dotbooking.dk
Last scanned: 2026-08-25 22:09:18  ·  794ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   46ms
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   53ms
IPTTLPTRASNISP / OrgCIDRCountryCity
144.91.97.254 360s mail.justworks.dk AS51167 Contabo GmbH 144.91.64.0/18 🇫🇷 France Lauterbourg
📧 MX Records2 records   33ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mx1.justworks.dk 144.91.97.254 mail.justworks.dk AS51167 Contabo GmbH
10 300s mx2.justworks.dk 144.91.97.254 mail.justworks.dk AS51167 Contabo GmbH
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverdotbooking.dk → 144.91.97.254
🔶 Autoconfigdotbooking.dk → 144.91.97.254
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
🔌 SRV Records1 records   76ms
ServicePriorityWeightPortTarget
_autodiscover._tcp 10 10 443 justworks.dk
📝 TXT Records1 records   175ms
TXT Record
v=spf1 ip4:144.91.97.254 ip4:95.128.27.10 ip4:95.128.27.9 ~all
✉️ SPF
PolicyRecord (dotbooking.dk)
~all (soft fail) v=spf1 ip4:144.91.97.254 ip4:95.128.27.10 ip4:95.128.27.9 ~all
📨 DMARC
PolicyRecord (_dmarc.dotbooking.dk)
p=none (monitor only) v=DMARC1; p=none; rua=mailto:postmaster@dotbooking.dk
📬 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.dotbooking.dk dotbooking.dk
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC82ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2022072500
Primary NS (MNAME)ns01.one.com
Responsible (RNAME)support@justworks.dk
Refresh14400s
Retry3600s
Expire604800s
Minimum (neg-cache TTL)300s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
46ms
A
53ms
MX
33ms
AAAA
45ms
TXT
175ms
CAA
51ms
HTTPS
51ms
TLSA
301ms
SOA
0ms
MTA-STS
54ms
DNSSEC
82ms
SRV
76ms
Total
794ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-25 22:09:18 794ms 2 NS 1 A 2 MX 🔓 Insecure View
2026-06-20 00:13:54 518ms 2 NS 1 A 2 MX 🔓 Insecure View
2026-06-17 04:24:13 525ms 2 NS 1 A 2 MX 🔓 Insecure View
2026-06-17 04:20:10 610ms 2 NS 1 A 2 MX 🔓 Insecure View
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