semler-academy.dk
Last scanned: 2026-09-01 05:09:43  ·  522ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   50ms
NameserverIP addressesPTRASN / ISP
ns1-04.azure-dns.com 13.107.236.4
2603:1061:0:700::4		 ns1-04.azure-dns.com
ns1-04.azure-dns.com		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
ns2-04.azure-dns.net 150.171.21.4
2620:1ec:8ec:700::4		 ns2-04.azure-dns.net
ns2-04.azure-dns.net		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
ns3-04.azure-dns.org 204.14.183.4
2a01:111:4000:700::4		 ns3-04.azure-dns.org
ns3-04.azure-dns.org		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
ns4-04.azure-dns.info 208.84.5.4
2620:1ec:bda:700::4		 ns4-04.azure-dns.info
ns4-04.azure-dns.info		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
🌍 A Records
🌍
No A records found
📧 MX Records
📧
No MX records found
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   189ms
TXT Record
v=spf1 -all
✉️ SPF
PolicyRecord (semler-academy.dk)
-all (hard fail) v=spf1 -all
📨 DMARC
PolicyRecord (_dmarc.semler-academy.dk)
p=reject v=DMARC1;p=reject;rua=mailto:dmarc_rapport@semler.dk
📬 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)
🔐 DNSSEC102ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsresolution failed: ncache nxrrset
🏷️ SOA0ms
FieldValue
Serial19
Primary NS (MNAME)ns1-04.azure-dns.com
Responsible (RNAME)dnsadmin@kmd.dk
Refresh10800s
Retry3600s
Expire604800s
Minimum (neg-cache TTL)43200s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
50ms
A
46ms
MX
52ms
AAAA
46ms
TXT
189ms
CAA
52ms
HTTPS
58ms
TLSA
39ms
SOA
0ms
MTA-STS
68ms
DNSSEC
102ms
SRV
63ms
Total
522ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-09-01 05:09:43 522ms 4 NS 0 A 0 MX 🔓 Insecure View
2026-06-29 20:44:22 707ms 4 NS 0 A 0 MX 🔓 Insecure View
2026-06-22 23:34:15 606ms 4 NS 0 A 0 MX 🔓 Insecure View
2026-06-20 03:04:42 5043ms 4 NS 0 A 0 MX 🔓 Insecure View
2026-06-17 23:13:05 555ms 4 NS 0 A 0 MX 🔓 Insecure View
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