undervisernet.dk
Last scanned: 2026-06-22 20:50:18  ·  847ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   57ms
NameserverIP addressesPTRASN / ISP
ns.dandomain.dk 185.25.141.3
2a02:2339:4006:109::dd		 ns.dandomain.dk
ns.dandomain.dk		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns2.dandomain.dk 2a02:2339:1:108::dd:dd
91.197.248.66		 ns2.dandomain.dk
ns2.dandomain.dk		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
🌍 A Records1 records   59ms
IPTTLPTRASNISP / OrgCIDRCountryCity
65.21.4.12 600s static.12.4.21.65.clients.your-server.de AS24940 Hetzner Online GmbH 65.21.0.0/16 🇫🇮 Finland Helsinki
📧 MX Records2 records   25ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mxa.eu.mailgun.org 34.111.130.244 244.130.111.34.bc.googleusercontent.com AS396982 Google LLC
10 3600s mxb.eu.mailgun.org 34.111.130.244 244.130.111.34.bc.googleusercontent.com AS396982 Google LLC
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverfrontend.undervisernet.dk → 65.21.4.12
🔶 Autoconfigfrontend.undervisernet.dk → 65.21.4.12
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   188ms
TXT Record
v=spf1 include:mailgun.org ~all
✉️ SPF
PolicyRecord (undervisernet.dk)
~all (soft fail) v=spf1 include:mailgun.org ~all
📨 DMARC
PolicyRecord (_dmarc.undervisernet.dk)
p=none (monitor only) v=DMARC1; p=none; pct=100; fo=1; ri=3600; rua=mailto:f0bd0ffe@dmarc.mailgun.org,mailto:d2c6ced7@inbox.ondmarc.com; ruf=mailto:f0bd0ffe@dmarc.mailgun.org,mailto:d2c6ced7@inbox.ondmarc.com;
📬 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
🔏 ACME Challenge
TypeNameValue
CNAME _acme-challenge.undervisernet.dk frontend.undervisernet.dk
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC72ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA43ms
FieldValue
Serial2025112601
Primary NS (MNAME)ns.dandomain.dk
Responsible (RNAME)hostmaster@dandomain.dk
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)300s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
57ms
A
59ms
MX
25ms
AAAA
32ms
TXT
188ms
CAA
33ms
HTTPS
43ms
TLSA
95ms
SOA
43ms
MTA-STS
65ms
DNSSEC
72ms
SRV
79ms
Total
847ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-06-22 20:50:18 847ms 2 NS 1 A 2 MX 🔒 Secure View
2026-06-18 05:26:49 3153ms 2 NS 1 A 2 MX 🔒 Secure View
dhd.dk [/] search Domains, Hosts & DNS — .dk zone