undersogelse.dk

📜 Historical scan 2026-09-08 04:49:14 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

undersogelse.dk is a .dk domain served by 2 nameservers (dawn.ns.cloudflare.com, will.ns.cloudflare.com). It was registered on 30 December 2008 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.6.179 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by route1.mx.cloudflare.net, route2.mx.cloudflare.net and 1 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 36ms

Nameserver	IP addresses	PTR	ASN / ISP
dawn.ns.cloudflare.com	108.162.192.106 172.64.32.106 173.245.58.106 2606:4700:50::adf5:3a6a 2803:f800:50::6ca2:c06a 2a06:98c1:50::ac40:206a	dawn.ns.cloudflare.com dawn.ns.cloudflare.com dawn.ns.cloudflare.com dawn.ns.cloudflare.com dawn.ns.cloudflare.com dawn.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
will.ns.cloudflare.com	108.162.193.149 172.64.33.149 173.245.59.149 2606:4700:58::adf5:3b95 2803:f800:50::6ca2:c195 2a06:98c1:50::ac40:2195	will.ns.cloudflare.com will.ns.cloudflare.com will.ns.cloudflare.com will.ns.cloudflare.com will.ns.cloudflare.com will.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 47ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.6.179	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.135.23	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

3 records 48ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
70	300s	route1.mx.cloudflare.net	162.159.205.11 162.159.205.12 162.159.205.13 2606:4700:f5::b 2606:4700:f5::c 2606:4700:f5::d	route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
74	300s	route2.mx.cloudflare.net	162.159.205.17 162.159.205.18 162.159.205.19 2606:4700:f5::10 2606:4700:f5::e 2606:4700:f5::f	route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
87	300s	route3.mx.cloudflare.net	162.159.205.23 162.159.205.24 162.159.205.25 2606:4700:f5::11 2606:4700:f5::12 2606:4700:f5::13	route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🔷 AAAA Records (IPv6)#

2 records 43ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::ac43:8717	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::6815:6b3	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 49ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.6.179,172.67.135.23 ech=AEX+DQBBUQAgACDNTDvoeoKozK6sKaFJ1Szo7Z/fkT3wb5xiwdInzb5xQAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:8717,2606:4700:3035::6815:6b3

📝 TXT Records#

1 records 197ms

TXT Record
v=spf1 include:_spf.mx.cloudflare.net ~all

✉️ SPF#

Policy	Record (undersogelse.dk)
~all (soft fail)	v=spf1 include:_spf.mx.cloudflare.net ~all

📨 DMARC#

Policy	Record (_dmarc.undersogelse.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 2026-10-09 04:27:45

www	104.21.6.179 172.67.135.23 2606:4700:3032::ac43:8717 2606:4700:3035::6815:6b3 (AS13335) (address records, no CNAME)
www vs bare domain	Same network undersogelse.dk: 104.21.6.179 172.67.135.23 2606:4700:3032::ac43:8717 2606:4700:3035::6815:6b3 (AS13335) www.undersogelse.dk: 104.21.6.179 172.67.135.23 2606:4700:3032::ac43:8717 2606:4700:3035::6815:6b3 (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

9 records 69ms

Service / Owner	Type	Cert association
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…

🔐 DNSSEC#

90ms

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	2411886189
Primary NS (MNAME)	dawn.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-17 21:41:21

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2008-12-30
Expires	2027-07-31 (286d)

🔗 Same registrant#

35 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
100bedste.dk	Punktum dk A/S (direct)
100strangers.dk	Punktum dk A/S (direct)
2be.dk	Punktum dk A/S (direct)
3dk.dk	Punktum dk A/S (direct)
6e.dk	Punktum dk A/S (direct)
9p.dk	Punktum dk A/S (direct)
appstore.dk	Punktum dk A/S (direct)
beskedsystemet.dk	Punktum dk A/S (direct)
dahlgommesen.dk	Punktum dk A/S (direct)
dahlmedia.dk	Punktum dk A/S (direct)
delebil.dk	Punktum dk A/S (direct)
dinkundeklub.dk	Punktum dk A/S (direct)
doorletters.dk	Punktum dk A/S (direct)
famdg.dk	Punktum dk A/S (direct)
familieplakaten.dk	Punktum dk A/S (direct)
freelance-saelger.dk	Punktum dk A/S (direct)
gratisgadget.dk	Punktum dk A/S (direct)
gratisjob.dk	Punktum dk A/S (direct)
gratislejebolig.dk	Punktum dk A/S (direct)
helledigevej.dk	Simply.com A/S
iphoneprogrammer.dk	Punktum dk A/S (direct)
jobz.dk	Punktum dk A/S (direct)
larsdahl.dk	Punktum dk A/S (direct)
line-rider.dk	Punktum dk A/S (direct)
macsiden.dk	Punktum dk A/S (direct)
mailtilsms.dk	Punktum dk A/S (direct)
minkundeklub.dk	Punktum dk A/S (direct)
plantepind.dk	Simply.com A/S
qmailer.dk	Punktum dk A/S (direct)
sendgratissms.dk	Punktum dk A/S (direct)
seoinfo.dk	Punktum dk A/S (direct)
smsfree.dk	Punktum dk A/S (direct)
techdeal.dk	Punktum dk A/S (direct)
vindenxbox.dk	Punktum dk A/S (direct)
wifiscanner.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

36ms

47ms

48ms

AAAA

43ms

TXT

197ms

CAA

59ms

HTTPS

49ms

TLSA

69ms

SOA

0ms

MTA-STS

72ms

DNSSEC

90ms

SRV

61ms

Total

934ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 04:27:45	4212ms	2 NS 2 A 3 MX	🔓 Insecure
2026-10-08 04:24:01	4672ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-25 23:28:35	939ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-08 04:49:14 shown	934ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-27 05:32:11	1177ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-11 08:47:17	12052ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-10 06:00:14	2041ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-29 19:20:40	1228ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-28 20:09:31	1096ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-26 09:09:16	2632ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-19 17:10:23	920ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-17 17:35:24	2463ms	2 NS 2 A 3 MX	🔓 Insecure