kortkurs.dk

📜 Historical scan 2026-10-10 08:38:17 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kortkurs.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 9 October 2026 (WHOIS) and first appeared in the .dk zone on 10 October 2026. Its website address 91.98.21.15 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by smtp.google.com. The zone is DNSSEC-signed and validates, 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#

3 records 31ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 25ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.98.21.15	3600s	static.15.21.98.91.clients.your-server.de	AS24940	Hetzner Online GmbH	91.98.0.0/15	🇩🇪 Germany	Nuremberg

📧 MX Records#

1 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	600s	smtp.google.com	142.250.150.26 173.194.73.26 173.194.73.27 2a00:1450:4010:c01::1a 2a00:1450:4010:c01::1a 2a00:1450:4010:c01::1b 2a00:1450:4010:c01::1b 2a00:1450:4010:c0d::1b 2a00:1450:4010:c0d::1b 2a00:1450:4010:c1c::1a 64.233.161.26 64.233.161.27	la-in-f26.1e100.net lq-in-f26.1e100.net lq-in-f27.1e100.net lh-in-x1a.1e100.net lh-in-f26.1e100.net lh-in-x1b.1e100.net lh-in-f27.1e100.net lq-in-x1b.1e100.net lq-in-f27.1e100.net la-in-f26.1e100.net lh-in-f26.1e100.net lh-in-f27.1e100.net	AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC AS15169 Google LLC

🔷 AAAA Records (IPv6)#

1 records 43ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a01:4f8:1c1b:7449::1	3600s	—	AS24940	Hetzner Online GmbH	2a01:4f8:0:0:0:0:0:0/31	🇩🇪 Germany	Nuremberg

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

3 records 117ms

TXT Record
brevo-code:777218618d3b750c3a3da229c232238b
google-site-verification=cLO8mAIQfAJEK363jErqI6TRhUVyDxjNeYJfoX1DbaQ
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (kortkurs.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~all

📨 DMARC#

Policy	Record (_dmarc.kortkurs.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:rua@dmarc.brevo.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 2026-10-13 17:44:41

www	91.98.21.15 2a01:4f8:1c1b:7449::1 (AS24940) (address records, no CNAME)
www vs bare domain	Same network kortkurs.dk: 91.98.21.15 2a01:4f8:1c1b:7449::1 (AS24940) www.kortkurs.dk: 91.98.21.15 2a01:4f8:1c1b:7449::1 (AS24940)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
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
google	—	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: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

51ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

35ms

Field	Value
Serial	2026100909
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-10 09:09:16

Field	Value
Registrar	Simply.com A/S
Registered	2026-10-09
Expires	2027-10-08 (349d)

📋 WHOIS#

⏱️ Lookup Timing#

31ms

25ms

30ms

AAAA

43ms

TXT

117ms

CAA

41ms

HTTPS

34ms

TLSA

155ms

SOA

35ms

MTA-STS

43ms

DNSSEC

51ms

SRV

41ms

Total

542ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 17:44:41	480ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-10 08:38:17 shown	542ms	3 NS 1 A 1 MX	🔒 Secure