deffner.dk
📜 Historical scan 2026-08-19 10:44:28  ·  ← Latest scan
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers2 records   236ms
NameserverIP addressesPTRASN / ISP
dns1.deffner.dk 51.77.42.31 ns3144747.ip-51-77-42.eu AS16276 OVH SAS
dns2.deffner.dk 51.38.157.57 ip57.ip-51-38-157.eu AS16276 OVH SAS
🌍 A Records1 records   206ms
IPTTLPTRASNISP / OrgCIDRCountryCity
51.77.42.31 86400s ns3144747.ip-51-77-42.eu AS16276 OVH SAS 51.77.0.0/16 🇵🇱 Poland Warsaw
📧 MX Records1 records   215ms
PriorityTTLMail ServerIP addressesPTRASN
10 86400s mail.deffner.dk 51.77.42.31 ns3144747.ip-51-77-42.eu AS16276 OVH SAS
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
🔌 SRV Records1 records   328ms
ServicePriorityWeightPortTarget
_imaps._tcp 0 0 993 deffner.dk
📝 TXT Records1 records   830ms
TXT Record
v=spf1 include:_spf.mailersend.net +a +mx +a:ns3144747.ip-51-77-42.eu -all
✉️ SPF
PolicyRecord (deffner.dk)
-all (hard fail) v=spf1 include:_spf.mailersend.net +a +mx +a:ns3144747.ip-51-77-42.eu -all
📨 DMARC
PolicyRecord (_dmarc.deffner.dk)
p=quarantine v=DMARC1; p=quarantine; adkim=s; aspf=s
📬 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
TXT _acme-challenge.deffner.dk vitUCkh2B2zvc0vii3LWHydBSFXZIKZHR767hOwdLE0
🔗 TLSA / DANE
✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)
🔐 DNSSEC415ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer
🏷️ SOA0ms
FieldValue
Serial2026081901
Primary NS (MNAME)dns2.deffner.dk
Responsible (RNAME)emildruzkowski@gmail.com
Refresh10800s
Retry3600s
Expire1209600s
Minimum (neg-cache TTL)10800s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
236ms
A
206ms
MX
215ms
AAAA
249ms
TXT
830ms
CAA
179ms
HTTPS
267ms
TLSA
311ms
SOA
0ms
MTA-STS
300ms
DNSSEC
415ms
SRV
328ms
Total
4499ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-08-27 14:08:08 1783ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-08-25 20:40:01 1867ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-08-20 14:28:06 9674ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-08-19 10:44:28 4499ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-07-03 05:31:19 2157ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-28 03:53:59 1229ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-20 20:26:31 1444ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-17 01:31:07 617ms 2 NS 1 A 1 MX 🔓 Insecure View
2026-06-17 01:31:07 1625ms 2 NS 1 A 1 MX ⚠️ Bogus View
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