efsen.dk

📜 Historical scan 2026-06-23 16:08:55 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

efsen.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was registered on 24 February 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 93.191.158.3 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by efsen-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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#

2 records 155ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.dandomain.dk	185.25.141.3 2a02:2339:4006:109::dd	ns.dandomain.dk ns.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.dandomain.dk	2a02:2339:1:108::dd:dd 91.197.248.66	ns2.dandomain.dk ns2.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 151ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.158.3	3600s	linux2.dandomain.dk	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records#

1 records 158ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	efsen-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::7 2a01:111:f403:ca04::a 2a01:111:f403:ca09::b 52.101.68.10 52.101.68.21 52.101.68.32 52.101.68.8	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00307.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 52.98.154.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 321ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:_spf.online.superoffice.com -all

✉️ SPF#

Policy	Record (efsen.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:_spf.online.superoffice.com -all

📨 DMARC#

Policy	Record (_dmarc.efsen.dk)
p=reject	v=DMARC1;p=reject

📬 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 2026-10-09 00:29:26

www	93.191.158.3 (AS48854) (address records, no CNAME)
www vs bare domain	Same network efsen.dk: 93.191.158.3 (AS48854) www.efsen.dk: 93.191.158.3 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-efsen-dk._domainkey.efsen.onmicrosoft.com	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

209ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

151ms

Field	Value
Serial	2026011903
Primary NS (MNAME)	ns.dandomain.dk
Responsible (RNAME)	hostmaster@dandomain.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-13 01:44:10

Field	Value
Registrar	DANDOMAIN A/S
Registered	1997-02-24
Expires	2027-03-31 (165d)

🔗 Same registrant#

1 domain

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
icad-technology.dk	DANDOMAIN A/S

📋 WHOIS#

⏱️ Lookup Timing#

155ms

151ms

158ms

AAAA

143ms

TXT

321ms

CAA

140ms

HTTPS

152ms

TLSA

245ms

SOA

151ms

MTA-STS

141ms

DNSSEC

209ms

SRV

182ms

Total

1152ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-29 18:16:10	865ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 16:39:46	1015ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-23 16:08:55 shown	1152ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 21:37:37	1193ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 16:28:58	2420ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 06:13:12	3429ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 06:10:14	970ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 06:09:47	18874ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 06:00:22	1785ms	2 NS 1 A 1 MX	🔒 Secure