tkudvikling.dk

📜 Historical scan 2026-09-18 14:53:28 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tkudvikling.dk is a .dk domain served by 2 nameservers (sofia.ns.cloudflare.com, zod.ns.cloudflare.com). It was registered on 23 September 2012 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.20.12 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by aspmx.l.google.com, alt1.aspmx.l.google.com and 3 more. The zone is not DNSSEC-signed, has no 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 128ms

Nameserver	IP addresses	PTR	ASN / ISP
sofia.ns.cloudflare.com	108.162.192.223 172.64.32.223 173.245.58.223 2606:4700:50::adf5:3adf 2803:f800:50::6ca2:c0df 2a06:98c1:50::ac40:20df	sofia.ns.cloudflare.com sofia.ns.cloudflare.com sofia.ns.cloudflare.com sofia.ns.cloudflare.com sofia.ns.cloudflare.com sofia.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
zod.ns.cloudflare.com	108.162.193.250 172.64.33.250 173.245.59.250 2606:4700:58::adf5:3bfa 2803:f800:50::6ca2:c1fa 2a06:98c1:50::ac40:21fa	zod.ns.cloudflare.com zod.ns.cloudflare.com zod.ns.cloudflare.com zod.ns.cloudflare.com zod.ns.cloudflare.com zod.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 103ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.20.12	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.190.197	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

5 records 86ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	300s	aspmx.l.google.com	142.251.9.26 2a00:1450:4025:c01::1a	rc-in-f26.1e100.net rd-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt1.aspmx.l.google.com	192.178.211.27 2404:6800:4000:1025::1a	lcbomp-in-f27.1e100.net lcbomp-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC
5	300s	alt2.aspmx.l.google.com	192.178.158.27 2404:6800:4013:813::1b	lcdels-in-f27.1e100.net lcdels-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	aspmx2.googlemail.com	192.178.211.27 2404:6800:4000:1025::1b	lcbomp-in-f27.1e100.net lcbomp-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC
10	300s	aspmx3.googlemail.com	192.178.158.27 2404:6800:4013:813::1a	lcdels-in-f27.1e100.net lcdels-in-f26.1e100.net	AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

2 records 92ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:140c	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:bec5	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 117ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.20.12,172.67.190.197 ech=AEX+DQBBJQAgACCsB3Y/dhxnMnHJPyyoh+mudNUnoRo4qcrHlfJtIkevKQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:140c,2606:4700:3035::ac43:bec5

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-10 05:03:00

www	104.21.20.12 172.67.190.197 2606:4700:3033::6815:140c 2606:4700:3035::ac43:bec5 (AS13335) (address records, no CNAME)
www vs bare domain	Same network tkudvikling.dk: 104.21.20.12 172.67.190.197 2606:4700:3033::6815:140c 2606:4700:3035::ac43:bec5 (AS13335) www.tkudvikling.dk: 104.21.20.12 172.67.190.197 2606:4700:3033::6815:140c 2606:4700:3035::ac43:bec5 (AS13335)
Wildcard	No

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.tkudvikling.dk	dN59g7J39U-p9hk6GagoEZV5oH4xEcj9ILjZWFopNvk
TXT	_acme-challenge.tkudvikling.dk	flBiXFUHnCNy8ZUW5w6Sp0fOp2VfozkENpNJfs5O1js

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

173ms

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	2414690993
Primary NS (MNAME)	sofia.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-08 14:49:50

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2012-09-23
Expires	2027-09-30 (348d)

📋 WHOIS#

⏱️ Lookup Timing#

128ms

103ms

86ms

AAAA

92ms

TXT

281ms

CAA

141ms

HTTPS

117ms

TLSA

143ms

SOA

0ms

MTA-STS

110ms

DNSSEC

173ms

SRV

145ms

Total

1074ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-10 05:02:59	2031ms	2 NS 2 A 5 MX	🔓 Insecure
2026-10-01 20:32:13	1274ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-28 20:09:06	1358ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-23 17:02:23	899ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-18 14:53:28 shown	1074ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-11 13:18:19	886ms	2 NS 2 A 5 MX	🔓 Insecure
2026-09-07 20:18:38	754ms	2 NS 2 A 5 MX	🔓 Insecure
2026-08-11 04:20:48	1760ms	2 NS 2 A 5 MX	🔓 Insecure
2026-07-15 13:05:21	9596ms	2 NS 2 A 5 MX	🔓 Insecure
2026-06-17 14:37:13	2810ms	2 NS 2 A 5 MX	🔓 Insecure