dueb.dk

📜 Historical scan 2026-08-21 15:57:03 · ← Latest scan

🧟 Lame delegation ⬇ Zone File 📜 Timeline & History ⚡ Scan Now

dueb.dk is a registered .dk domain whose nameservers (ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com) do not answer for it, so it is currently a lame delegation and does not resolve. It was registered on 5 January 2010 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. 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#

3 records 308ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.first-ns.de	213.239.242.238 2a01:4f8:0:a101::a:1	ns1.first-ns.de ns1.first-ns.de	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
robotns2.second-ns.de	213.133.100.103 2a01:4f8:0:1::5ddc:2	robotns2.second-ns.de robotns2.second-ns.de	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
robotns3.second-ns.com	193.47.99.3 2001:67c:192c::add:a3	robotns3.second-ns.com robotns3.second-ns.com	AS12337 noris network AG AS12337 noris network AG

🌍 A Records#

🌍

No A records found

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

333ms

Check	Result
Validation Status	❓ Unknown (the delegated nameservers don't answer)
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: failure

🏷️ SOA#

✗ No SOA record found

📋 Registration#

WHOIS fetched 2026-10-25 06:20:05

Field	Value
Registrar	Simply.com A/S
Registered	2010-01-05
Expires	2027-01-31 (98d)

🔗 Same registrant#

1 domain

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
dueburon.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

308ms

277ms

308ms

AAAA

347ms

TXT

1660ms

CAA

346ms

HTTPS

279ms

TLSA

369ms

SOA

37ms

MTA-STS

81ms

DNSSEC

333ms

SRV

1063ms

Total

3250ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-24 00:26:16	6441ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-28 06:43:04	6950ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-23 18:04:25	11115ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-22 16:00:42	7406ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-21 15:57:03 shown	3250ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-20 15:41:59	2581ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-19 14:25:11	12739ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-18 14:22:38	7004ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-17 03:42:55	9138ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-15 15:15:52	4189ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-13 15:19:25	6772ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-12 06:27:04	8269ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-10 23:35:41	12731ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-09 06:18:55	12592ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-07 01:13:53	5269ms	3 NS 0 A 0 MX	❓ Unknown
2026-08-03 07:53:49	6442ms	3 NS 0 A 0 MX	❓ Unknown
2026-07-27 05:59:02	12624ms	3 NS 0 A 0 MX	❓ Unknown
2026-07-26 05:30:38	6342ms	3 NS 0 A 0 MX	❓ Unknown
2026-07-25 05:07:14	20182ms	3 NS 0 A 0 MX	❓ Unknown
2026-07-24 04:38:08	2339ms	3 NS 0 A 0 MX	❓ Unknown
2026-07-23 01:46:08	3301ms	3 NS 0 A 0 MX	❓ Unknown
2026-07-21 05:37:59	10965ms	3 NS 0 A 0 MX	❓ Unknown
2026-07-20 04:17:04	9548ms	3 NS 0 A 0 MX	❓ Unknown
2026-07-19 00:27:34	10330ms	3 NS 0 A 0 MX	❓ Unknown
2026-07-18 00:03:06	6479ms	3 NS 0 A 0 MX	❓ Unknown