duckertholding.dk

📜 Historical scan 2026-07-24 22:45:36 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

duckertholding.dk is a .dk domain served by 2 nameservers (alfred.ns.cloudflare.com, carrera.ns.cloudflare.com). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by duckertholding-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, 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
alfred.ns.cloudflare.com	108.162.195.131 162.159.44.131 172.64.35.131 2606:4700:58::a29f:2c83 2803:f800:50::6ca2:c383 2a06:98c1:50::ac40:2383	alfred.ns.cloudflare.com alfred.ns.cloudflare.com alfred.ns.cloudflare.com alfred.ns.cloudflare.com alfred.ns.cloudflare.com alfred.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
carrera.ns.cloudflare.com	108.162.194.231 162.159.38.231 172.64.34.231 2606:4700:50::a29f:26e7 2803:f800:50::6ca2:c2e7 2a06:98c1:50::ac40:22e7	carrera.ns.cloudflare.com carrera.ns.cloudflare.com carrera.ns.cloudflare.com carrera.ns.cloudflare.com carrera.ns.cloudflare.com carrera.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#

1 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	duckertholding-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca04::b 2a01:111:f403:ca09:: 2a01:111:f403:ca09::d 52.101.68.36 52.101.73.2 52.101.73.24 52.101.73.28	mail-db4pr02cu00307.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-as9pr05cu01305.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-as8pr05cu00300.inbound.protection.outlook.com mail-am7pr05cu00204.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 → 40.104.116.8

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 236ms

TXT Record
MS=ms38688949
v=spf1 include:spf.protection.outlook.com ~all

✉️ SPF#

Policy	Record (duckertholding.dk)
~all (soft fail)	v=spf1 include:spf.protection.outlook.com ~all

📨 DMARC#

Policy	Record (_dmarc.duckertholding.dk)
p=reject	v=DMARC1; p=reject; adkim=r; aspf=r;

📬 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 2026-10-07 21:54:36

www	NXDOMAIN
www vs bare domain	Neither resolves duckertholding.dk: no address www.duckertholding.dk: no address
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-duckertholding-dk._domainkey.jduckertholding.y-v1.dkim.mail.microsoft	RSA · ~2048 bit
selector2	selector2-duckertholding-dk._domainkey.jduckertholding.y-v1.dkim.mail.microsoft	RSA · ~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: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

130ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

0ms

Field	Value
Serial	2410317521
Primary NS (MNAME)	alfred.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

41ms

35ms

47ms

AAAA

46ms

TXT

236ms

CAA

52ms

HTTPS

46ms

TLSA

64ms

SOA

0ms

MTA-STS

85ms

DNSSEC

130ms

SRV

100ms

Total

9138ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-23 18:33:09	1004ms	2 NS 0 A 1 MX	🔓 Insecure
2026-09-13 07:23:11	1284ms	2 NS 0 A 1 MX	🔓 Insecure
2026-08-31 21:34:34	9895ms	2 NS 0 A 1 MX	🔓 Insecure
2026-08-26 09:59:35	1501ms	2 NS 0 A 1 MX	🔓 Insecure
2026-08-23 11:40:01	4784ms	2 NS 0 A 1 MX	🔓 Insecure
2026-07-24 22:45:36 shown	9138ms	2 NS 0 A 1 MX	🔓 Insecure
2026-07-02 19:02:12	10203ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-26 05:58:46	1420ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-24 14:28:54	2105ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-22 17:13:27	2130ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-22 06:11:36	913ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 04:55:41	758ms	2 NS 0 A 1 MX	🔓 Insecure