`doortec.nl`

DNSSEC	🔒 Signed (DS record present)
A	2a00:1478:200:0:f:1070:0:1^{🇳🇱 GL-IX-AS2a00:1478::/32 Gelderland Internet Exchange}
		PTR	`web140.hostingdiscounter.nl`
A	91.217.57.84^{🇳🇱 GL-IX-AS91.217.57.0/24 Tiscom Hosting route object}
NS	`ns1.tiscomhosting.nl` ⭐
		A	2a00:1478:20:7:8:772:0:1^{🇳🇱 GL-IX-AS2a00:1478::/32 Gelderland Internet Exchange}
			PTR	`ns1.tiscomhosting.nl`
		A	77.95.248.106^{🇳🇱 GL-IX-AS77.95.248.0/21 Gelderland Internet Exchange}
			PTR	`ns1.tiscomhosting.nl`
NS	`ns2.tiscomhosting.net`
		A	2a00:e760:100:7:8:1113:0:1^{🇳🇱 DSTNY-BACKBONE2a00:e760::/32 Reverse delegation for IN-BE}
			PTR	`ns2.tiscomhosting.net`
		A	85.119.243.6^{🇳🇱 DSTNY-BACKBONE85.119.240.0/21 IN BVBA}
			PTR	`ns2.tiscomhosting.net`
NS	`ns3.tiscomhosting.eu`
		A	2a03:7900:105:31:3:105:137:1^{🇳🇱 TUXIS2a03:7900::/32 NL-TUXIS-20110407 J.M. Schouten trading as Tuxis Internet Engineering}
			PTR	`ns3.tiscomhosting.eu`
		A	31.3.105.137^{🇳🇱 TUXIS31.3.104.0/21 NL-TUXIS-20110408 J.M. Schouten trading as Tuxis Internet Engineering}
			PTR	`ns3.tiscomhosting.eu`
MX	`doortec-nl.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:ca04::7^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-db4pr02cu00307.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::a^{🇮🇪 Microsoft2a01:111:f000::/36}
			PTR	`mail-du0pr03cu00102.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::f^{🇳🇱 Microsoft2a01:111:f000::/36}
			PTR	`mail-am7pr05cu00307.inbound.protection.outlook.com`
		A	52.101.68.36^{🇮🇪 Microsoft52.96.0.0/12 MICROSOFT}
		A	52.101.73.4^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am0pr83cu00404.inbound.protection.outlook.com`
		A	52.101.73.12^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-am4pr0401cu00104.inbound.protection.outlook.com`
		A	52.101.73.153^{🇳🇱 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-as8pr05cu00401.inbound.protection.outlook.com`
MX	`fallback1.server.eu`⁽²⁰⁰⁾
		A	2a00:e760:100:0:5:1114:0:1^{🇳🇱 DSTNY-BACKBONE2a00:e760::/32 Reverse delegation for IN-BE}
			PTR	`fallback1.server.eu`
		A	85.119.243.10^{🇳🇱 DSTNY-BACKBONE85.119.240.0/21 IN BVBA}
			PTR	`fallback1.server.eu`
TXT	`MS=ms55706020`
TXT	`v=spf1 a mx a:mailout08.hostingdiscounter.nl a:mailout11.hostingdiscounter.nl...`
SOA	`ns1.tiscomhosting.nl`hostmaster@tiscomhosting.nl 2023-02-28 #16

`nl`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns1.dns.nl` ⭐
	NS	`ns3.dns.nl`
	NS	`ns4.dns.nl`
	TXT	`nl zone update: 2026-07-28 17:30:01 +0000 (EPOCH 1785259801)`
	SOA	`ns1.dns.nl`dns@sidn.nl 2026-07-28 #35

Same first word

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doortec.com

doortec.co.il

doortec.co.jp

doortec.ae

doortec.in

doortec.dk

doortec.com.au

doortec.ru

doortec.cn

doortec.ie

doortec.de

doortec.co.za

doortec.nl

doortec.pl

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cotedor.dk

edoctor.cn

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doctero.com

cotedor.nl

edoctor.hu

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decorto.com

edoctor.uz

rodotec.com

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otcoder.de

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rotcode.com

edoctor.lt

doorect.com

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edoctor.co.kr

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otcoder.com

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cotedor.ca

doctore.mx

rodotec.com.br

edoctor.fr

cotedor.es

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edoctor.dev

cotedor.net

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edoctor.us

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redcoto.com.ar

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tecdoor.com

edoctor.mn

ordotec.com

dotcore.co.il

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decorto.pl

edoctor.es

DNS History

9 records (7 active, 2 former)

●NSns1.tiscomhosting.nl2015-08-13 → 2026-07-28 · 2 obs

● 2015-08-13 01:51:04
● 2026-07-28 17:58:54

●NSns2.tiscomhosting.net2015-08-13 → 2026-07-28 · 2 obs

● 2015-08-13 01:51:04
● 2026-07-28 17:58:54

●NSns3.tiscomhosting.eu2015-08-13 → 2026-07-28 · 2 obs

● 2015-08-13 01:51:04
● 2026-07-28 17:58:54

●MXdoortec-nl.mail.protection.outlook.com2020-02-20 → 2026-07-28 · 8 obs

○ 2017-03-13 11:06:08
● 2020-02-20 14:20:08
● 2026-06-12 15:07:14
○ 2026-06-19 01:05:16
● 2026-06-26 10:20:14
○ 2026-07-15 01:18:46
● 2026-07-23 04:32:50
● 2026-07-28 17:58:54

●MXfallback1.server.eu2015-08-13 → 2026-07-28 · 10 obs

● 2015-08-13 01:51:04
● 2017-03-13 11:06:08
○ 2020-02-20 14:20:08
● 2026-06-11 10:12:36
● 2026-06-12 15:07:14
○ 2026-06-19 01:05:16
● 2026-06-26 10:20:14
○ 2026-07-15 01:18:46
● 2026-07-23 04:32:50
● 2026-07-28 17:58:54

○MXfallback2.server.eu2015-08-13 → 2017-03-13 · 4 obs

● 2015-08-13 01:51:04
● 2017-03-13 11:06:08
○ 2020-02-20 14:20:08
○ 2026-07-28 17:58:54

○MXmx15.hostingdiscounter.nl2015-08-13 → 2017-03-13 · 4 obs

● 2015-08-13 01:51:04
● 2017-03-13 11:06:08
○ 2020-02-20 14:20:08
○ 2026-07-28 17:58:54

●A2a00:1478:200:0:f:1070:0:12015-08-13 → 2026-07-28 · 7 obs

● 2015-08-13 01:51:04
● 2026-06-12 15:07:14
○ 2026-06-19 01:05:16
● 2026-06-26 10:20:14
○ 2026-07-15 01:18:46
● 2026-07-23 04:32:50
● 2026-07-28 17:58:54

●A91.217.57.842015-08-13 → 2026-07-28 · 7 obs

● 2015-08-13 01:51:04
● 2026-06-12 15:07:14
○ 2026-06-19 01:05:16
● 2026-06-26 10:20:14
○ 2026-07-15 01:18:46
● 2026-07-23 04:32:50
● 2026-07-28 17:58:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
nl	ns1.dns.nl, ns3.dns.nl, ns4.dns.nl	-
doortec.nl	ns1.tiscomhosting.nl, ns2.tiscomhosting.net, ns3.tiscomhosting.eu	2 records

✅ Authoritative Response

Server:85.119.243.6

NS records: ns1.tiscomhosting.nl, ns2.tiscomhosting.net, ns3.tiscomhosting.eu

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1184ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`91.217.57.84`
AAAA	1	`2a00:1478:200:0:f:1070:0:1`
NS	3	`ns1.tiscomhosting.nl, ns3.tiscomhosting.eu...`
MX	2	`fallback1.server.eu (pri: 200), doortec-nl.mail.protection.outlook.com (`
TXT	2	`MS=ms55706020, v=spf1 a mx a:mailout08.hostingdiscounte`
SOA	1	`ns1.tiscomhosting.nl hostmaster.tiscomho`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.tiscomhosting.nl, ns1.tiscomhosting.nl)

Analysis

IP Addresses

doortec.nl points to the IP addresses 91.217.57.84 and 2a00:1478:200:0:f:1070:0:1

simracers.nl, web140.hostingdiscounter.nl, dekantoorwinkel.com and two other host names share IP numbers with doortec.nl.

Name Servers

The authoritative name servers for doortec.nl are ns3.tiscomhosting.eu, ns2.tiscomhosting.net and ns1.tiscomhosting.nl — three in total.

The name servers of doortec.nl overlap at least partially with those of other domains — among them care4eyes.nl, loof.info, bicoach.nl and two more.

ns3.tiscomhosting.eu, ns2.tiscomhosting.net and ns1.tiscomhosting.nl all resolve to exactly two IP numbers apiece: ns3.tiscomhosting.eu → 31.3.105.137 and 2a03:7900:105:31:3:105:137:1; ns2.tiscomhosting.net → 85.119.243.6 and 2a00:e760:100:7:8:1113:0:1; ns1.tiscomhosting.nl → 77.95.248.106 and 2a00:1478:20:7:8:772:0:1.

Mail Servers

Mail for doortec.nl is handled by two mail servers — fallback1.server.eu and doortec-nl.mail.protection.outlook.com.

doortec.nl has at least partial mail server overlap with other domains such as landschapinbeeld.be, kmm.be, kso.be and two more.

These mail servers commonly co-occur with mail servers fallback2.server.eu, cluster2.server.eu, mx18.internl.net and 7 others.

Hostnames that resolve to 8 IP addresses:

Hostname doortec-nl.mail.protection.outlook.com directs to 52.101.68.36, 52.101.73.4 and 52.101.73.12 along with 5 other IP addresses.

Hostnames that resolve to two IP addresses:

fallback1.server.eu directs traffic to 85.119.243.10 and 2a00:e760:100:0:5:1114:0:1.

doortec.nl - robtex.com

doortec.nl

nl

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

Name Servers

Mail Servers

`doortec.nl`

`nl`