cmk.dk
Last scanned: 2026-09-03 07:01:14  ·  1524ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   49ms
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   54ms
IPTTLPTRASNISP / OrgCIDRCountryCity
176.21.113.227 3600s 176-21-113-227-cable.dk.customer.tdc.net AS3292 TDC Holding A/S 176.21.0.0/16 🇩🇰 Denmark Copenhagen
📧 MX Records1 records   47ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s cmk.dk 176.21.113.227 176-21-113-227-cable.dk.customer.tdc.net AS3292 TDC Holding A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscover176.21.113.227
🔶 Autoconfig176.21.113.227
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   229ms
TXT Record
v=spf1 a mx -all
✉️ SPF
PolicyRecord (cmk.dk)
-all (hard fail) v=spf1 a mx -all
📨 DMARC
PolicyRecord (_dmarc.cmk.dk)
p=quarantine v=DMARC1; p=quarantine; pct=100; rua=mailto:postmaster@klestrup.com
📬 MTA-STS
✗ No MTA-STS policy — SMTP TLS not enforced
📈 TLSRPT
✗ No TLSRPT record — no SMTP TLS failure reporting
📜 CAA Records1 records   64ms
FlagsTagValue
0 issue letsencrypt.org
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC107ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2026082901
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
49ms
A
54ms
MX
47ms
AAAA
52ms
TXT
229ms
CAA
64ms
HTTPS
46ms
TLSA
939ms
SOA
0ms
MTA-STS
66ms
DNSSEC
107ms
SRV
77ms
Total
1524ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-09-03 07:01:14 1524ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-30 01:22:22 1216ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-20 17:17:57 714ms 2 NS 1 A 1 MX 🔒 Secure View
2026-08-06 18:54:14 893ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-29 07:54:19 568ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-23 15:06:03 2929ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-20 16:39:02 1188ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-20 00:01:22 713ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-16 21:50:22 60617ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-16 21:36:41 1583ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-16 21:30:39 496ms 2 NS 1 A 1 MX 🔒 Secure View
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