schule.dk
📜 Historical scan 2026-06-17 13:35:59  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers3 records   89ms
NameserverIP addressesPTRASN / ISP
helium.ns.hetzner.de 193.47.99.5
2001:67c:192c::add:5		 helium.ns.hetzner.de
helium.ns.hetzner.de		 AS12337 noris network AG
AS12337 noris network AG
hydrogen.ns.hetzner.com 213.133.100.98
2a01:4f8:0:1::add:1098		 hydrogen.ns.hetzner.com
hydrogen.ns.hetzner.com		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
oxygen.ns.hetzner.com 2a01:4f8:0:1::add:2992
88.198.229.192		 oxygen.ns.hetzner.com
oxygen.ns.hetzner.com		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
🌍 A Records1 records   108ms
IPTTLPTRASNISP / OrgCIDRCountryCity
217.160.174.200 — mail.schule.dk AS8560 IONOS SE 217.160.0.0/16 🇩🇪 Germany —
📧 MX Records1 records   102ms
PriorityTTLMail ServerIP addressesPTRASN
10 — mail.schule.dk 217.160.174.200 mail.schule.dk AS8560 IONOS SE
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   288ms
TXT Record
v=spf1 a mx -all
✉️ SPF
PolicyRecord (schule.dk)
-all (hard fail) v=spf1 a mx -all
📨 DMARC
PolicyRecord (_dmarc.schule.dk)
p=reject v=DMARC1; p=reject; rua=mailto:webmaster@schule.dk; pct=100
📬 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)
🔐 DNSSEC246ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA83ms
FieldValue
Serial2026031901
Primary NS (MNAME)hydrogen.ns.hetzner.com
Responsible (RNAME)dns@hetzner.com
Refresh86400s
Retry10800s
Expire3600000s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
89ms
A
108ms
MX
102ms
AAAA
90ms
TXT
288ms
CAA
92ms
HTTPS
87ms
TLSA
201ms
SOA
83ms
MTA-STS
95ms
DNSSEC
246ms
SRV
0ms
Total
1764ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-06-27 13:06:41 2376ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-26 18:32:33 1802ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-26 01:43:33 804ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-21 10:18:32 1173ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-20 17:30:29 973ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-19 18:31:18 649ms 3 NS 1 A 1 MX 🔓 Insecure View
2026-06-17 13:35:59 1764ms 3 NS 1 A 1 MX 🔓 Insecure View
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