korthsen.dk

📜 Historical scan 2026-09-17 06:30:58  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

korthsen.dk is a .dk domain served by 2 nameservers (elias.ns.cloudflare.com, perla.ns.cloudflare.com). It was registered on 4 November 2005 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.19.225 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.kiil.net. 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   71ms
NameserverIP addressesPTRASN / ISP
elias.ns.cloudflare.com 108.162.195.29
162.159.44.29
172.64.35.29
2606:4700:58::a29f:2c1d
2803:f800:50::6ca2:c31d
2a06:98c1:50::ac40:231d		 elias.ns.cloudflare.com
elias.ns.cloudflare.com
elias.ns.cloudflare.com
elias.ns.cloudflare.com
elias.ns.cloudflare.com
elias.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
perla.ns.cloudflare.com 108.162.194.203
162.159.38.203
172.64.34.203
2606:4700:50::a29f:26cb
2803:f800:50::6ca2:c2cb
2a06:98c1:50::ac40:22cb		 perla.ns.cloudflare.com
perla.ns.cloudflare.com
perla.ns.cloudflare.com
perla.ns.cloudflare.com
perla.ns.cloudflare.com
perla.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   70ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.19.225 300s — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.190.109 300s — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —

📧 MX Records#

1 records   907ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mail.kiil.net 85.191.123.41 mail.kiil.net AS204274 AURA Fiber A/S

🔷 AAAA Records (IPv6)#

2 records   46ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3033::6815:13e1 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —
2606:4700:3033::ac43:be6d 300s — AS13335 Cloudflare, Inc. 2606:4700:3000:0:0:0:0:0/42 — —

🔐 HTTPS Records#

1 records   45ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.19.225,172.67.190.109 ech=AEX+DQBB1AAgACD73qk/JjJn0BqXz5g6C97g7PMxgy9nXQbjEXFB98++NAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::6815:13e1,2606:4700:3033::ac43:be6d

📝 TXT Records#

1 records   204ms
TXT Record
v=spf1 mx a ?all

✉️ SPF#

PolicyRecord (korthsen.dk)
?all (neutral) v=spf1 mx a ?all

📨 DMARC#

PolicyRecord (_dmarc.korthsen.dk)
p=none (monitor only) v=DMARC1; p=none; pct=100; rua=mailto:re+d8zf9dfb4ni@dmarc.postmarkapp.com; sp=none; aspf=r;

📬 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 2026-10-15 14:27:45
www188.114.96.1 188.114.97.1 2606:4700:3033::6815:13e1 2606:4700:3033::ac43:be6d (AS13335) (address records, no CNAME)
www vs bare domainSame network
WildcardNo

✍️ DKIM keys#

1 found
SelectorCNAMEKey
mail — 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

  • warn "?all" is neutral: it gives receivers no guidance, much like having no SPF

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.korthsen.dk 3AhH7Vk9GFcBAJH6_uTQa4C_ZyTHCWDWOEFgRox7tqI
TXT _acme-challenge.korthsen.dk im8XkD6GuUbRNIx7jvVYqOgIIGEP7lG0-calr3Xn4j4

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2061ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2414933142
Primary NS (MNAME)elias.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s

📋 Registration#

WHOIS fetched 2026-10-15 14:52:32
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2005-11-04
Expires2026-11-30 (44d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet
📋 WHOIS#

⏱️ Lookup Timing#

NS
71ms
A
70ms
MX
907ms
AAAA
46ms
TXT
204ms
CAA
41ms
HTTPS
45ms
TLSA
92ms
SOA
0ms
MTA-STS
73ms
DNSSEC
2061ms
SRV
98ms
Total
2634ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-15 14:27:45 693ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-23 18:26:11 1792ms 2 NS 2 A 1 MX 🔓 Insecure
2026-09-17 06:30:58 shown 2634ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-28 10:45:17 10877ms 2 NS 2 A 1 MX 🔓 Insecure
2026-08-16 18:36:46 1252ms 2 NS 2 A 1 MX 🔓 Insecure
2026-07-18 21:55:07 1222ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-25 07:55:57 809ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-24 05:27:12 1014ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-18 15:33:22 2350ms 2 NS 2 A 1 MX 🔓 Insecure
2026-06-17 14:45:57 1731ms 2 NS 2 A 1 MX 🔓 Insecure
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