4kb.dk
Last scanned: 2026-08-12 12:16:18  ·  2639ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   185ms
NameserverIP addressesPTRASN / ISP
ns01.one.com 195.206.121.10
2001:67c:28cc::10		 ns01.one.com
ns01.one.com		 AS197495 One.com A/S
AS197495 One.com A/S
ns02.one.com 185.10.11.10
2001:67c:3c0::10		 ns02.one.com
ns02.one.com		 AS51468 One.com A/S
AS51468 One.com A/S
🌍 A Records
🌍
No A records found
📧 MX Records1 records   211ms
PriorityTTLMail ServerIP addressesPTRASN
15 43200s mail.4kb.dk 195.128.174.78 vdom94.net.dk2.zitcom.dk AS48854 team.blue Denmark A/S
🔷 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)
🔐 DNSSEC620ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsresolution failed: ncache nxrrset
🏷️ SOA0ms
FieldValue
Serial2026081101
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)hostmaster@one.com
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
185ms
A
202ms
MX
211ms
AAAA
264ms
TXT
709ms
CAA
271ms
HTTPS
196ms
TLSA
343ms
SOA
0ms
MTA-STS
307ms
DNSSEC
620ms
SRV
276ms
Total
2639ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-12 12:16:18 2639ms 2 NS 0 A 1 MX 🔒 Secure View
2026-07-17 22:03:39 2565ms 2 NS 0 A 1 MX 🔒 Secure View
2026-07-13 15:19:26 791ms 2 NS 0 A 1 MX 🔒 Secure View
2026-06-28 04:10:29 584ms 2 NS 0 A 1 MX 🔒 Secure View
2026-06-23 14:59:13 928ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-18 14:13:20 564ms 2 NS 0 A 1 MX 🔒 Secure View
2026-06-16 12:53:28 956ms 2 NS 0 A 1 MX 🔒 Secure View
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