knass21.dk
Last scanned: 2026-08-27 01:19:58  ·  740ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   54ms
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 Records1 records   60ms
IPTTLPTRASNISP / OrgCIDRCountryCity
90.185.145.235 600s x5ab991eb.customers.hiper-net.dk AS203953 Hiper A/S 90.184.0.0/15 🇩🇰 Denmark Fredericia
📧 MX Records1 records   62ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s .  Null MX — domain accepts no email (RFC 7505)
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverknass21.dk → 90.185.145.235
🔶 Autoconfigknass21.dk → 90.185.145.235
🔷 AAAA Records (IPv6)1 records   57ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a05:f6c5:195c:0:759c:7094:4db4:437 600s — AS203953 Hiper A/S 2a05:f6c0:0:0:0:0:0:0/29 🇩🇰 Denmark Fredericia
🔐 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
🔏 ACME Challenge
TypeNameValue
CNAME _acme-challenge.knass21.dk knass21.dk
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC84ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026081701
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
54ms
A
60ms
MX
62ms
AAAA
57ms
TXT
173ms
CAA
59ms
HTTPS
59ms
TLSA
100ms
SOA
0ms
MTA-STS
83ms
DNSSEC
84ms
SRV
84ms
Total
740ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 01:19:58 740ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-18 00:57:20 2658ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-17 21:40:07 4800ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-21 11:25:01 609ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-17 11:45:03 4145ms 2 NS 1 A 0 MX 🔒 Secure View
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