koebbremser.dk

📜 Historical scan 2026-08-31 10:39:17  ·  ← 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   39ms
NameserverIP addressesPTRASN / 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   30ms
IPTTLPTRASNISP / OrgCIDRCountryCity
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   24ms
PriorityTTLMail ServerIP addressesPTRASN
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#

ServiceCNAME / IP
🔷 Autodiscover172.64.149.71
🔶 Autoconfig172.64.149.71

🔷 AAAA Records (IPv6)#

2 records   43ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
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   35ms
PriorityTargetSvcParams
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   173ms
TXT Record
v=spf1 ip4:91.231.97.0/24 ip6:2001:67c:568::/58 ptr mx -all

✉️ SPF#

PolicyRecord (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
www104.18.38.185 172.64.149.71 2606:4700:4400::ac40:9547 2606:4700:4402::6812:26b9 (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardYes: 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#

TypeNameValue
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#

114ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2413549061
Primary NS (MNAME)amir.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-07 04:41:12
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2017-03-31
Expires2027-03-31 (164d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
39ms
A
30ms
MX
24ms
AAAA
43ms
TXT
173ms
CAA
39ms
HTTPS
35ms
TLSA
104ms
SOA
0ms
MTA-STS
45ms
DNSSEC
114ms
SRV
57ms
Total
2067ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
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 shown 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 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
dhd.dk [/] search Domains, Hosts & DNS — .dk zone