jefferson.dk
Last scanned: 2026-07-31 23:18:45  ·  1928ms total
⬇ Zone File 📜 Record History ⚡ Scan Now
🖥️ Nameservers4 records   169ms
NameserverIP addressesPTRASN / ISP
ns1.eurodns.com 199.167.66.107
2610:1c8:b002::107		 ns1.eurodns.com
ns1.eurodns.com		 AS23393 NuCDN LLC
AS23393 NuCDN LLC
ns2.eurodns.com 104.37.178.107
2610:1c8:b001::107		 ns2.eurodns.com
ns2.eurodns.com		 AS23393 NuCDN LLC
AS23393 NuCDN LLC
ns3.eurodns.com 199.167.66.108
2610:1c8:b002::108		 ns3.eurodns.com
ns3.eurodns.com		 AS23393 NuCDN LLC
AS23393 NuCDN LLC
ns4.eurodns.com 104.37.178.108
2610:1c8:b001::108		 ns4.eurodns.com
ns4.eurodns.com		 AS23393 NuCDN LLC
AS23393 NuCDN LLC
🌍 A Records
🌍
No A records found
📧 MX Records2 records   196ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s cluster8.eu.messagelabs.com 195.245.230.195
195.245.230.198
195.245.231.66
195.245.231.71
85.158.142.211
85.158.142.216		 mail853.messagelabs.com
mail856.messagelabs.com
mail871.messagelabs.com
mail875.messagelabs.com
mail835.messagelabs.com
mail840.messagelabs.com		 AS396982 Google LLC
AS396982 Google LLC
AS396982 Google LLC
AS396982 Google LLC
AS396982 Google LLC
AS396982 Google LLC
20 3600s cluster8a.eu.messagelabs.com 34.91.159.228 228.159.91.34.bc.googleusercontent.com AS396982 Google LLC
🔷 AAAA Records (IPv6)
✗ No AAAA records — IPv6 not configured
🔐 HTTPS Records
✗ No HTTPS RR — no SVCB/HTTPS service binding
📝 TXT Records1 records   512ms
TXT Record
v=spf1 -all
✉️ SPF
PolicyRecord (jefferson.dk)
-all (hard fail) v=spf1 -all
📨 DMARC
PolicyRecord (_dmarc.jefferson.dk)
p=reject v=DMARC1; p=reject; rua=mailto:6007ede9667d0@dmarc.centerasecurity.com;
📬 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)
🔐 DNSSEC265ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsresolution failed: ncache nxrrset
🏷️ SOA0ms
FieldValue
Serial2026072901
Primary NS (MNAME)ns1.eurodns.com
Responsible (RNAME)hostmaster@eurodns.com
Refresh86400s
Retry7200s
Expire604800s
Minimum (neg-cache TTL)86400s
📋 Registration
✗ No registration data — collected automatically when SOA serial changes
📋 WHOIS
⏱️ Lookup Timing
NS
169ms
A
187ms
MX
196ms
AAAA
185ms
TXT
512ms
CAA
181ms
HTTPS
186ms
TLSA
148ms
SOA
0ms
MTA-STS
205ms
DNSSEC
265ms
SRV
233ms
Total
1928ms
🕐 Scan History
Scanned AtDurationRecordsDNSSEC
2026-07-31 23:18:45 1928ms 4 NS 0 A 2 MX 🔓 Insecure View
2026-06-30 18:18:30 1037ms 4 NS 0 A 2 MX 🔓 Insecure View
2026-06-24 11:51:23 989ms 4 NS 0 A 2 MX 🔓 Insecure View
2026-06-21 07:16:14 1076ms 4 NS 0 A 2 MX 🔓 Insecure View
2026-06-20 16:36:23 914ms 0 NS 0 A 0 MX ❓ Unknown View
2026-06-20 11:34:05 618ms 4 NS 0 A 2 MX 🔓 Insecure View
2026-06-18 03:53:16 1714ms 4 NS 0 A 2 MX 🔓 Insecure View
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