instruktoerstol.dk
Last scanned: 2026-07-06 13:02:43  ·  1280ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   203ms
NameserverIP addressesPTRASN / ISP
dns-e.duelhost.dk 49.12.84.170 cde4.duelhost.dk AS24940 Hetzner Online GmbH
dns-f.duelhost.dk 195.201.247.57 dns-f.duelhost.dk AS24940 Hetzner Online GmbH
🌍 A Records1 records   193ms
IPTTLPTRASNISP / OrgCIDRCountryCity
49.12.84.170 3600s cde4.duelhost.dk AS24940 Hetzner Online GmbH 49.12.0.0/15 🇩🇪 Germany Falkenstein
📧 MX Records1 records   170ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mail.instruktoerstol.dk 49.12.84.170 cde4.duelhost.dk AS24940 Hetzner Online GmbH
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   481ms
TXT Record
v=spf1 a mx include:relay.mailchannels.net -all
✉️ SPF
PolicyRecord (instruktoerstol.dk)
-all (hard fail) v=spf1 a mx include:relay.mailchannels.net -all
📨 DMARC
PolicyRecord (_dmarc.instruktoerstol.dk)
p=none (monitor only) v=DMARC1; p=none; sp=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)
🔐 DNSSEC310ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2026070603
Primary NS (MNAME)dns-e.duelhost.dk
Responsible (RNAME)hostmaster@instruktoerstol.dk
Refresh3600s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)86400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
203ms
A
193ms
MX
170ms
AAAA
197ms
TXT
481ms
CAA
196ms
HTTPS
213ms
TLSA
153ms
SOA
0ms
MTA-STS
249ms
DNSSEC
310ms
SRV
239ms
Total
1280ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-07-06 13:02:43 1280ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-22 17:31:01 871ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-20 15:18:05 826ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-19 10:20:11 2916ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-17 14:50:07 388ms 0 NS 0 A 0 MX ❓ Unknown View
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