3fi.dk

📜 Historical scan 2026-06-20 18:28:42 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3fi.dk is a .dk domain served by 2 nameservers (lisa.ns.cloudflare.com, max.ns.cloudflare.com). It was registered on 23 September 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.39.147 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 78ms

Nameserver	IP addresses	PTR	ASN / ISP
lisa.ns.cloudflare.com	108.162.192.131 172.64.32.131 173.245.58.131 2606:4700:50::adf5:3a83 2803:f800:50::6ca2:c083 2a06:98c1:50::ac40:2083	lisa.ns.cloudflare.com lisa.ns.cloudflare.com lisa.ns.cloudflare.com lisa.ns.cloudflare.com lisa.ns.cloudflare.com lisa.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
max.ns.cloudflare.com	108.162.193.132 172.64.33.132 173.245.59.132 2606:4700:58::adf5:3b84 2803:f800:50::6ca2:c184 2a06:98c1:50::ac40:2184	max.ns.cloudflare.com max.ns.cloudflare.com max.ns.cloudflare.com max.ns.cloudflare.com max.ns.cloudflare.com max.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 78ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.39.147	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.170.208	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 64ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::6815:2793	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:aad0	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 66ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.39.147,172.67.170.208 ech=AEX+DQBB2wAgACCy0Jo1hdYZeSig2z7lYyi/5ZcEzr4tJd+zWnxp2OgmYgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2793,2606:4700:3037::ac43:aad0

📝 TXT Records#

2 records 278ms

TXT Record
8103blxzwtvpg7c0l76t8k44n0cqpr35
MS=ms46068723

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 DMARC#

✗ No DMARC record — mail spoofing not restricted

📬 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 2026-10-15 14:23:41

www	104.21.39.147 172.67.170.208 2606:4700:3033::ac43:aad0 2606:4700:3035::6815:2793 (AS13335) (address records, no CNAME)
www vs bare domain	Same network 3fi.dk: 104.21.39.147 172.67.170.208 2606:4700:3033::ac43:aad0 2606:4700:3035::6815:2793 (AS13335) www.3fi.dk: 104.21.39.147 172.67.170.208 2606:4700:3033::ac43:aad0 2606:4700:3035::6815:2793 (AS13335)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

225ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

97ms

Field	Value
Serial	2405459001
Primary NS (MNAME)	lisa.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-13 07:53:25

Field	Value
Registrar	Simply.com A/S
Registered	2004-09-23
Expires	2027-09-30 (347d)

🔗 Same registrant#

24 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
3-f.dk	Simply.com A/S
3f-a.dk	Simply.com A/S
3f.dk	Simply.com A/S
3fa.dk	Simply.com A/S
3findustri.dk	Simply.com A/S
3finternational.dk	Simply.com A/S
3frus.dk	Simply.com A/S
3ftransport.dk	CURANET A/S
3fudvtst.dk	Simply.com A/S
70300300.dk	Simply.com A/S
dagbladet3f.dk	Simply.com A/S
danskemodel.dk	Simply.com A/S
faellesforbundet.dk	Simply.com A/S
fagforeningstjek.dk	Simply.com A/S
landsklubber.dk	Simply.com A/S
langsoehus.dk	Simply.com A/S
lærlinge.dk	Simply.com A/S
ok-rent.dk	Simply.com A/S
overenskomster.dk	Simply.com A/S
r-u-s.dk	Simply.com A/S
tib.dk	Simply.com A/S
trefu.dk	Simply.com A/S
ungi3f.dk	Simply.com A/S
vaerdigreform.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

78ms

69ms

AAAA

64ms

TXT

278ms

CAA

89ms

HTTPS

66ms

TLSA

86ms

SOA

97ms

MTA-STS

73ms

DNSSEC

225ms

SRV

117ms

Total

714ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 16:41:04	594ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-24 03:00:07	1131ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-23 21:05:27	643ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-20 20:17:09	668ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-18 20:48:45	1234ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-10 02:56:20	683ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-04 02:28:10	924ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-01 19:37:57	968ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-12 06:37:01	8844ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-09 22:48:17	877ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-26 10:05:07	8794ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-25 07:32:41	883ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-20 18:28:42 shown	714ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-16 13:14:31	534ms	2 NS 2 A 0 MX	🔓 Insecure