klasseundervisning.dk
Last scanned: 2026-07-27 03:26:37  ·  25085ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   88ms
NameserverIP addressesPTRASN / ISP
ns1.curanet.dk 185.25.141.12
2a02:2339:4006:108::123		 ns1.curanet.dk
ns1.curanet.dk		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns2.curanet.dk 2a02:2339:1:10f::123:123
91.197.248.75		 ns2.curanet.dk
ns2.curanet.dk		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
🌍 A Records1 records   61ms
IPTTLPTRASNISP / OrgCIDRCountryCity
89.188.72.171 3600s vps1022.basicserver.io AS48854 team.blue Denmark A/S 89.188.72.0/21 🇩🇰 Denmark —
📧 MX Records2 records   91ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mx1.onlinemail.io 185.21.42.12 mx1.onlinemail.io AS48854 team.blue Denmark A/S
20 3600s mx2.onlinemail.io 46.36.208.16 mx2.onlinemail.io AS48854 team.blue Denmark A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverautodiscover-mf.onlinemail.io → 185.21.40.62
🔶 Autoconfigautoconfig-mf.onlinemail.io → 185.21.40.62
🔷 AAAA Records (IPv6)1 records   68ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a02:2339:4009:1:: 3600s — AS48854 team.blue Denmark A/S 2a02:2339:4000:0:0:0:0:0/34 🇩🇰 Denmark —
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   8302ms
TXT Record
_globalsign-domain-verification=N_Ru-OGRH_7X3YMjm47ugHf9AGMmLE64AyrFOJhhDK
v=spf1 include:spf.onlinemail.io ?all
✉️ SPF
PolicyRecord (klasseundervisning.dk)
?all (neutral) v=spf1 include:spf.onlinemail.io ?all
📨 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)
🔐 DNSSEC188ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA67ms
FieldValue
Serial2026052801
Primary NS (MNAME)ns1.curanet.dk
Responsible (RNAME)hostmaster@curanet.dk
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)300s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
88ms
A
61ms
MX
91ms
AAAA
68ms
TXT
8302ms
CAA
84ms
HTTPS
105ms
TLSA
287ms
SOA
67ms
MTA-STS
86ms
DNSSEC
188ms
SRV
152ms
Total
25085ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-07-27 03:26:37 25085ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-25 03:51:44 2469ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-17 19:23:37 829ms 2 NS 1 A 2 MX 🔒 Secure View
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