kursusguide.dk

📜 Historical scan 2026-09-25 14:31:40 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kursusguide.dk is a .dk domain served by 2 nameservers (cloe.ns.cloudflare.com, sri.ns.cloudflare.com). It was registered on 5 November 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.91.152 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1.pub.mailpod11-cph3.one.com, mx2.pub.mailpod11-cph3.one.com and 2 more. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 39ms

Nameserver	IP addresses	PTR	ASN / ISP
cloe.ns.cloudflare.com	108.162.192.86 172.64.32.86 173.245.58.86 2606:4700:50::adf5:3a56 2803:f800:50::6ca2:c056 2a06:98c1:50::ac40:2056	cloe.ns.cloudflare.com cloe.ns.cloudflare.com cloe.ns.cloudflare.com cloe.ns.cloudflare.com cloe.ns.cloudflare.com cloe.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
sri.ns.cloudflare.com	108.162.193.234 172.64.33.234 173.245.59.234 2606:4700:58::adf5:3bea 2803:f800:50::6ca2:c1ea 2a06:98c1:50::ac40:21ea	sri.ns.cloudflare.com sri.ns.cloudflare.com sri.ns.cloudflare.com sri.ns.cloudflare.com sri.ns.cloudflare.com sri.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 34ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.91.152	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.223.115	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

4 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx1.pub.mailpod11-cph3.one.com	104.37.34.230	mx1.pub.mailpod11-cph3.one.com	AS51468 One.com A/S
10	300s	mx2.pub.mailpod11-cph3.one.com	104.37.34.231	mx2.pub.mailpod11-cph3.one.com	AS51468 One.com A/S
10	300s	mx3.pub.mailpod11-cph3.one.com	104.37.34.232	mx3.pub.mailpod11-cph3.one.com	AS51468 One.com A/S
10	300s	mx4.pub.mailpod11-cph3.one.com	104.37.34.233	mx4.pub.mailpod11-cph3.one.com	AS51468 One.com A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	104.21.91.152
🔶 Autoconfig	104.21.91.152

🔷 AAAA Records (IPv6)#

2 records 50ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::6815:5b98	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:df73	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 51ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.91.152,172.67.223.115 ech=AEX+DQBB6QAgACCbhJoDuXiT0v7o2x7cF53w7EfDWpJARivpq7Qkr5eWUwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::6815:5b98,2606:4700:3034::ac43:df73

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

Policy	Record (_dmarc.kursusguide.dk)
p=reject	v=DMARC1; p=reject;

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-14 06:24:23

www	104.21.91.152 172.67.223.115 2606:4700:3032::6815:5b98 2606:4700:3034::ac43:df73 (AS13335) (address records, no CNAME)
www vs bare domain	Same network kursusguide.dk: 104.21.91.152 172.67.223.115 2606:4700:3032::6815:5b98 2606:4700:3034::ac43:df73 (AS13335) www.kursusguide.dk: 104.21.91.152 172.67.223.115 2606:4700:3032::6815:5b98 2606:4700:3034::ac43:df73 (AS13335)
Wildcard	Yes: any name under the zone resolves

🔗 TLSA / DANE#

4 records 87ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.pub.mailpod11-cph3.one.com	DANE-EE · SPKI · SHA-256	24F573980561755185B794745411B05D…
SMTP _25._tcp.mx2.pub.mailpod11-cph3.one.com	DANE-EE · SPKI · SHA-256	24F573980561755185B794745411B05D…
SMTP _25._tcp.mx3.pub.mailpod11-cph3.one.com	DANE-EE · SPKI · SHA-256	24F573980561755185B794745411B05D…
SMTP _25._tcp.mx4.pub.mailpod11-cph3.one.com	DANE-EE · SPKI · SHA-256	24F573980561755185B794745411B05D…

🔐 DNSSEC#

2047ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2413270038
Primary NS (MNAME)	cloe.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-14 06:48:02

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-11-05
Expires	2027-07-31 (285d)

🔗 Same registrant#

100 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
aaretrundt.dk	Punktum dk A/S (direct)
articlefinder.dk	Punktum dk A/S (direct)
artikelfinder.dk	Punktum dk A/S (direct)
b-to-b.dk	Punktum dk A/S (direct)
buildingtech.dk	Punktum dk A/S (direct)
buyersguide.dk	Punktum dk A/S (direct)
cv-finder.dk	Punktum dk A/S (direct)
digital-tech-summit.dk	Punktum dk A/S (direct)
digitaltechsummit.dk	Punktum dk A/S (direct)
e-12.dk	Punktum dk A/S (direct)
ebranchen.dk	Punktum dk A/S (direct)
elek.dk	Punktum dk A/S (direct)
elektronik-10.dk	Punktum dk A/S (direct)
elektronik-14.dk	Punktum dk A/S (direct)
elektronik12.dk	Punktum dk A/S (direct)
elektronik14.dk	Punktum dk A/S (direct)
elektronik16.dk	Punktum dk A/S (direct)
fact-finder.dk	Punktum dk A/S (direct)
ide-finder.dk	Punktum dk A/S (direct)
idefinder.dk	Punktum dk A/S (direct)
ing-bog.dk	Punktum dk A/S (direct)
ing-books.dk	Punktum dk A/S (direct)
ing-katalog.dk	Punktum dk A/S (direct)
ing-konference.dk	Punktum dk A/S (direct)
ing-leverance.dk	Punktum dk A/S (direct)
ing-net.dk	Punktum dk A/S (direct)
ing-produkt.dk	Punktum dk A/S (direct)
ingbog.dk	Punktum dk A/S (direct)
ingenioererne.dk	Punktum dk A/S (direct)
ingeniorenplus.dk	Punktum dk A/S (direct)
ingeniorportalen.dk	Punktum dk A/S (direct)
ingeniøerne.dk	Punktum dk A/S (direct)
ingeniøren.dk	Punktum dk A/S (direct)
ingenuity.dk	Punktum dk A/S (direct)
ingmail.dk	Punktum dk A/S (direct)
it-ord.dk	Punktum dk A/S (direct)
it-ordbog.dk	Punktum dk A/S (direct)
jobfest.dk	Punktum dk A/S (direct)
jobfinderen.dk	Punktum dk A/S (direct)
jobtraeflive.dk	Punktum dk A/S (direct)
jobtræf.dk	Punktum dk A/S (direct)
mailing.dk	Punktum dk A/S (direct)
maskinportalen.dk	Punktum dk A/S (direct)
mediehuset-ing.dk	Punktum dk A/S (direct)
mobilitytech.dk	Punktum dk A/S (direct)
musicfinder.dk	Punktum dk A/S (direct)
netmesse.dk	Punktum dk A/S (direct)
netprodukt.dk	Punktum dk A/S (direct)
newsfinder.dk	Punktum dk A/S (direct)
opfind.dk	Punktum dk A/S (direct)
patentfinder.dk	Punktum dk A/S (direct)
procesautomation-04.dk	Punktum dk A/S (direct)
product-guide.dk	Punktum dk A/S (direct)
product-guiden.dk	Punktum dk A/S (direct)
productfinder.dk	Punktum dk A/S (direct)
productguiden.dk	Punktum dk A/S (direct)
produktguide.dk	Punktum dk A/S (direct)
produktionsbranchen.dk	Punktum dk A/S (direct)
produktpris.dk	Punktum dk A/S (direct)
proing.dk	Punktum dk A/S (direct)
projektlederdag.dk	Punktum dk A/S (direct)
projektlederdagen.dk	Punktum dk A/S (direct)
protechmedia.dk	Punktum dk A/S (direct)
raadgiver-forum.dk	Punktum dk A/S (direct)
raadgivertraef.dk	Punktum dk A/S (direct)
radarmedia.dk	Punktum dk A/S (direct)
rådgivertræf.dk	Punktum dk A/S (direct)
softwarefinder.dk	Punktum dk A/S (direct)
specialistjob.dk	Punktum dk A/S (direct)
specialjob.dk	Punktum dk A/S (direct)
statens-jobbase.dk	Punktum dk A/S (direct)
statens-jobmarked.dk	Punktum dk A/S (direct)
statjob.dk	Punktum dk A/S (direct)
statusbiotech.dk	Punktum dk A/S (direct)
stem-medier.dk	Punktum dk A/S (direct)
stemmedier.dk	Punktum dk A/S (direct)
t4e.dk	Punktum dk A/S (direct)
talent4europe.dk	Punktum dk A/S (direct)
techjobfinder.dk	Punktum dk A/S (direct)
techmanagement.dk	Punktum dk A/S (direct)
techmedier.dk	Punktum dk A/S (direct)
technetvaerk.dk	Punktum dk A/S (direct)
techplusmedia.dk	Punktum dk A/S (direct)
techpress.dk	Punktum dk A/S (direct)
techpromedia.dk	Punktum dk A/S (direct)
techpublishing.dk	Punktum dk A/S (direct)
techsearch.dk	Punktum dk A/S (direct)
tekhus.dk	Punktum dk A/S (direct)
tekjob.dk	Punktum dk A/S (direct)
tekjobs.dk	Punktum dk A/S (direct)
teknologiens.dk	Punktum dk A/S (direct)
teknologiensmedier.dk	Punktum dk A/S (direct)
teknologiensnichemedier.dk	Punktum dk A/S (direct)
teknologisk-forspring.dk	Punktum dk A/S (direct)
teknologiskforspring.dk	Punktum dk A/S (direct)
toolfinder.dk	Punktum dk A/S (direct)
ungeopfindere.dk	Punktum dk A/S (direct)
v2job.dk	Punktum dk A/S (direct)
version2.dk	Eurodns S.A
versionto.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

39ms

34ms

42ms

AAAA

50ms

TXT

215ms

CAA

42ms

HTTPS

51ms

TLSA

87ms

SOA

0ms

MTA-STS

57ms

DNSSEC

2047ms

SRV

70ms

Total

2642ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 06:24:23	864ms	2 NS 2 A 4 MX	🔓 Insecure
2026-09-25 14:31:40 shown	2642ms	2 NS 2 A 4 MX	🔓 Insecure
2026-08-28 00:52:22	732ms	2 NS 2 A 4 MX	🔓 Insecure
2026-08-27 00:21:37	678ms	2 NS 2 A 4 MX	🔓 Insecure
2026-08-16 12:03:03	2111ms	2 NS 2 A 4 MX	🔓 Insecure
2026-06-20 06:40:05	845ms	2 NS 2 A 4 MX	🔓 Insecure
2026-06-18 00:19:41	4878ms	2 NS 2 A 4 MX	🔓 Insecure