koers.com - robtex.com

koers.com

DNSSEC⚠️ Not signed
A52.18.136.112🇮🇪 Amazon
PTRec2-52-18-136-112.eu-west-1.compute.amazonaws.com
NSns5.itsynergy.nl ⭐
A2a00:1bd0:0:107::5bc0:24d0🇳🇱 CJ2-AS
PTRda02.itsynergy.nl
A91.192.36.208🇳🇱 CJ2-AS
PTRda02.itsynergy.nl
NSns6.itsynergy.nl
A2a00:1bd0:0:107::5bc0:24d1🇳🇱 CJ2-AS
PTRda02.itsynergy.nl
A91.192.36.209🇳🇱 CJ2-AS
PTRda02.itsynergy.nl
MXkoers-com.mail.protection.outlook.com ⭐
TXTv=spf1 a mx ip4:91.192.36.208 ip6:2a00:1bd0:0:107:0:0:5bc0:24d0 include:spf.p...
TXTapple-domain-verification=kdjUCV4GZtqDaewP
TXTMS=ms29987846
TXTd365mktkey=1ycuyneev29i9412as5jvxmd5
SOAns5.itsynergy.nlhostmaster@koers.com 2025-09-04 #5

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1771291435

Up

dmz.koers.com
kantoor.koers.com

Same first word

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koers.cc
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koers.cafe

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DNS History

13 records (4 active, 9 former)

2008201020122014201620182020202220242026NSns5.itsynergy.nlns6.itsynergy.nlns0.leaseweb.nlns1.leaseweb.nlns3.itsynergy.nlns4.itsynergy.nlns4.leaseweb.netns5.leaseweb.nlMXkoers-com.mail.protection.outlook.commail.koers.comA52.18.136.11283.149.77.16891.190.98.70
○NSns0.leaseweb.nl2015-08-23 → 2016-10-17 · 5 obs
○ 2007-10-23 07:23:32
● 2015-08-23 09:36:24
● 2016-10-17 13:27:50
○ 2017-01-08 18:06:24
○ 2026-02-22 17:30:58
○NSns1.leaseweb.nl2007-10-23 → 2016-10-17 · 4 obs
● 2007-10-23 07:23:32
● 2016-10-17 13:27:50
○ 2017-01-08 18:06:24
○ 2026-02-22 17:30:58
○NSns3.itsynergy.nl2017-01-08 → 2018-09-04 · 5 obs
○ 2016-10-17 13:27:50
● 2017-01-08 18:06:24
● 2018-09-04 17:29:22
○ 2026-02-22 13:53:48
○ 2026-02-22 17:30:58
○NSns4.itsynergy.nl2017-01-08 → 2018-09-04 · 5 obs
○ 2016-10-17 13:27:50
● 2017-01-08 18:06:24
● 2018-09-04 17:29:22
○ 2026-02-22 13:53:48
○ 2026-02-22 17:30:58
○NSns4.leaseweb.net2007-10-23 → 2016-10-17 · 4 obs
● 2007-10-23 07:23:32
● 2016-10-17 13:27:50
○ 2017-01-08 18:06:24
○ 2026-02-22 17:30:58
●NSns5.itsynergy.nl2026-02-22 → 2026-02-22 · 3 obs
○ 2018-09-04 17:29:22
● 2026-02-22 13:53:48
● 2026-02-22 17:30:58
○NSns5.leaseweb.nl2007-10-23 → 2016-10-17 · 4 obs
● 2007-10-23 07:23:32
● 2016-10-17 13:27:50
○ 2017-01-08 18:06:24
○ 2026-02-22 17:30:58
●NSns6.itsynergy.nl2026-02-22 → 2026-02-22 · 3 obs
○ 2018-09-04 17:29:22
● 2026-02-22 13:53:48
● 2026-02-22 17:30:58
●MXkoers-com.mail.protection.outlook.com2015-08-23 → 2026-02-22 · 3 obs
○ 2007-10-23 07:23:32
● 2015-08-23 09:36:24
● 2026-02-22 17:30:58
○MXmail.koers.com2007-10-23 → 2007-10-23 · 3 obs
● 2007-10-23 07:23:32
○ 2015-08-23 09:36:24
○ 2026-02-22 17:30:58
●A52.18.136.1122026-02-22 → 2026-02-22 · 3 obs
○ 2018-09-04 17:29:22
● 2026-02-22 13:53:48
● 2026-02-22 17:30:58
○A83.149.77.1682007-10-23 → 2007-10-23 · 3 obs
● 2007-10-23 07:23:32
○ 2015-08-23 09:36:24
○ 2026-02-22 17:30:58
○A91.190.98.702015-08-23 → 2018-09-04 · 5 obs
○ 2007-10-23 07:23:32
● 2015-08-23 09:36:24
● 2018-09-04 17:29:22
○ 2026-02-22 13:53:48
○ 2026-02-22 17:30:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comg.gtld-servers.net, d.gtld-servers.net, h.gtld-servers.net, k.gtld-servers.net...-
koers.comns5.itsynergy.nl, ns6.itsynergy.nl-

✅ Authoritative Response

Server: 91.192.36.208

NS records: ns5.itsynergy.nl, ns6.itsynergy.nl

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for koers.com (unsigned zone)

⏱️ Timing

Total: 590ms | Queries: -

📄 Records

TypeCountSample Data
A152.18.136.112
NS2ns5.itsynergy.nl, ns6.itsynergy.nl
MX1koers-com.mail.protection.outlook.com (p
TXT4v=spf1 a mx ip4:91.192.36.208 ip6:2a00:1, MS=ms29987846...
SOA1ns5.itsynergy.nl hostmaster.koers.com

AI analysis

koers.com is a parent of dmz.koers.com and kantoor.koers.com.

koers.com resolves to one IP number: 52.18.136.112.

other host names including oneworldexport.com, creativeroom.be, heim.no, manxcatgenome.com and mediadiffusion.eu share IP numbers with koers.com.

koers.com is delegated to two name servers ns5.itsynergy.nl and ns6.itsynergy.nl.

koers.com shares the same name server setup as other domains, for instance dallaserra.nl, hamavastgoed.com, boelot.nl, vafam.info and dutchweek.nl.

koers.com at least partially shares name servers with other domains, for instance treforce-ict.com, neprom.eu, bewustnieuwbouw.nl, dcinp.com and treforce.com.

these name servers are commonly used alongside ns2.treforce.eu.

Host names with two IP numbers:

The host name ns5.itsynergy.nl points to 2a00:1bd0:0:107::5bc0:24d0 and 91.192.36.208; the host name ns6.itsynergy.nl points to 2a00:1bd0:0:107::5bc0:24d1 and 91.192.36.209.

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