sfi.dk

📜 Historical scan 2026-10-03 13:33:43 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

sfi.dk is a .dk domain served by 2 nameservers (ns6.sitnet.dk, ns7.sitnet.dk). It was registered on 22 September 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 23.102.57.134 is hosted by Microsoft Corporation (AS8075) in Ireland. 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 215ms

Nameserver	IP addresses	PTR	ASN / ISP
ns6.sitnet.dk	107.162.234.197 2604:e180:1071::3:1	— —	AS55002 F5, Inc. AS55002 F5, Inc.
ns7.sitnet.dk	107.162.176.221 2604:e180:1071::ffff:6ba2:b0dd	— —	AS55002 F5, Inc. AS55002 F5, Inc.

🌍 A Records#

1 records 89ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
23.102.57.134	3600s	—	AS8075	Microsoft Corporation	23.102.0.0/16	🇮🇪 Ireland	Dublin

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

4 records 585ms

TXT Record
MS=ms48774451
Socialforskningsinstituttet
v=spf1 -all
vMFoleAUzANdrsl57KWnUYwhscYfbqoJm/evGYKDf3R9SLE7ucaoKKY9GcEojgUWP45PugY0HrAyQJGlnMDbhg==

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.sfi.dk)
p=reject	v=DMARC1; p=reject; sp=reject; rua=mailto:tcod1eh2@ag.eu.dmarcadvisor.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 2026-10-20 00:59:14

www CNAME	5950sf.skybrud.net (all on skybrud.net) → 13.94.250.214 (AS8075)
www vs bare domain	Same network sfi.dk: 23.102.57.134 (AS8075) www.sfi.dk: 13.94.250.214 (AS8075)
Wildcard	No
Denial of existence	NSEC3 · 10 iterations · 12-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.sfi.dk	5jd6x7g4v0556tc9b3f3tntdv2rd64m6

🔗 TLSA / DANE#

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

🔐 DNSSEC#

165ms

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

🏷️ SOA#

84ms

Field	Value
Serial	34717
Primary NS (MNAME)	ns6.sitnet.dk
Responsible (RNAME)	hostmaster@statens-it.dk
Refresh	10800s
Retry	1080s
Expire	2419200s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-20 01:14:41

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-09-22
Expires	2027-09-30 (344d)

🔗 Same registrant#

5 domains

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
eco.dk	Punktum dk A/S (direct)
kora.dk	Punktum dk A/S (direct)
piaac.dk	Punktum dk A/S (direct)
velfaerd.dk	Punktum dk A/S (direct)
vive.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

215ms

89ms

72ms

AAAA

98ms

TXT

585ms

CAA

216ms

HTTPS

78ms

TLSA

184ms

SOA

84ms

MTA-STS

147ms

DNSSEC

165ms

SRV

334ms

Total

1272ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-20 00:59:14	17347ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-18 23:43:11	9892ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-17 22:56:21	18124ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-16 22:10:43	4785ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-15 21:54:33	4729ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-15 21:42:46	1154ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-13 19:14:09	6148ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-12 12:13:12	17355ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-11 10:59:22	17233ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-10 09:35:57	1196ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-08 14:57:50	17558ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-07 14:53:31	10025ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-06 13:53:04	5112ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-05 13:46:03	9435ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-04 13:35:30	17924ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-03 13:33:43 shown	1272ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-02 13:31:17	1213ms	2 NS 1 A 0 MX	🔒 Secure
2026-10-01 13:29:18	18841ms	2 NS 1 A 0 MX	🔒 Secure
2026-09-30 13:17:15	5203ms	2 NS 1 A 0 MX	🔒 Secure
2026-09-30 08:45:45	1277ms	2 NS 1 A 0 MX	🔒 Secure
2026-09-29 08:33:43	17441ms	2 NS 1 A 0 MX	🔒 Secure
2026-09-28 07:45:04	18625ms	2 NS 1 A 0 MX	🔒 Secure
2026-09-27 07:33:01	9397ms	2 NS 1 A 0 MX	🔒 Secure
2026-09-26 07:19:04	62500ms	2 NS 1 A 0 MX	🔒 Secure
2026-09-25 06:59:59	12671ms	2 NS 1 A 0 MX	🔒 Secure