sifsdu.dk

📜 Historical scan 2026-06-17 15:54:44  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sifsdu.dk is a .dk domain served by 3 nameservers (ns.second-ns.com, ns1.your-server.de, ns3.second-ns.de). It was registered on 27 October 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 128.140.105.33 is hosted by Hetzner Online GmbH (AS24940) in Germany. 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#

3 records   345ms
NameserverIP addressesPTRASN / ISP
ns.second-ns.com 213.239.204.242
2a01:4f8:0:a101::b:1		 ns.second-ns.com
ns.second-ns.com		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
ns1.your-server.de 213.133.100.102
2a01:4f8:0:1::5ddc:1		 ns1.your-server.de
ns1.your-server.de		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
ns3.second-ns.de 193.47.99.4
2001:67c:192c::add:b3		 ns3.second-ns.de
ns3.second-ns.de		 AS12337 noris network AG
AS12337 noris network AG

🌍 A Records#

1 records   339ms
IPTTLPTRASNISP / OrgCIDRCountryCity
128.140.105.33 — static.33.105.140.128.clients.your-server.de AS24940 Hetzner Online GmbH 128.140.0.0/17 🇩🇪 Germany Nuremberg

📧 MX Records#

📧
No MX records found

🔷 AAAA Records (IPv6)#

1 records   353ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a01:4f8:c0c:4b8e::1 — static.33.105.140.128.clients.your-server.de AS24940 Hetzner Online GmbH 2a01:4f8:0:0:0:0:0:0/31 🇩🇪 Germany —

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records   651ms
TXT Record
v=spf1 +a +mx ?all

✉️ SPF#

PolicyRecord (sifsdu.dk)
?all (neutral) v=spf1 +a +mx ?all

📨 DMARC#

PolicyRecord (_dmarc.sifsdu.dk)
p=none (monitor only) v=DMARC1; p=none;

📬 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 2026-10-09 01:45:55
www128.140.105.33 2a01:4f8:c0c:4b8e::1 (AS24940) (address records, no CNAME)
www vs bare domainSame network
WildcardYes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: ?all

  • warn "?all" is neutral: it gives receivers no guidance, much like having no SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

508ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

302ms
FieldValue
Serial2025121100
Primary NS (MNAME)ns1.your-server.de
Responsible (RNAME)postmaster@your-server.de
Refresh86400s
Retry10800s
Expire3600000s
Minimum (neg-cache TTL)3600s

📋 Registration#

WHOIS fetched 2026-10-19 06:22:10
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2023-10-27
Expires2026-10-26 (3d)

🔗 Same registrant#

2 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).

DomainRegistrar
arkobat.dkSimply.com A/S
kristian-jorgensen.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
345ms
A
339ms
MX
319ms
AAAA
353ms
TXT
651ms
CAA
344ms
HTTPS
259ms
TLSA
532ms
SOA
302ms
MTA-STS
355ms
DNSSEC
508ms
SRV
0ms
Total
3869ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-04 00:20:15 854ms 3 NS 1 A 0 MX 🔓 Insecure
2026-09-30 15:20:21 829ms 3 NS 1 A 0 MX 🔓 Insecure
2026-09-27 21:12:00 2556ms 3 NS 1 A 0 MX 🔓 Insecure
2026-06-25 01:19:59 801ms 3 NS 1 A 0 MX 🔓 Insecure
2026-06-19 09:17:36 6845ms 3 NS 1 A 0 MX 🔓 Insecure
2026-06-17 15:54:44 shown 3869ms 3 NS 1 A 0 MX 🔓 Insecure
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