certus.dk
📜 Historical scan 2026-06-27 13:49:59  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   215ms
NameserverIP addressesPTRASN / ISP
ns1.seo-linuxpl.com 46.4.105.172
94.152.254.111		 static.172.105.4.46.clients.your-server.de
ns1.cyberfolks.pl		 AS24940 Hetzner Online GmbH
AS58321 Oxylion Sp. z o.o.
ns2.seo-linuxpl.com 94.152.255.111 ns2.cyberfolks.pl AS58321 Oxylion Sp. z o.o.
🌍 A Records1 records   214ms
IPTTLPTRASNISP / OrgCIDRCountryCity
195.78.67.51 300s s173.cyber-folks.pl AS41079 Cyber_Folks S.A. 195.78.66.0/23 🇵🇱 Poland —
📧 MX Records1 records   236ms
PriorityTTLMail ServerIP addressesPTRASN
10 300s mail.certus.dk 195.78.67.51 s173.cyber-folks.pl AS41079 Cyber_Folks S.A.
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   1295ms
TXT Record
v=spf1 a mx ip4:195.78.67.51 include:_spf.cyberfolks.pl -all
✉️ SPF
PolicyRecord (certus.dk)
-all (hard fail) v=spf1 a mx ip4:195.78.67.51 include:_spf.cyberfolks.pl -all
📨 DMARC
PolicyRecord (_dmarc.certus.dk)
p=none (monitor only) v=DMARC1; p=none; sp=none
📬 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)
🔐 DNSSEC684ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA183ms
FieldValue
Serial2024120500
Primary NS (MNAME)ns1.seo-linuxpl.com
Responsible (RNAME)hostmaster@certus.dk
Refresh14400s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)3600s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
215ms
A
214ms
MX
236ms
AAAA
273ms
TXT
1295ms
CAA
254ms
HTTPS
259ms
TLSA
445ms
SOA
183ms
MTA-STS
449ms
DNSSEC
684ms
SRV
1031ms
Total
2854ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 05:50:17 13521ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-08-02 16:16:25 25951ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-27 13:49:59 2854ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-27 08:27:57 906ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-23 18:24:17 1140ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-16 20:10:38 6407ms 2 NS 1 A 1 MX 🔓 Insecure View
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