kursuscenteret.dk

📜 Historical scan 2026-07-27 08:12:29 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kursuscenteret.dk is a .dk domain served by 3 nameservers (ns.efif.dk, ns2.efif.dk, ns3.efif.dk). It was registered on 12 January 2009 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 195.254.168.52 is hosted by Aarhus Business College (AS51073) in Denmark. Mail is handled by kursuscenteret-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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 37ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.efif.dk	195.254.168.23	ns.efif.dk	AS51073 Aarhus Business College
ns2.efif.dk	195.254.168.12	ns2.efif.dk	AS51073 Aarhus Business College
ns3.efif.dk	20.23.170.35	—	AS8075 Microsoft Corporation

🌍 A Records#

1 records 38ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
195.254.168.52	3600s	cphbusiness.dk ek.dk keanet.dk kompetence.kea.dk redirect.efif.dk	AS51073	Aarhus Business College	195.254.168.0/23	🇩🇰 Denmark	Højbjerg

📧 MX Records#

1 records 34ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	kursuscenteret-dk.mail.protection.outlook.com	2a01:111:f403:ca04::f 2a01:111:f403:ca09::1 2a01:111:f403:ca09::6 2a01:111:f403:ca09::8 52.101.68.0 52.101.68.12 52.101.73.24 52.101.73.26	mail-db7pr03cu00507.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-db3pr0202cu00100.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-as8pr05cu00300.inbound.protection.outlook.com mail-as9pr05cu01302.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.99.211.24

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

4 records 8371ms

TXT Record
O012qF3ZdumG9264WWBcIBDL8i69RXIaso3Gf726TYLKPwOqEWCfv67UjoU36NWWU61fXB9KEU+9hQN41rcg4A==
Teknisk Skole Silkeborg
uvmid=743401
v=spf1 redirect=_spf.efif.dk

✉️ SPF#

Policy	Record (kursuscenteret.dk)
redirect=_spf.efif.dk	v=spf1 redirect=_spf.efif.dk

📨 DMARC#

Policy	Record (_dmarc.kursuscenteret.dk)
p=reject	v=DMARC1; p=reject; pct=100; ruf=mailto:analyze@efif.dk; rua=mailto:64e88d13a948b@dmarc.centerasecurity.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 2026-10-23 03:49:12

www CNAME	kursuscenteret.dk (all on kursuscenteret.dk) → 195.254.168.52 (AS51073)
www vs bare domain	Same network kursuscenteret.dk: 195.254.168.52 (AS51073) www.kursuscenteret.dk: 195.254.168.52 (AS51073)
Wildcard	No
Denial of existence	NSEC3 · 50 iterations · 8-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-kursuscenteret-dk._domainkey.efif.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-kursuscenteret-dk._domainkey.efif.onmicrosoft.com	RSA · ~1024 bit below 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: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

131ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2013122141
Primary NS (MNAME)	ns.efif.dk
Responsible (RNAME)	dns-zc@efif.dk
Refresh	14400s
Retry	3600s
Expire	2419200s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-14 13:30:26

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2009-01-12
Expires	2027-01-31 (99d)

🔗 Same registrant#

13 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).

Domain	Registrar
c360.dk	Punktum dk A/S (direct)
college360.dk	Punktum dk A/S (direct)
handelsskolen-silkeborg.dk	Punktum dk A/S (direct)
handelsskolensilkeborg.dk	Punktum dk A/S (direct)
hssilke.dk	Punktum dk A/S (direct)
hssilkeborg.dk	Punktum dk A/S (direct)
hsskyen.dk	Punktum dk A/S (direct)
learnsilkeborg.dk	Punktum dk A/S (direct)
piu-sekretariatet.dk	Punktum dk A/S (direct)
piu.dk	Punktum dk A/S (direct)
silkeborg-handelsskole.dk	Punktum dk A/S (direct)
silkeborghs.dk	Punktum dk A/S (direct)
silkehs.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

37ms

38ms

34ms

AAAA

53ms

TXT

8371ms

CAA

37ms

HTTPS

48ms

TLSA

215ms

SOA

0ms

MTA-STS

59ms

DNSSEC

131ms

SRV

1659ms

Total

9273ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-23 03:49:12	515ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-19 19:52:11	1849ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-14 13:11:44	1608ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-08 05:45:27	2643ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-07 02:45:07	1336ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-02 22:18:47	1124ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-27 21:38:01	2613ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-23 20:25:15	2033ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-20 17:33:34	1910ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-16 12:46:21	1442ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-12 10:07:55	7112ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-05 09:34:29	1215ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-30 20:47:02	2634ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-25 10:20:02	2484ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-24 10:01:39	2746ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-19 03:08:36	7582ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-17 17:01:01	5894ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-14 13:44:19	6960ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-09 21:54:38	4196ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-06 20:08:14	7821ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-27 08:12:29 shown	9273ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-23 06:20:02	2901ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-21 01:40:52	14648ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-15 11:46:15	1808ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-11 17:43:42	3007ms	3 NS 1 A 1 MX	🔒 Secure