ztrong.dk
Last scanned: 2026-08-26 14:35:16  ·  718ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   57ms
NameserverIP addressesPTRASN / ISP
ns1.curanet.dk 185.25.141.12
2a02:2339:4006:108::123		 ns1.curanet.dk
ns1.curanet.dk		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
ns2.curanet.dk 2a02:2339:1:10f::123:123
91.197.248.75		 ns2.curanet.dk
ns2.curanet.dk		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
🌍 A Records1 records   73ms
IPTTLPTRASNISP / OrgCIDRCountryCity
93.191.155.48 3600s linux100.curanet.dk AS48854 team.blue Denmark A/S 93.191.152.0/21 🇩🇰 Denmark —
📧 MX Records1 records   62ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mx.spamfilter.io 46.36.212.34
46.36.212.36
46.36.212.37
46.36.212.38
89.188.78.64
89.188.78.65
89.188.78.66
94.231.106.12		 node4.spamfilter.io
node8.spamfilter.io
node6.spamfilter.io
node7.spamfilter.io
node3.spamfilter.io
node9.spamfilter.io
node10.spamfilter.io
node2.spamfilter.io		 AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
AS48854 team.blue Denmark A/S
📧 Autodiscover / Autoconfig
ServiceCNAME / IP
🔷 Autodiscoverautodiscoverredirect.webexchange.nu → 46.36.209.50
🔶 Autoconfigautoconfig-mf.onlinemail.io → 185.21.40.62
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records2 records   180ms
TXT Record
google-site-verification=rRH0OpsurwMAIfEaT1-T8IA89ilZ6rU_WhflzdVxZfk
v=spf1 include:spf.onlinemail.io include:spf.scannet.dk ~all
✉️ SPF
PolicyRecord (ztrong.dk)
~all (soft fail) v=spf1 include:spf.onlinemail.io include:spf.scannet.dk ~all
📨 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 / DANE1 records   69ms
Service / OwnerTypeCert association
SMTP _25._tcp.mx.spamfilter.io DANE-EE · SPKI · SHA-256 9A25F05F2E322DABDCC9B7A06AB47A2D…
🔐 DNSSEC107ms
CheckResult
Validation Status🔒 Secure
AD Flag (resolver validates)✓ Set
DS Record✓ Found
DNSKEY Record✓ Found
Flagsfully validated
🏷️ SOA0ms
FieldValue
Serial2023091801
Primary NS (MNAME)ns1.curanet.dk
Responsible (RNAME)hostmaster@curanet.dk
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)300s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
57ms
A
73ms
MX
62ms
AAAA
67ms
TXT
180ms
CAA
80ms
HTTPS
50ms
TLSA
69ms
SOA
0ms
MTA-STS
90ms
DNSSEC
107ms
SRV
73ms
Total
718ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-26 14:35:16 718ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-20 08:46:47 2167ms 2 NS 1 A 1 MX 🔒 Secure View
2026-06-17 20:15:57 681ms 2 NS 1 A 1 MX 🔒 Secure View
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