duuz.dk

📜 Historical scan 2026-09-30 23:10:54 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

duuz.dk is a .dk domain served by 2 nameservers (liz.ns.cloudflare.com, renan.ns.cloudflare.com). It was registered on 10 October 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. 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 41ms

Nameserver	IP addresses	PTR	ASN / ISP
liz.ns.cloudflare.com	108.162.192.189 172.64.32.189 173.245.58.189 2606:4700:50::adf5:3abd 2803:f800:50::6ca2:c0bd 2a06:98c1:50::ac40:20bd	liz.ns.cloudflare.com liz.ns.cloudflare.com liz.ns.cloudflare.com liz.ns.cloudflare.com liz.ns.cloudflare.com liz.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
renan.ns.cloudflare.com	108.162.195.62 162.159.44.62 172.64.35.62 2606:4700:58::a29f:2c3e 2803:f800:50::6ca2:c33e 2a06:98c1:50::ac40:233e	renan.ns.cloudflare.com renan.ns.cloudflare.com renan.ns.cloudflare.com renan.ns.cloudflare.com renan.ns.cloudflare.com renan.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 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.protonmail.ch	176.119.200.128 185.205.70.128 185.70.42.128	mail.protonmail.ch mail.protonmail.ch mail.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG
20	300s	mailsec.protonmail.ch	176.119.200.129 185.205.70.129 185.70.42.129	mailsec.protonmail.ch mailsec.protonmail.ch mailsec.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 202ms

TXT Record
protonmail-verification=07d2c434a2b92b0aff50cc31fe9e64918bde1b42
v=spf1 include:_spf.protonmail.ch ~all

✉️ SPF#

Policy	Record (duuz.dk)
~all (soft fail)	v=spf1 include:_spf.protonmail.ch ~all

📨 DMARC#

Policy	Record (_dmarc.duuz.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:d05c70c1859e48ada85ef0a953b0120a@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 2026-10-08 01:32:17

www	Exists, no address
www vs bare domain	Neither resolves duuz.dk: no address www.duuz.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: 2/10 · policy: ~all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.duuz.dk	6toVt6mOsEhRncWmo9xG4010UaxUnKcTLNQjw4thUSE
TXT	_acme-challenge.duuz.dk	klRKySnZ9cmnjGljvDng8z6pb4FER79OijVEc-9Adrs

🔗 TLSA / DANE#

4 records 53ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…

🔐 DNSSEC#

71ms

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

🏷️ SOA#

52ms

Field	Value
Serial	2415846950
Primary NS (MNAME)	liz.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-03 00:00:21

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-10-10
Expires	2026-12-31 (74d)

📋 WHOIS#

⏱️ Lookup Timing#

41ms

59ms

38ms

AAAA

41ms

TXT

202ms

CAA

41ms

HTTPS

47ms

TLSA

53ms

SOA

52ms

MTA-STS

81ms

DNSSEC

71ms

SRV

68ms

Total

557ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-02 23:15:42	2859ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-30 23:10:54 shown	557ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-27 18:40:50	1199ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-26 06:09:27	4108ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-24 05:39:23	759ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-23 01:25:41	1252ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-20 06:59:33	10136ms	2 NS 0 A 2 MX	🔒 Secure
2026-09-11 02:12:50	1245ms	2 NS 0 A 2 MX	🔒 Secure
2026-08-28 06:27:08	1414ms	2 NS 0 A 2 MX	🔒 Secure
2026-08-17 15:28:14	2951ms	2 NS 0 A 2 MX	🔒 Secure
2026-07-31 12:22:28	1133ms	2 NS 0 A 2 MX	🔒 Secure
2026-07-25 11:56:18	1671ms	2 NS 0 A 2 MX	🔒 Secure
2026-07-23 10:44:04	2120ms	2 NS 0 A 2 MX	🔒 Secure
2026-06-29 16:45:06	738ms	2 NS 0 A 2 MX	🔒 Secure
2026-06-20 01:56:47	1056ms	2 NS 0 A 2 MX	🔒 Secure
2026-06-17 05:05:33	721ms	2 NS 0 A 2 MX	🔒 Secure