academicbook.dk
📜 Historical scan 2026-06-16 12:47:22  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   26ms
NameserverIP addressesPTRASN / ISP
lee.ns.cloudflare.com — — —
phoenix.ns.cloudflare.com — — —
🌍 A Records2 records   33ms
IPTTLPTRASNISP / OrgCIDRCountryCity
104.21.54.181 — — AS13335 Cloudflare, Inc. 104.21.0.0/17 — —
172.67.141.6 — — AS13335 Cloudflare, Inc. 172.67.128.0/17 — —
📧 MX Records
📧
No MX records found
🔷 AAAA Records (IPv6)2 records   35ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2606:4700:3030::6815:36b5 — — AS13335 Cloudflare, Inc. 2606:4700:3000::/42 — —
2606:4700:3036::ac43:8d06 — — AS13335 Cloudflare, Inc. 2606:4700:3000::/42 — —
🔐 HTTPS Records1 records   36ms
PriorityTargetSvcParams
1 service . alpn="h3,h2" ipv4hint=104.21.54.181,172.67.141.6 ech=AEX+DQBBzAAgACCRSl2GarTD7edzme/SRSjBGfCZcUyEhedgk/e1csdNQwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:36b5,2606:4700:3036::ac43:8d06
📝 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)
🔐 DNSSEC117ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA32ms
FieldValue
Serial2406584192
Primary NS (MNAME)lee.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
26ms
A
33ms
MX
58ms
AAAA
35ms
TXT
134ms
CAA
27ms
HTTPS
36ms
TLSA
66ms
SOA
32ms
MTA-STS
39ms
DNSSEC
117ms
SRV
0ms
Total
512ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 17:11:44 1076ms 2 NS 2 A 0 MX 🔓 Insecure View
2026-08-09 06:05:39 9926ms 2 NS 2 A 0 MX 🔓 Insecure View
2026-07-25 13:31:21 1177ms 2 NS 2 A 0 MX 🔓 Insecure View
2026-06-29 19:20:37 811ms 2 NS 2 A 0 MX 🔓 Insecure View
2026-06-24 23:21:17 1178ms 2 NS 2 A 0 MX 🔓 Insecure View
2026-06-24 18:16:51 782ms 2 NS 2 A 0 MX 🔓 Insecure View
2026-06-16 12:47:22 512ms 2 NS 2 A 0 MX 🔓 Insecure View
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