koebbremser.dk

📜 Historical scan 2026-08-27 15:07:19 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

koebbremser.dk is a .dk domain served by 2 nameservers (amir.ns.cloudflare.com, dorthy.ns.cloudflare.com). It was registered on 31 March 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.18.38.185 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by smtp2.delti.com. 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 27ms

Nameserver	IP addresses	PTR	ASN / ISP
amir.ns.cloudflare.com	108.162.193.62 172.64.33.62 173.245.59.62 2606:4700:58::adf5:3b3e 2803:f800:50::6ca2:c13e 2a06:98c1:50::ac40:213e	amir.ns.cloudflare.com amir.ns.cloudflare.com amir.ns.cloudflare.com amir.ns.cloudflare.com amir.ns.cloudflare.com amir.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
dorthy.ns.cloudflare.com	108.162.192.249 172.64.32.249 173.245.58.249 2606:4700:50::adf5:3af9 2803:f800:50::6ca2:c0f9 2a06:98c1:50::ac40:20f9	dorthy.ns.cloudflare.com dorthy.ns.cloudflare.com dorthy.ns.cloudflare.com dorthy.ns.cloudflare.com dorthy.ns.cloudflare.com dorthy.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 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.18.38.185	300s	—	AS13335	Cloudflare, Inc.	104.16.0.0/14	—	—
172.64.149.71	300s	—	AS13335	Cloudflare, Inc.	172.64.144.0/20	—	—

📧 MX Records#

1 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	smtp2.delti.com	2001:67c:568:10::200 91.231.97.49	smtp2.delti.com smtp2.delti.com	AS57533 Delticom Ag AS57533 Delticom Ag

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	172.64.149.71
🔶 Autoconfig	104.18.38.185

🔷 AAAA Records (IPv6)#

2 records 37ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:4400::ac40:9547	300s	—	AS13335	Cloudflare, Inc.	2606:4700:4400:0:0:0:0:0/44	—	—
2606:4700:4402::6812:26b9	300s	—	AS13335	Cloudflare, Inc.	2606:4700:4400:0:0:0:0:0/44	—	—

🔐 HTTPS Records#

1 records 39ms

Priority	Target	SvcParams
1 service	.	alpn="h2" ipv4hint=104.18.38.185,172.64.149.71 ipv6hint=2606:4700:4400::ac40:9547,2606:4700:4402::6812:26b9

📝 TXT Records#

1 records 166ms

TXT Record
v=spf1 ip4:91.231.97.0/24 ip6:2001:67c:568::/58 ptr mx -all

✉️ SPF#

Policy	Record (koebbremser.dk)
-all (hard fail)	v=spf1 ip4:91.231.97.0/24 ip6:2001:67c:568::/58 ptr mx -all

📨 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 2026-10-08 05:53:01

www	104.18.38.185 172.64.149.71 2606:4700:4400::ac40:9547 2606:4700:4402::6812:26b9 (AS13335) (address records, no CNAME)
www vs bare domain	Same network koebbremser.dk: 104.18.38.185 172.64.149.71 2606:4700:4400::ac40:9547 2606:4700:4402::6812:26b9 (AS13335) www.koebbremser.dk: 104.18.38.185 172.64.149.71 2606:4700:4400::ac40:9547 2606:4700:4402::6812:26b9 (AS13335)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

warn "ptr" is slow, unreliable and discouraged (RFC 7208 §5.5)

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.koebbremser.dk	2UzZpSdv2DqRM-piEhpYxDb--Q-DNxVI4IjpYdQLSNI
TXT	_acme-challenge.koebbremser.dk	HvF3M-E2ELZgY4F-huWLQMS0lCN6AxL8p1TSRMWxUyo
TXT	_acme-challenge.koebbremser.dk	q866ISkoo6ko7fXsZR3QB4QL3o2dSFOxSPbRjjPdW4M
TXT	_acme-challenge.koebbremser.dk	qGIsk6x5A4c1C7Tk24mM0JUt1WtvW4ZHAZpTJ8aylv4

🔗 TLSA / DANE#

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

🔐 DNSSEC#

106ms

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	2413278254
Primary NS (MNAME)	amir.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-07 04:41:12

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2017-03-31
Expires	2027-03-31 (164d)

📋 WHOIS#

⏱️ Lookup Timing#

27ms

39ms

31ms

AAAA

37ms

TXT

166ms

CAA

31ms

HTTPS

39ms

TLSA

300ms

SOA

0ms

MTA-STS

47ms

DNSSEC

106ms

SRV

63ms

Total

1028ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 05:48:24	2354ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-03 03:19:05	997ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-01 03:09:25	812ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 01:42:58	674ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 01:38:09	2178ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-27 00:24:49	1821ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-24 23:29:48	1135ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-16 22:29:19	1145ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-13 03:09:41	2202ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-08 15:23:51	2988ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-31 10:39:17	2067ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-30 01:55:39	1960ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 15:07:19 shown	1028ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-26 14:30:25	878ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-23 23:55:35	6976ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-06 15:15:07	1449ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-17 16:09:53	1164ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-28 01:53:00	2645ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-25 03:52:54	946ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 14:24:17	1438ms	2 NS 2 A 1 MX	🔓 Insecure