knowhowit.dk
📜 Historical scan 2026-07-17 02:17:42  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   37ms
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   24ms
IPTTLPTRASNISP / OrgCIDRCountryCity
85.27.237.9 3600s — AS34705 Norlys Digital A/S 85.27.128.0/17 🇩🇰 Denmark Nørresundby
📧 MX Records1 records   49ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s .  Null MX — domain accepts no email (RFC 7505)
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverknowhowit.dk → 85.27.237.9
🔶 Autoconfigknowhowit.dk → 85.27.237.9
🔷 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
🔏 ACME Challenge
TypeNameValue
CNAME _acme-challenge.knowhowit.dk knowhowit.dk
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC133ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026071101
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
37ms
A
24ms
MX
49ms
AAAA
60ms
TXT
171ms
CAA
33ms
HTTPS
28ms
TLSA
72ms
SOA
0ms
MTA-STS
92ms
DNSSEC
133ms
SRV
176ms
Total
636ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 11:13:45 738ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-12 02:31:18 926ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-21 05:48:06 4760ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-18 08:14:23 9686ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-17 02:17:42 636ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-18 06:17:22 834ms 2 NS 1 A 0 MX 🔒 Secure View
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