jefferson.dk

📜 Historical scan 2026-07-31 23:18:45 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

jefferson.dk is a .dk domain served by 4 nameservers (ns1.eurodns.com, ns2.eurodns.com, ns3.eurodns.com and 1 more). It was registered on 14 September 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by cluster8.eu.messagelabs.com, cluster8a.eu.messagelabs.com. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

4 records 169ms

Nameserver	IP addresses	PTR	ASN / 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 Records#

2 records 196ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
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 Records#

1 records 512ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (jefferson.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-07 15:40:31

www	Exists, no address
www vs bare domain	Neither resolves jefferson.dk: no address www.jefferson.dk: no address
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

265ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

0ms

Field	Value
Serial	2026072901
Primary NS (MNAME)	ns1.eurodns.com
Responsible (RNAME)	hostmaster@eurodns.com
Refresh	86400s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-10 20:05:09

Field	Value
Registrar	Eurodns S.A
Registered	1998-09-14
Expires	2027-09-30 (348d)

📋 WHOIS#

⏱️ Lookup Timing#

169ms

187ms

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 At	Duration	Records	DNSSEC
2026-09-29 14:44:56	879ms	4 NS 0 A 2 MX	🔓 Insecure
2026-07-31 23:18:45 shown	1928ms	4 NS 0 A 2 MX	🔓 Insecure
2026-06-30 18:18:30	1037ms	4 NS 0 A 2 MX	🔓 Insecure
2026-06-24 11:51:23	989ms	4 NS 0 A 2 MX	🔓 Insecure
2026-06-21 07:16:14	1076ms	4 NS 0 A 2 MX	🔓 Insecure
2026-06-20 16:36:23	914ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 11:34:05	618ms	4 NS 0 A 2 MX	🔓 Insecure
2026-06-18 03:53:16	1714ms	4 NS 0 A 2 MX	🔓 Insecure