offcourse.nl - dns.ninja

`offcourse.nl`

DNSSEC	⚠️ Not signed
A	2a0f:e382::60^{🇳🇱 BITENCY-AS2a0f:e382::/32}
		PTR	`ipv6.hosted.by.bitency.net`
A	45.84.218.60^{🇳🇱 BITENCY-AS45.84.218.0/24}
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`
		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	`offcourse-nl.q-v1.mx.microsoft` ⭐
		A	2a01:111:f403:ca04::b^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-dbbpr03cu00103.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::e^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db8pr02cu00106.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am3pr04cu00500.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::5^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am1pr04cu00105.inbound.protection.outlook.com`
		A	52.101.68.10^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dbbpr03cu00102.inbound.protection.outlook.com`
		A	52.101.73.12^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am4pr0401cu00104.inbound.protection.outlook.com`
		A	52.101.73.15^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am9pr04cu00107.inbound.protection.outlook.com`
		A	52.101.73.153^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as8pr05cu00401.inbound.protection.outlook.com`
TXT	`v=spf1 a:w217c2.wpserver.pro include:spf.eu.exclaimer.net include:_spf.zivver...`
SOA	`ns3.combell.net`hostmaster@offcourse.nl serial=1780041139

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-07-11 05:30:01 +0000 (EPOCH 1783747801)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-07-11 #11

WOT: SAFE (68/100)

Subdomains

www.offcourse.nl

Same first word

offcourse.com

offcourse.ca

offcourse.de

offcourse.jp

offcourse.in

offcourse.co

offcourse.net

offcourse.nl

offcourse.org

offcourse.golf

offcourse.com.tr

offcourse.io

offcourse.dk

offcourse.bike

offcourse.se

offcourse.no

offcourse.biz

offcourse.be

Similar names

freofocus.com

courseoff.com

freofocus.com.au

forefocus.com

offsource.com

DNS History

19 records (6 active, 13 former)

○NSns1.ams12.siteground.eu2015-08-07 → 2015-12-05 · 4 obs

● 2015-08-07 19:07:16
● 2015-12-05 06:31:54
○ 2016-03-02 16:42:18
○ 2026-07-11 06:07:36

○NSns1.anony.nl2016-03-02 → 2017-04-19 · 6 obs

○ 2015-12-05 06:31:54
● 2016-03-02 16:42:18
○ 2016-08-11 21:58:46
● 2017-04-19 09:49:00
○ 2026-02-20 03:11:44
○ 2026-07-11 06:07:36

●NSns1.combell.eu2026-02-20 → 2026-07-11 · 3 obs

○ 2017-04-19 09:49:00
● 2026-02-20 03:11:44
● 2026-07-11 06:07:36

○NSns1.flexwebhosting.nl2016-08-11 → 2017-04-19 · 5 obs

○ 2016-03-02 16:42:18
● 2016-08-11 21:58:46
● 2017-04-19 09:49:00
○ 2026-02-20 03:11:44
○ 2026-07-11 06:07:36

○NSns2.ams12.siteground.eu2015-08-07 → 2015-12-05 · 4 obs

● 2015-08-07 19:07:16
● 2015-12-05 06:31:54
○ 2016-03-02 16:42:18
○ 2026-07-11 06:07:36

○NSns2.anony.nl2016-03-02 → 2017-04-19 · 5 obs

○ 2015-12-05 06:31:54
● 2016-03-02 16:42:18
● 2017-04-19 09:49:00
○ 2026-02-20 03:11:44
○ 2026-07-11 06:07:36

○NSns3.anony.eu2016-03-02 → 2017-04-19 · 5 obs

○ 2015-12-05 06:31:54
● 2016-03-02 16:42:18
● 2017-04-19 09:49:00
○ 2026-02-20 03:11:44
○ 2026-07-11 06:07:36

●NSns3.combell.net2026-02-20 → 2026-07-11 · 3 obs

○ 2017-04-19 09:49:00
● 2026-02-20 03:11:44
● 2026-07-11 06:07:36

●NSns4.combell.net2026-02-20 → 2026-07-11 · 3 obs

○ 2017-04-19 09:49:00
● 2026-02-20 03:11:44
● 2026-07-11 06:07:36

○MXmail.offcourse.nl2016-03-02 → 2017-04-19 · 5 obs

○ 2015-12-05 06:31:54
● 2016-03-02 16:42:18
● 2017-04-19 09:49:00
○ 2026-02-20 03:11:44
○ 2026-07-11 06:07:36

○MXmx.backup.mailprotect.be2026-02-20 → 2026-04-15 · 5 obs

○ 2017-04-19 09:49:00
● 2026-02-20 03:11:44
● 2026-04-15 22:04:50
○ 2026-04-26 16:28:56
○ 2026-07-11 06:07:36

○MXmx.mailprotect.be2026-02-20 → 2026-04-15 · 5 obs

○ 2017-04-19 09:49:00
● 2026-02-20 03:11:44
● 2026-04-15 22:04:50
○ 2026-04-26 16:28:56
○ 2026-07-11 06:07:36

○MXoffcourse-nl.mail.protection.outlook.com2015-08-07 → 2015-12-05 · 4 obs

● 2015-08-07 19:07:16
● 2015-12-05 06:31:54
○ 2016-03-02 16:42:18
○ 2026-07-11 06:07:36

●MXoffcourse-nl.q-v1.mx.microsoft2026-02-20 → 2026-07-11 · 3 obs

○ 2017-04-19 09:49:00
● 2026-02-20 03:11:44
● 2026-07-11 06:07:36

○A128.140.220.2362016-03-02 → 2016-03-02 · 4 obs

○ 2015-12-05 06:31:54
● 2016-03-02 16:42:18
○ 2016-08-11 21:58:46
○ 2026-07-11 06:07:36

○A181.224.135.232015-08-07 → 2015-12-05 · 4 obs

● 2015-08-07 19:07:16
● 2015-12-05 06:31:54
○ 2016-03-02 16:42:18
○ 2026-07-11 06:07:36

○A185.27.141.1342016-08-11 → 2017-04-19 · 5 obs

○ 2016-03-02 16:42:18
● 2016-08-11 21:58:46
● 2017-04-19 09:49:00
○ 2026-02-20 03:11:44
○ 2026-07-11 06:07:36

●A2a0f:e382::602026-02-20 → 2026-07-11 · 3 obs

○ 2017-04-19 09:49:00
● 2026-02-20 03:11:44
● 2026-07-11 06:07:36

●A45.84.218.602026-02-20 → 2026-07-11 · 3 obs

○ 2017-04-19 09:49:00
● 2026-02-20 03:11:44
● 2026-07-11 06:07:36

🔍 DNS Trace

📋 Delegation Chain

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

✅ Authoritative Response

Server:89.44.166.48

NS records: ns1.combell.eu, ns3.combell.net, ns4.combell.net

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 2122ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`45.84.218.60`
AAAA	1	`2a0f:e382::60`
NS	3	`ns3.combell.net, ns1.combell.eu...`
MX	1	`offcourse-nl.q-v1.mx.microsoft (pri: 0)`
TXT	1	`v=spf1 a:w217c2.wpserver.pro include:spf`
SOA	1	`ns3.combell.net hostmaster.offcourse.nl`

Analysis

Hierarchy

offcourse.nl is a parent domain of www.offcourse.nl.

IP Addresses

offcourse.nl resolves to the IP addresses 45.84.218.60 and 2a0f:e382::60

Additional host names — www.paradigma.nl, paradigma.be, newdays.nl and two others — share IP numbers with offcourse.nl.

Name Servers

The authoritative name servers for offcourse.nl are ns1.combell.eu, ns3.combell.net and ns4.combell.net — three in total.

offcourse.nl shares at least some of its name servers with other domains, including vvnt.be, ecac.be, maastro.info and two others.

These name servers are frequently seen alongside ns3.european-server.com, ns4.european-server.com, ns1.european-server.eu and 3 other name servers.

ns1.combell.eu, ns3.combell.net and ns4.combell.net all resolve to exactly two IP numbers apiece: ns1.combell.eu → 89.44.166.48 and 2a00:1c98:50::50; ns3.combell.net → 83.217.73.172 and 2a00:1c98::53:1; ns4.combell.net → 86.39.202.67 and 2001:1598:0:101::3.

Mail Servers

offcourse.nl has one mail server: offcourse-nl.q-v1.mx.microsoft.

offcourse-nl.q-v1.mx.microsoft points to 8 IP numbers: 52.101.68.10, 52.101.73.12, 52.101.73.15 and 5 other.