3fa.dk

📜 Historical scan 2026-09-25 07:09:54 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3fa.dk is a .dk domain served by 2 nameservers (lisa.ns.cloudflare.com, max.ns.cloudflare.com). It was registered on 2 July 2004 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.37.93 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, publishes a 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 30ms

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 30ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.37.93	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.206.217	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 33ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:255d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:ced9	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 30ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.37.93,172.67.206.217 ech=AEX+DQBBRwAgACDa4MZBhpIbg79QlzivHh6VMzOryIkPAWD3biwyXkaQBAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:255d,2606:4700:3035::ac43:ced9

📝 TXT Records#

1 records 166ms

TXT Record
v=spf1 -all

✉️ SPF#

Policy	Record (3fa.dk)
-all (hard fail)	v=spf1 -all

📨 DMARC#

Policy	Record (_dmarc.3fa.dk)
p=reject	v=DMARC1; p=reject; adkim=s; aspf=s;

📬 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 14:48:35

www	104.21.37.93 172.67.206.217 2606:4700:3030::6815:255d 2606:4700:3035::ac43:ced9 (AS13335) (address records, no CNAME)
www vs bare domain	Same network 3fa.dk: 104.21.37.93 172.67.206.217 2606:4700:3030::6815:255d 2606:4700:3035::ac43:ced9 (AS13335) www.3fa.dk: 104.21.37.93 172.67.206.217 2606:4700:3030::6815:255d 2606:4700:3035::ac43:ced9 (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 0/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.3fa.dk	gXPW1HtUJ82C5bZSu6BVu8oArnv9XKiGEco2oNJCFmo
TXT	_acme-challenge.3fa.dk	vk_Su3u1mx9EBskdz1ale_WIWOt2r3Om7ewPUzWFrF4

🔗 TLSA / DANE#

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

🔐 DNSSEC#

109ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2415734025
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 2026-10-14 04:01:01

Field	Value
Registrar	Simply.com A/S
Registered	2004-07-02
Expires	2027-07-31 (287d)

🔗 Same registrant#

18 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.dk	Simply.com A/S
3fi.dk	Simply.com A/S
3findustri.dk	Simply.com A/S
3finternational.dk	Simply.com A/S
3ftransport.dk	CURANET A/S
3fudvtst.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
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
vaerdigreform.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

30ms

40ms

AAAA

33ms

TXT

166ms

CAA

28ms

HTTPS

30ms

TLSA

51ms

SOA

0ms

MTA-STS

58ms

DNSSEC

109ms

SRV

57ms

Total

1064ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 14:48:35	419ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-30 03:28:43	404ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-26 07:24:35	1110ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-25 07:09:54 shown	1064ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-24 06:51:43	588ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-28 01:57:02	8910ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-27 01:13:47	855ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-24 20:56:24	679ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-23 17:22:03	1192ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 12:45:53	473ms	2 NS 2 A 0 MX	🔓 Insecure