT	4	`apple-domain-verification=IsYFXjzMjv2525, MS=ms(0x787878)(0x787878)xx...`
SOA	1	`ns1.openprovider.nl dns.openprovider.eu`

Analysis

IP Addresses

duinoordschool.nl points to an IP address: 174.129.25.170.

other host names include fortresswinery.com, sudi.jp, thecdp.com, laymans-guide.com and klim-opschool.nl; they share IP numbers with duinoordschool.nl.

Name Servers

duinoordschool.nl is delegated to three name servers ns2.openprovider.be, ns3.openprovider.eu and ns1.openprovider.nl.

duinoordschool.nl at least partially shares name servers with other domains, for instance fve.fr, webcamsecrets.nl, coppac.be, mctrsprts.pro and workforge.nl.

Host names with two IP numbers:

ns2.openprovider.be points to 2400:cb00:2049:1::a29f:1b60 and 162.159.27.96; ns3.openprovider.eu points to 2400:cb00:2049:1::a29f:3059 and 162.159.48.89; ns1.openprovider.nl points to 2400:cb00:2049:1::a29f:1a0a and 162.159.26.10.

Mail Servers

duinoordschool.nl is handled by a single mail server, duinoordschool-nl.mail.protection.outlook.com.

Hostname duinoordschool-nl.mail.protection.outlook.com resolves to eight IP numbers: 2a01:111:f403:ca04::4, 2a01:111:f403:ca04::c, 2a01:111:f403:ca09::1, 2a01:111:f403:ca09::c, 52.101.68.0, 52.101.68.36, 52.101.73.4 and 52.101.73.6.

duinoordschool.nl - robtex.com