course24.dk

📜 Historical scan 2026-10-01 14:57:12 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

course24.dk is a .dk domain served by 3 nameservers (ns03.2is.nl, ns04.2is.be, ns05.2is.nl). It was registered on 28 February 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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 55ms

Nameserver	IP addresses	PTR	ASN / ISP
ns03.2is.nl	2001:1460:3:4:1c00:b4ff:fe00:270a 62.221.202.199	ns03.2is.nl ns03.2is.nl	AS48635 Your Hosting B.V. AS48635 Your Hosting B.V.
ns04.2is.be	2001:1460:2:2:1c00:4eff:fe00:2bf6 62.221.197.54	ns04b.2is.be ns04.2is.be	AS48635 Your Hosting B.V. AS48635 Your Hosting B.V.
ns05.2is.nl	194.107.180.31 2a0d:7980:2:100:881:27ff:fe7a:1de9	hosted-by.savvii.com —	AS202053 UpCloud Ltd AS202053 UpCloud Ltd

🌍 A Records#

🌍

No A records found

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 232ms

TXT Record
v=spf1 include:spf.spamservice.nl mx a ~all

✉️ SPF#

Policy	Record (course24.dk)
~all (soft fail)	v=spf1 include:spf.spamservice.nl mx a ~all

📨 DMARC#

Policy	Record (_dmarc.course24.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 2026-10-15 20:51:19

www	NXDOMAIN
www vs bare domain	Neither resolves course24.dk: no address www.course24.dk: no address
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

126ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

83ms

Field	Value
Serial	2026100101
Primary NS (MNAME)	ns03.2is.nl
Responsible (RNAME)	domain-admin@2is.nl
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-08 21:32:52

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2013-02-28
Expires	2027-02-28 (133d)

📋 WHOIS#

⏱️ Lookup Timing#

55ms

53ms

45ms

AAAA

42ms

TXT

232ms

CAA

48ms

HTTPS

58ms

TLSA

54ms

SOA

83ms

MTA-STS

75ms

DNSSEC

126ms

SRV

83ms

Total

622ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-15 20:51:19	611ms	3 NS 0 A 0 MX	🔓 Insecure
2026-10-08 16:26:54	673ms	3 NS 0 A 0 MX	🔓 Insecure
2026-10-01 14:57:12 shown	622ms	3 NS 0 A 0 MX	🔓 Insecure
2026-09-27 14:21:05	3195ms	3 NS 0 A 0 MX	🔓 Insecure
2026-09-24 21:19:13	591ms	3 NS 0 A 0 MX	🔓 Insecure
2026-09-22 00:03:22	1074ms	3 NS 0 A 0 MX	🔓 Insecure
2026-09-10 15:44:24	3252ms	3 NS 0 A 0 MX	🔓 Insecure
2026-09-03 15:13:06	1377ms	3 NS 0 A 0 MX	🔓 Insecure
2026-08-27 19:26:19	482ms	3 NS 0 A 0 MX	🔓 Insecure
2026-08-20 04:25:01	1226ms	3 NS 0 A 0 MX	🔓 Insecure
2026-08-13 05:41:25	2160ms	3 NS 0 A 0 MX	🔓 Insecure
2026-08-06 16:23:49	805ms	3 NS 0 A 0 MX	🔓 Insecure
2026-08-03 01:26:47	726ms	3 NS 0 A 0 MX	🔓 Insecure
2026-07-23 09:23:31	783ms	3 NS 0 A 0 MX	🔓 Insecure
2026-07-16 20:30:21	1023ms	3 NS 0 A 0 MX	🔓 Insecure
2026-07-09 05:59:13	948ms	3 NS 0 A 0 MX	🔓 Insecure
2026-07-03 11:20:27	1811ms	3 NS 0 A 0 MX	🔓 Insecure
2026-06-25 23:32:46	641ms	3 NS 0 A 0 MX	🔓 Insecure
2026-06-24 01:54:16	909ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 22:36:29	642ms	3 NS 0 A 0 MX	🔓 Insecure