csdk.dk

📜 Historical scan 2026-08-18 12:28:35 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

csdk.dk is a .dk domain served by 2 nameservers (amanda.ns.cloudflare.com, logan.ns.cloudflare.com). It was registered on 16 September 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.26.4.32 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx1-dk.centerasecurity.dk, mx2-dk.centerasecurity.dk 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 204ms

Nameserver	IP addresses	PTR	ASN / ISP
amanda.ns.cloudflare.com	108.162.192.63 172.64.32.63 173.245.58.63 2606:4700:50::adf5:3a3f 2803:f800:50::6ca2:c03f 2a06:98c1:50::ac40:203f	amanda.ns.cloudflare.com amanda.ns.cloudflare.com amanda.ns.cloudflare.com amanda.ns.cloudflare.com amanda.ns.cloudflare.com amanda.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
logan.ns.cloudflare.com	108.162.193.198 172.64.33.198 173.245.59.198 2606:4700:58::adf5:3bc6 2803:f800:50::6ca2:c1c6 2a06:98c1:50::ac40:21c6	logan.ns.cloudflare.com logan.ns.cloudflare.com logan.ns.cloudflare.com logan.ns.cloudflare.com logan.ns.cloudflare.com logan.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

3 records 217ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.26.4.32	300s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
104.26.5.32	300s	—	AS13335	Cloudflare, Inc.	104.26.0.0/20	—	—
172.67.70.128	300s	—	AS13335	Cloudflare, Inc.	172.67.64.0/18	—	—

📧 MX Records#

3 records 197ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx1-dk.centerasecurity.dk	128.76.60.167 128.76.60.187 89.233.19.127 89.233.19.127 89.233.19.188 89.233.19.188	mx6.centerasecurity.dk mx6.centerasecurity.dk 127.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 188.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S
10	300s	mx2-dk.centerasecurity.dk	128.76.60.168 128.76.60.169 89.233.19.128 89.233.19.128 89.233.19.129 89.233.19.129	mx6.centerasecurity.dk mx6.centerasecurity.dk 128.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 129.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S
20	300s	mx3-dk.centerasecurity.dk	128.76.60.187 89.233.19.129 89.233.19.129	mx6.centerasecurity.dk 129.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3308 Norlys Telco A/S AS3308 Norlys Telco A/S

🔷 AAAA Records (IPv6)#

3 records 188ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:20::681a:420	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::681a:520	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—
2606:4700:20::ac43:4680	300s	—	AS13335	Cloudflare, Inc.	2606:4700:0:0:0:0:0:0/41	—	—

🔐 HTTPS Records#

1 records 202ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.26.4.32,104.26.5.32,172.67.70.128 ech=AEX+DQBBegAgACDd2bh8EHioernztiYAzqP8cOsVzw9HpyfH3L6NAzpvBAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:20::681a:420,2606:4700:20::681a:520,2606:4700:20::ac43:4680

📝 TXT Records#

1 records 430ms

TXT Record
v=spf1 include:_spf.centerasecurity.dk include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (csdk.dk)
-all (hard fail)	v=spf1 include:_spf.centerasecurity.dk include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.csdk.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:640aea3defeb3@dmarc.centerasecurity.com;

📬 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 2026-10-16 17:30:33

www	104.26.4.32 104.26.5.32 172.67.70.128 2606:4700:20::681a:420 2606:4700:20::681a:520 2606:4700:20::ac43:4680 (AS13335) (address records, no CNAME)
www vs bare domain	Same network csdk.dk: 104.26.4.32 104.26.5.32 172.67.70.128 2606:4700:20::681a:420 (AS13335) www.csdk.dk: 104.26.4.32 104.26.5.32 172.67.70.128 2606:4700:20::681a:420 (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

6 records 444ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx1-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx3-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx3-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…

🔐 DNSSEC#

347ms

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	2412503501
Primary NS (MNAME)	amanda.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-13 12:49:43

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2016-09-16
Expires	2027-09-30 (348d)

🔗 Same registrant#

11 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
applesalg.dk	DANDOMAIN A/S
computersalg-email.dk	DANDOMAIN A/S
datacom-edb.dk	DANDOMAIN A/S
duesignori.dk	Punktum dk A/S (direct)
easypc.dk	DANDOMAIN A/S
hifisalg.dk	DANDOMAIN A/S
kamerasalg.dk	DANDOMAIN A/S
notebooksalg.dk	DANDOMAIN A/S
peterdegn.dk	DANDOMAIN A/S
ursalg.dk	DANDOMAIN A/S
vildepriser.dk	DANDOMAIN A/S

📋 WHOIS#

⏱️ Lookup Timing#

204ms

217ms

197ms

AAAA

188ms

TXT

430ms

CAA

241ms

HTTPS

202ms

TLSA

444ms

SOA

0ms

MTA-STS

287ms

DNSSEC

347ms

SRV

256ms

Total

5768ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 17:30:33	2280ms	2 NS 3 A 3 MX	🔓 Insecure
2026-10-10 03:33:37	2711ms	2 NS 3 A 3 MX	🔓 Insecure
2026-08-26 17:04:44	1232ms	2 NS 3 A 3 MX	🔓 Insecure
2026-08-18 12:28:35 shown	5768ms	2 NS 3 A 3 MX	🔓 Insecure
2026-08-11 10:16:49	8781ms	2 NS 3 A 3 MX	🔓 Insecure
2026-06-21 16:28:15	1207ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-21 13:50:19	944ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 17:32:27	877ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-16 23:05:20	1070ms	2 NS 2 A 3 MX	🔓 Insecure