uldum-hojskole.dk

📜 Historical scan 2026-07-17 23:49:27 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

uldum-hojskole.dk is a .dk domain served by 2 nameservers (bella.ns.cloudflare.com, mark.ns.cloudflare.com). It was registered on 9 August 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.53.99 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by uldumhojskole-dk01c.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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#

2 records 214ms

Nameserver	IP addresses	PTR	ASN / ISP
bella.ns.cloudflare.com	108.162.192.74 172.64.32.74 173.245.58.74 2606:4700:50::adf5:3a4a 2803:f800:50::6ca2:c04a 2a06:98c1:50::ac40:204a	bella.ns.cloudflare.com bella.ns.cloudflare.com bella.ns.cloudflare.com bella.ns.cloudflare.com bella.ns.cloudflare.com bella.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
mark.ns.cloudflare.com	108.162.193.130 172.64.33.130 173.245.59.130 2606:4700:58::adf5:3b82 2803:f800:50::6ca2:c182 2a06:98c1:50::ac40:2182	mark.ns.cloudflare.com mark.ns.cloudflare.com mark.ns.cloudflare.com mark.ns.cloudflare.com mark.ns.cloudflare.com mark.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 188ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.53.99	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.211.156	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 227ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	uldumhojskole-dk01c.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::2 2a01:111:f403:ca09:: 2a01:111:f403:ca09::9 52.101.68.12 52.101.68.21 52.101.73.22 52.101.73.24	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-du2pr03cu00102.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-as8pr05cu00300.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	172.67.211.156

🔷 AAAA Records (IPv6)#

2 records 234ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:3563	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::ac43:d39c	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 229ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.53.99,172.67.211.156 ech=AEX+DQBBvwAgACASJMm8HDONiC+qrjQIdP2/lLtNhBx7LYi/Y6X2oMu+ewAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:3563,2606:4700:3033::ac43:d39c

📝 TXT Records#

1 records 458ms

TXT Record
v=spf1 include:sendgrid.net include:spf.protection.outlook.com include:datalogik.net ~all

✉️ SPF#

Policy	Record (uldum-hojskole.dk)
~all (soft fail)	v=spf1 include:sendgrid.net include:spf.protection.outlook.com include:datalogik.net ~all

📨 DMARC#

Policy	Record (_dmarc.uldum-hojskole.dk)
p=quarantine	v=DMARC1; p=quarantine; pct=100;

📬 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 2026-10-08 23:56:52

www	104.21.53.99 172.67.211.156 2606:4700:3030::6815:3563 2606:4700:3033::ac43:d39c (AS13335) (address records, no CNAME)
www vs bare domain	Same network uldum-hojskole.dk: 104.21.53.99 172.67.211.156 2606:4700:3030::6815:3563 2606:4700:3033::ac43:d39c (AS13335) www.uldum-hojskole.dk: 104.21.53.99 172.67.211.156 2606:4700:3030::6815:3563 2606:4700:3033::ac43:d39c (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 8/10 · policy: ~all

warn 8 of the 10 allowed DNS lookups used: one more include can break SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

348ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2409767277
Primary NS (MNAME)	bella.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-15 15:30:41

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2000-08-09
Expires	2027-09-30 (338d)

🔗 Same registrant#

4 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
musikkursus.dk	Punktum dk A/S (direct)
uldlyd.dk	Punktum dk A/S (direct)
uldum-hoejskole.dk	Punktum dk A/S (direct)
uldumhøjskole.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

214ms

188ms

227ms

AAAA

234ms

TXT

458ms

CAA

238ms

HTTPS

229ms

TLSA

1219ms

SOA

0ms

MTA-STS

281ms

DNSSEC

348ms

SRV

251ms

Total

5592ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 22:21:56	954ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-26 05:38:27	838ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-25 05:18:09	1342ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-18 04:50:31	1480ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-18 03:51:29	1556ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-07 23:52:09	1925ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-27 06:13:14	9297ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-17 23:49:27 shown	5592ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-17 13:08:58	2516ms	2 NS 2 A 1 MX	🔓 Insecure