f01.dk

📜 Historical scan 2026-10-13 08:26:38 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

f01.dk is a .dk domain served by 2 nameservers (demi.ns.cloudflare.com, duke.ns.cloudflare.com). It was registered on 8 November 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by mx.f01.dk. 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 33ms

Nameserver	IP addresses	PTR	ASN / ISP
demi.ns.cloudflare.com	108.162.192.95 172.64.32.95 173.245.58.95 2606:4700:50::adf5:3a5f 2803:f800:50::6ca2:c05f 2a06:98c1:50::ac40:205f	demi.ns.cloudflare.com demi.ns.cloudflare.com demi.ns.cloudflare.com demi.ns.cloudflare.com demi.ns.cloudflare.com demi.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
duke.ns.cloudflare.com	108.162.193.110 172.64.33.110 173.245.59.110 2606:4700:58::adf5:3b6e 2803:f800:50::6ca2:c16e 2a06:98c1:50::ac40:216e	duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com duke.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 31ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	mx.f01.dk	139.144.73.109 2a01:7e01::f03c:93ff:fe17:44b0	mx.f01.dk —	AS63949 Akamai Connected Cloud AS63949 Akamai Connected Cloud

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 182ms

TXT Record
google-site-verification=6kSEsidr46syoBukhTsQbDt-QUVKbCMJW1DvPvO1178
v=spf1 a mx a:mx.f01.dk -all

✉️ SPF#

Policy	Record (f01.dk)
-all (hard fail)	v=spf1 a mx a:mx.f01.dk -all

📨 DMARC#

Policy	Record (_dmarc.f01.dk)
p=reject	v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:webmaster@folkmann.it; ruf=mailto:webmaster@folkmann.it;

📬 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 2026-10-16 12:59:17

www	Exists, no address
www vs bare domain	Neither resolves f01.dk: no address www.f01.dk: no address
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
dkim	—	RSA Invalid key data — receivers can't verify signatures

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

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.f01.dk	nJM5Dz4rf9kgBQw-LhrbYa9BWf5pNjyYZfNE2G8KaJ8
TXT	_acme-challenge.f01.dk	q_yj_Leh6AQuhR_-Ztj-_SdeOebrekmoZZmVfm1Yf6w

🔗 TLSA / DANE#

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

🔐 DNSSEC#

59ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

29ms

Field	Value
Serial	2417295190
Primary NS (MNAME)	demi.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 09:09:56

Field	Value
Registrar	Domænehajen ApS
Registered	2021-11-08
Expires	2026-11-07 (21d)

🔗 Same registrant#

4 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
datababs.dk	Domænehajen ApS
f00.dk	Domænehajen ApS
f02.dk	Domænehajen ApS
interbabs.dk	Domænehajen ApS

📋 WHOIS#

⏱️ Lookup Timing#

33ms

35ms

31ms

AAAA

36ms

TXT

182ms

CAA

42ms

HTTPS

34ms

TLSA

59ms

SOA

29ms

MTA-STS

61ms

DNSSEC

59ms

SRV

61ms

Total

592ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 12:59:17	1156ms	2 NS 0 A 1 MX	🔒 Secure
2026-10-14 09:00:30	2307ms	2 NS 0 A 1 MX	🔒 Secure
2026-10-13 08:26:38 shown	592ms	2 NS 0 A 1 MX	🔒 Secure
2026-09-07 04:18:32	1571ms	5 NS 1 A 1 MX	🔓 Insecure
2026-08-25 02:35:44	17373ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-25 22:19:53	4642ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-25 20:56:57	1231ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-17 09:10:43	1658ms	5 NS 1 A 1 MX	🔓 Insecure