4book.dk
📜 Historical scan 2026-06-16 12:52:29  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   121ms
NameserverIP addressesPTRASN / ISP
ns5.kasserver.com — — —
ns6.kasserver.com — — —
🌍 A Records1 records   82ms
IPTTLPTRASNISP / OrgCIDRCountryCity
85.13.146.132 — dd27908.kasserver.com AS34788 Neue Medien Muennich GmbH 85.13.128.0/18 🇩🇪 Germany —
📧 MX Records1 records   72ms
PriorityTTLMail ServerIP addressesPTRASN
10 — w012a775.kasserver.com 85.13.146.132 dd27908.kasserver.com AS34788 Neue Medien Muennich GmbH
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   252ms
TXT Record
v=spf1 a mx include:spf.kasserver.com ~all
✉️ SPF
PolicyRecord (4book.dk)
~all (soft fail) v=spf1 a mx include:spf.kasserver.com ~all
📨 DMARC
PolicyRecord (_dmarc.4book.dk)
p=none (monitor only) v=DMARC1; p=none;
📬 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)
🔐 DNSSEC218ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA78ms
FieldValue
Serial2605270011
Primary NS (MNAME)ns5.kasserver.com
Responsible (RNAME)hostmaster@kasserver.com
Refresh28800s
Retry7200s
Expire1209600s
Minimum (neg-cache TTL)7200s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
121ms
A
82ms
MX
72ms
AAAA
76ms
TXT
252ms
CAA
110ms
HTTPS
83ms
TLSA
184ms
SOA
78ms
MTA-STS
103ms
DNSSEC
218ms
SRV
0ms
Total
1172ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-26 19:25:38 773ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-24 20:30:54 818ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-21 17:42:50 639ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-21 07:44:38 1192ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-16 12:52:29 1172ms 2 NS 1 A 1 MX 🔓 Insecure View
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