matematikportalen.dk
Last scanned: 2026-09-04 08:55:15  ·  2355ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   34ms
NameserverIP addressesPTRASN / ISP
ns1-03.azure-dns.com 13.107.236.3
2603:1061:0:700::3		 ns1-03.azure-dns.com
ns1-03.azure-dns.com		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
ns2-03.azure-dns.net 150.171.21.3
2620:1ec:8ec:700::3		 ns2-03.azure-dns.net
ns2-03.azure-dns.net		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
ns3-03.azure-dns.org 204.14.183.3
2a01:111:4000:700::3		 ns3-03.azure-dns.org
ns3-03.azure-dns.org		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
ns4-03.azure-dns.info 208.84.5.3
2620:1ec:bda:700::3		 ns4-03.azure-dns.info
ns4-03.azure-dns.info		 AS8075 Microsoft Corporation
AS8075 Microsoft Corporation
🌍 A Records1 records   45ms
IPTTLPTRASNISP / OrgCIDRCountryCity
86.58.160.162 3600s — AS47292 Sentia Denmark A/S 86.58.160.0/21 🇩🇰 Denmark —
📧 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   191ms
TXT Record
v=spf1 -all
✉️ SPF
PolicyRecord (matematikportalen.dk)
-all (hard fail) v=spf1 -all
📨 DMARC
PolicyRecord (_dmarc.matematikportalen.dk)
p=reject v=DMARC1; p=reject; rua=mailto:62de94a87c3dc@dmarc.centerasecurity.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
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC2053ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial1
Primary NS (MNAME)ns1-03.azure-dns.com
Responsible (RNAME)azuredns-hostmaster@microsoft.com
Refresh3600s
Retry300s
Expire2419200s
Minimum (neg-cache TTL)300s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
34ms
A
45ms
MX
30ms
AAAA
41ms
TXT
191ms
CAA
50ms
HTTPS
36ms
TLSA
48ms
SOA
0ms
MTA-STS
44ms
DNSSEC
2053ms
SRV
69ms
Total
2355ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-09-04 08:55:15 2355ms 4 NS 1 A 0 MX 🔒 Secure View
2026-08-27 09:37:33 813ms 4 NS 1 A 0 MX 🔒 Secure View
2026-07-02 17:56:43 575ms 4 NS 1 A 0 MX 🔒 Secure View
2026-06-21 17:17:49 483ms 4 NS 1 A 0 MX 🔒 Secure View
2026-06-20 22:59:32 480ms 4 NS 1 A 0 MX 🔒 Secure View
2026-06-18 09:12:27 1176ms 4 NS 1 A 0 MX 🔒 Secure View
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