3kaarhus.dk

📜 Historical scan 2026-09-25 18:55:55 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3kaarhus.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was registered on 30 October 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 20.50.2.16 is hosted by Microsoft Corporation (AS8075) in The Netherlands. Mail is handled by 3kaarhus-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#

2 records 36ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.dandomain.dk	185.25.141.3 2a02:2339:4006:109::dd	ns.dandomain.dk ns.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.dandomain.dk	2a02:2339:1:108::dd:dd 91.197.248.66	ns2.dandomain.dk ns2.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.50.2.16	3600s	—	AS8075	Microsoft Corporation	20.48.0.0/12	🇳🇱 The Netherlands	Amsterdam

📧 MX Records#

1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	360s	3kaarhus-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::a 2a01:111:f403:ca04::d 2a01:111:f403:ca09::20 52.101.103.137 52.101.181.156 52.101.185.21 52.101.68.27	mail-db4pr02cu00204.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-wa4pr05cu00104.inbound.protection.outlook.com mail-zrxpr05cu00105.inbound.protection.outlook.com mail-db7pr03cu00503.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 → 52.98.154.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 130ms

TXT Record
v=spf1 ip4:40.67.208.1 ip4:20.126.124.177 ip4:23.97.187.218 include:spf.protection.outlook.com include:servers.mcsv.net ~all

✉️ SPF#

Policy	Record (3kaarhus.dk)
~all (soft fail)	v=spf1 ip4:40.67.208.1 ip4:20.126.124.177 ip4:23.97.187.218 include:spf.protection.outlook.com include:servers.mcsv.net ~all

📨 DMARC#

Policy	Record (_dmarc.3kaarhus.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:ipm4wwk@ar.glockapps.com; ruf=mailto:ipm4wwk@fr.glockapps.com; adkim=s; aspf=s; fo=1; sp=reject;

📬 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 23:24:56

www CNAME	app-dofweb-prod-001.azurewebsites.net (all on azurewebsites.net) → 20.50.2.16 (AS8075)
www vs bare domain	Same network 3kaarhus.dk: 20.50.2.16 (AS8075) www.3kaarhus.dk: 20.50.2.16 (AS8075)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-3kaarhus-dk._domainkey.danskoplysningsforbund.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: 2/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

69ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2026090401
Primary NS (MNAME)	ns.dandomain.dk
Responsible (RNAME)	hostmaster@dandomain.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-20 08:02:03

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2010-10-30
Expires	2027-10-31 (374d)

🔗 Same registrant#

12 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
dofbillund.dk	Punktum dk A/S (direct)
doffrederikshavn.dk	Punktum dk A/S (direct)
dofikast.dk	CURANET A/S
dofkolding.dk	Punktum dk A/S (direct)
doflillebælt.dk	Punktum dk A/S (direct)
dofranders.dk	Punktum dk A/S (direct)
dofsonderborg.dk	Punktum dk A/S (direct)
dofsønderborg.dk	Punktum dk A/S (direct)
dofvejen.dk	Punktum dk A/S (direct)
dofviborg.dk	Punktum dk A/S (direct)
kulturmix.dk	Punktum dk A/S (direct)
tegneskolekbh.dk	CURANET A/S

📋 WHOIS#

⏱️ Lookup Timing#

36ms

35ms

36ms

AAAA

33ms

TXT

130ms

CAA

33ms

HTTPS

29ms

TLSA

620ms

SOA

0ms

MTA-STS

39ms

DNSSEC

69ms

SRV

83ms

Total

1070ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 08:42:24	1068ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-25 18:55:55 shown	1070ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-09 10:44:26	1530ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-02 19:07:34	730ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-27 16:00:09	1064ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-19 00:56:33	5770ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 12:42:43	692ms	2 NS 1 A 1 MX	🔒 Secure