sifsdu.dk
Last scanned: 2026-06-25 01:19:59  ·  801ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   91ms
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 Records1 records   120ms
IPTTLPTRASNISP / OrgCIDRCountryCity
128.140.105.33 7200s 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
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover128.140.105.33
🔶 Autoconfigmail.your-server.de → 78.46.5.205
🔷 AAAA Records (IPv6)1 records   80ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a01:4f8:c0c:4b8e::1 7200s 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
🔌 SRV Records2 records   134ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 0 100 443 mail.your-server.de
_imaps._tcp 0 100 993 mail.your-server.de
📝 TXT Records1 records   289ms
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
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC113ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA73ms
FieldValue
Serial2025121100
Primary NS (MNAME)ns1.your-server.de
Responsible (RNAME)postmaster@your-server.de
Refresh86400s
Retry10800s
Expire3600000s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
91ms
A
120ms
MX
64ms
AAAA
80ms
TXT
289ms
CAA
72ms
HTTPS
82ms
TLSA
112ms
SOA
73ms
MTA-STS
84ms
DNSSEC
113ms
SRV
134ms
Total
801ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-06-25 01:19:59 801ms 3 NS 1 A 0 MX 🔓 Insecure View
2026-06-19 09:17:36 6845ms 3 NS 1 A 0 MX 🔓 Insecure View
2026-06-17 15:54:44 3869ms 3 NS 1 A 0 MX 🔓 Insecure View
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