matematik-fessor.dk
Last scanned: 2026-08-28 06:05:36  ·  700ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   82ms
NameserverIP addressesPTRASN / ISP
cortney.ns.cloudflare.com 108.162.192.87
172.64.32.87
173.245.58.87
2606:4700:50::adf5:3a57
2803:f800:50::6ca2:c057
2a06:98c1:50::ac40:2057		 cortney.ns.cloudflare.com
cortney.ns.cloudflare.com
cortney.ns.cloudflare.com
cortney.ns.cloudflare.com
cortney.ns.cloudflare.com
cortney.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
eric.ns.cloudflare.com 108.162.193.112
172.64.33.112
173.245.59.112
2606:4700:58::adf5:3b70
2803:f800:50::6ca2:c170
2a06:98c1:50::ac40:2170		 eric.ns.cloudflare.com
eric.ns.cloudflare.com
eric.ns.cloudflare.com
eric.ns.cloudflare.com
eric.ns.cloudflare.com
eric.ns.cloudflare.com		 AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
AS13335 Cloudflare, Inc.
🌍 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 Records
📝
No TXT records found
✉️ SPF
✗ No SPF record — mail spoofing not restricted
📨 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)
🔐 DNSSEC189ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsresolution failed: ncache nxrrset
🏷️ SOA0ms
FieldValue
Serial2413218914
Primary NS (MNAME)cortney.ns.cloudflare.com
Responsible (RNAME)dns@cloudflare.com
Refresh10000s
Retry2400s
Expire604800s
Minimum (neg-cache TTL)1800s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
82ms
A
90ms
MX
57ms
AAAA
82ms
TXT
257ms
CAA
63ms
HTTPS
95ms
TLSA
42ms
SOA
0ms
MTA-STS
99ms
DNSSEC
189ms
SRV
101ms
Total
700ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-28 06:05:36 700ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-08-26 15:16:16 369ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-08-20 16:40:03 6280ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-08-19 14:42:55 1997ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-08-17 00:14:51 8761ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-08-14 16:24:38 2809ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-08-13 16:08:45 1621ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-07-01 09:54:25 668ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-06-25 17:58:36 1345ms 2 NS 0 A 0 MX 🔓 Insecure View
2026-06-23 09:59:05 1109ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-17 22:08:45 528ms 2 NS 0 A 0 MX 🔓 Insecure View
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