linux-kursus.dk

📜 Historical scan 2026-06-19 16:06:50 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

linux-kursus.dk is a .dk domain served by 3 nameservers (ns.pi.dk, ns2.pi.dk, ns3.pi.dk). It was registered on 7 June 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 188.138.4.36 is hosted by velia.net Internetdienste GmbH (AS29066) in France. Mail is handled by linux-kursus.dk. The zone is not DNSSEC-signed, has no 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 233ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.pi.dk	188.138.2.24	static-ip-188-138-2-24.inaddr.ip-pool.com	AS29066 velia.net Internetdienste GmbH
ns2.pi.dk	194.99.45.76	—	AS204866 Microdata Aps
ns3.pi.dk	212.237.177.6	ns3.pi.dk	AS204151 EWII Bredbaand A/S

🌍 A Records#

1 records 301ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
188.138.4.36	7200s	static-ip-188-138-4-36.inaddr.ip-pool.com	AS29066	velia.net Internetdienste GmbH	188.138.0.0/21	🇫🇷 France	Strasbourg

📧 MX Records#

1 records 208ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	7200s	linux-kursus.dk	188.138.4.36	static-ip-188-138-4-36.inaddr.ip-pool.com	AS29066 velia.net Internetdienste GmbH

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	188.138.4.36
🔶 Autoconfig	188.138.4.36

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-09 12:18:09

www	188.138.4.36 (AS29066) (address records, no CNAME)
www vs bare domain	Same network linux-kursus.dk: 188.138.4.36 (AS29066) www.linux-kursus.dk: 188.138.4.36 (AS29066)
Wildcard	Yes: any name under the zone resolves

🔗 TLSA / DANE#

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

🔐 DNSSEC#

425ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

259ms

Field	Value
Serial	2023091800
Primary NS (MNAME)	ns.pi.dk
Responsible (RNAME)	hostmaster@pi.dk
Refresh	7200s
Retry	3600s
Expire	2600000s
Minimum (neg-cache TTL)	7200s

📋 Registration#

WHOIS fetched 2026-10-10 09:42:56

Field	Value
Registrar	Domænehajen ApS
Registered	1999-06-07
Expires	2027-06-30 (252d)

📋 WHOIS#

⏱️ Lookup Timing#

233ms

301ms

208ms

AAAA

282ms

TXT

653ms

CAA

303ms

HTTPS

329ms

TLSA

264ms

SOA

259ms

MTA-STS

282ms

DNSSEC

425ms

SRV

427ms

Total

1999ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 12:18:09	773ms	3 NS 1 A 1 MX	🔓 Insecure
2026-10-03 07:17:09	6357ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-28 06:32:49	2621ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-02 12:49:42	4380ms	3 NS 1 A 1 MX	🔓 Insecure
2026-08-26 15:49:05	934ms	3 NS 1 A 1 MX	🔓 Insecure
2026-08-09 22:57:26	4829ms	3 NS 1 A 1 MX	🔓 Insecure
2026-07-13 08:36:03	6570ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-19 16:06:50 shown	1999ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-17 20:17:54	1054ms	3 NS 1 A 1 MX	🔓 Insecure