cologne.dk

📜 Historical scan 2026-07-28 14:26:45 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cologne.dk is a .dk domain served by 2 nameservers (primary.ns.hostup.se, secondary.ns.hostup.se). It was registered on 3 July 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.72.164 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.cologne.dk. 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 33ms

Nameserver	IP addresses	PTR	ASN / ISP
primary.ns.hostup.se	198.41.222.135 2400:cb00:2049:1::c629:de87	cf-198-41-222-135.cloudflare.com —	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
secondary.ns.hostup.se	162.159.8.163 2400:cb00:2049:1::a29f:8a3	— —	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 31ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.72.164	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.153.38	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 44ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	mail.cologne.dk	185.113.11.10	lambda.hostup.se	AS214640 Hostup AB

🔷 AAAA Records (IPv6)#

2 records 38ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:48a4	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:9926	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 42ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.72.164,172.67.153.38 ech=AEX+DQBB0wAgACCegVtnauYxKU0J88zrrzwzOIr7MYfqDn5M7yQPHp0pRwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:48a4,2606:4700:3034::ac43:9926

📝 TXT Records#

1 records 191ms

TXT Record
v=spf1 mx include:spf.hostup.se ~all

✉️ SPF#

Policy	Record (cologne.dk)
~all (soft fail)	v=spf1 mx include:spf.hostup.se ~all

📨 DMARC#

Policy	Record (_dmarc.cologne.dk)
p=none (monitor only)	v=DMARC1; p=none;

📬 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 02:30:19

www	104.21.72.164 172.67.153.38 2606:4700:3033::6815:48a4 2606:4700:3034::ac43:9926 (AS13335) (address records, no CNAME)
www vs bare domain	Same network cologne.dk: 104.21.72.164 172.67.153.38 2606:4700:3033::6815:48a4 2606:4700:3034::ac43:9926 (AS13335) www.cologne.dk: 104.21.72.164 172.67.153.38 2606:4700:3033::6815:48a4 2606:4700:3034::ac43:9926 (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
default	—	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2045ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2410663338
Primary NS (MNAME)	primary.ns.hostup.se
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-08 20:11:24

Field	Value
Registrar	Simply.com A/S
Registered	2026-07-03
Expires	2027-07-02 (257d)

📋 WHOIS#

⏱️ Lookup Timing#

33ms

31ms

44ms

AAAA

38ms

TXT

191ms

CAA

39ms

HTTPS

42ms

TLSA

69ms

SOA

0ms

MTA-STS

50ms

DNSSEC

2045ms

SRV

54ms

Total

2628ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 02:30:18	1672ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-11 23:05:30	494ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-10 22:42:45	1750ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-08 19:51:38	788ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-29 18:15:53	674ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-25 09:35:05	1936ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-21 14:57:14	1514ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-16 20:47:38	1248ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-07 21:51:11	2286ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 04:47:44	1147ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-21 05:49:41	8990ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-28 14:26:45 shown	2628ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-21 01:28:36	2049ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-04 12:31:21	4860ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-21 00:32:47	1093ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 21:14:42	394ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 21:45:34	999ms	0 NS 0 A 0 MX	❓ Unknown