hdu.dk

📜 Historical scan 2026-08-31 14:43:57 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

hdu.dk is a .dk domain served by 2 nameservers (kate.ns.cloudflare.com, vin.ns.cloudflare.com). It was registered on 6 June 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx01.mail.icloud.com, mx02.mail.icloud.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 113ms

Nameserver	IP addresses	PTR	ASN / ISP
kate.ns.cloudflare.com	108.162.192.124 172.64.32.124 173.245.58.124 2606:4700:50::adf5:3a7c 2803:f800:50::6ca2:c07c 2a06:98c1:50::ac40:207c	kate.ns.cloudflare.com kate.ns.cloudflare.com kate.ns.cloudflare.com kate.ns.cloudflare.com kate.ns.cloudflare.com kate.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
vin.ns.cloudflare.com	108.162.193.245 172.64.33.245 173.245.59.245 2606:4700:58::adf5:3bf5 2803:f800:50::6ca2:c1f5 2a06:98c1:50::ac40:21f5	vin.ns.cloudflare.com vin.ns.cloudflare.com vin.ns.cloudflare.com vin.ns.cloudflare.com vin.ns.cloudflare.com vin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

🌍

No A records found

📧 MX Records#

2 records 89ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx01.mail.icloud.com	17.42.251.62 17.42.251.62 17.42.251.62 17.56.9.31 17.56.9.31 17.57.152.5 17.57.152.5 17.57.152.5 17.57.152.5 17.57.154.33 17.57.154.33 17.57.155.25 17.57.155.25 17.57.156.30 17.57.156.30	mx01.mail.icloud.com mx02.mail.icloud.com mx3.mail.icloud.com mx02.mail.icloud.com mx01.mail.icloud.com mx01.mail.icloud.com ic4-privaterelay.appleid.com smtp1.ic4-privaterelay.appleid.com mx02.mail.icloud.com mx01.mail.icloud.com mx02.mail.icloud.com mx02.mail.icloud.com mx01.mail.icloud.com mx01.mail.icloud.com mx02.mail.icloud.com	AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc.
10	3600s	mx02.mail.icloud.com	17.42.251.62 17.42.251.62 17.42.251.62 17.56.9.31 17.56.9.31 17.57.152.5 17.57.152.5 17.57.152.5 17.57.152.5 17.57.154.33 17.57.154.33 17.57.155.25 17.57.155.25 17.57.156.30 17.57.156.30	mx3.mail.icloud.com mx02.mail.icloud.com mx01.mail.icloud.com mx02.mail.icloud.com mx01.mail.icloud.com mx02.mail.icloud.com smtp1.ic4-privaterelay.appleid.com ic4-privaterelay.appleid.com mx01.mail.icloud.com mx01.mail.icloud.com mx02.mail.icloud.com mx02.mail.icloud.com mx01.mail.icloud.com mx01.mail.icloud.com mx02.mail.icloud.com	AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc. AS714 Apple Inc.

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 477ms

TXT Record
apple-domain=1XnlSU0YvTm4EVhG
v=spf1 include:icloud.com ~all

✉️ SPF#

Policy	Record (hdu.dk)
~all (soft fail)	v=spf1 include:icloud.com ~all

📨 DMARC#

Policy	Record (_dmarc.hdu.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:923878f16f7842a0aadf90f1bf2ad90c@dmarc-reports.cloudflare.net

📬 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 2026-10-20 19:40:05

www	Exists, no address
www vs bare domain	Neither resolves hdu.dk: no address www.hdu.dk: no address
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 5/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.hdu.dk	CZFX1B_paS_CGgw5fJ6WfHx6-0w8fP2iJTz12ET3bDE
TXT	_acme-challenge.hdu.dk	KPJVGDKvJxdEWy8YNdkG75l8lyAtVFbpqMmRtIdXDbI

🔗 TLSA / DANE#

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

🔐 DNSSEC#

343ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

0ms

Field	Value
Serial	2413637289
Primary NS (MNAME)	kate.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-20 19:57:55

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2024-06-06
Expires	2028-06-05 (593d)

📋 WHOIS#

⏱️ Lookup Timing#

113ms

60ms

89ms

AAAA

104ms

TXT

477ms

CAA

162ms

HTTPS

78ms

TLSA

186ms

SOA

0ms

MTA-STS

167ms

DNSSEC

343ms

SRV

166ms

Total

2029ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-20 19:40:05	1715ms	2 NS 0 A 2 MX	🔒 Secure
2026-10-19 17:51:04	631ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-29 22:20:04	691ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-26 03:44:58	1026ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-25 02:55:31	671ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-20 15:21:05	1205ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-15 03:11:58	1083ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-11 03:05:09	3977ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-08 18:06:47	2036ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-05 20:54:06	906ms	2 NS 0 A 2 MX	🔒 Secure
2026-08-31 14:43:57 shown	2029ms	2 NS 0 A 2 MX	🔒 Secure
2026-08-27 14:21:18	945ms	2 NS 0 A 2 MX	🔒 Secure
2026-08-26 05:09:40	719ms	2 NS 0 A 2 MX	🔒 Secure
2026-08-25 03:34:02	16839ms	2 NS 0 A 2 MX	🔒 Secure
2026-08-08 17:53:14	1509ms	2 NS 0 A 2 MX	🔒 Secure
2026-07-17 09:44:32	9677ms	2 NS 0 A 2 MX	🔒 Secure
2026-06-26 18:18:51	1094ms	2 NS 0 A 2 MX	🔒 Secure
2026-06-17 11:10:56	1074ms	2 NS 0 A 2 MX	🔒 Secure
2026-06-17 11:08:32	1423ms	2 NS 0 A 2 MX	🔒 Secure
2026-06-17 11:02:50	1384ms	2 NS 0 A 2 MX	🔒 Secure
2026-06-17 10:57:48	2155ms	2 NS 0 A 2 MX	🔒 Secure