kh21.dk
Last scanned: 2026-09-03 13:07:58  ·  556ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   52ms
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   40ms
IPTTLPTRASNISP / OrgCIDRCountryCity
83.89.248.69 600s 0x5359f845.static.cust.fastspeed.dk AS3292 TDC Holding A/S 83.89.0.0/16 🇩🇰 Denmark Copenhagen
📧 MX Records1 records   44ms
PriorityTTLMail ServerIP addressesPTRASN
0 300s .  Null MX — domain accepts no email (RFC 7505)
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover83.89.248.69
🔶 Autoconfig83.89.248.69
🔷 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)
🔐 DNSSEC77ms
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
52ms
A
40ms
MX
44ms
AAAA
45ms
TXT
196ms
CAA
46ms
HTTPS
40ms
TLSA
98ms
SOA
0ms
MTA-STS
73ms
DNSSEC
77ms
SRV
66ms
Total
556ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-09-03 13:07:58 556ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-18 01:00:01 1802ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-19 09:11:21 4611ms 2 NS 1 A 1 MX 🔒 Secure View
2026-07-18 05:31:05 799ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-26 14:54:33 449ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-24 06:16:26 1175ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-22 23:30:00 1362ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-20 13:47:01 515ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-20 07:44:26 386ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-18 04:31:44 485ms 2 NS 1 A 0 MX 🔒 Secure View
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