f00.dk

Records from scan: 2026-10-13 06:55:13 · 2947ms total · last checked 2026-10-16 16:22 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

f00.dk is a .dk domain served by 2 nameservers (demi.ns.cloudflare.com, duke.ns.cloudflare.com). It was registered on 6 February 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.94.181 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mx.f00.dk. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 122ms

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#

2 records 107ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.94.181	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.139.23	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 82ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	mx.f00.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)#

2 records 136ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:5eb5	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3032::ac43:8b17	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 131ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.94.181,172.67.139.23 ech=AEX+DQBBTwAgACC205Wjks+Qoou3iMwXiU17qxq6LQ2sKjQK6jhJDL9WMQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:5eb5,2606:4700:3032::ac43:8b17

📝 TXT Records#

2 records 261ms

TXT Record
google-site-verification=gpVYjPcXTHLRWwQxeutgNTRvMBmyVFWByg9tLaGvbLI
v=spf1 a mx a:mx.f00.dk -all

✉️ SPF#

Policy	Record (f00.dk)
-all (hard fail)	v=spf1 a mx a:mx.f00.dk -all

📨 DMARC#

Policy	Record (_dmarc.f00.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#

checked 2026-10-13 06:55:13

www	Exists, no address
www vs bare domain	www does not resolve f00.dk: 104.21.94.181 172.67.139.23 2606:4700:3031::6815:5eb5 2606:4700:3032::ac43:8b17 (AS13335) www.f00.dk: no address (all like this)
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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

160ms

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

🏷️ SOA#

84ms

Field	Value
Serial	2417318229
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 07:28:43

Field	Value
Registrar	Domænehajen ApS
Registered	2021-02-06
Expires	2027-02-28 (134d)

🔗 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
f01.dk	Domænehajen ApS
f02.dk	Domænehajen ApS
interbabs.dk	Domænehajen ApS

📋 WHOIS#

⏱️ Lookup Timing#

122ms

107ms

82ms

AAAA

136ms

TXT

261ms

CAA

87ms

HTTPS

131ms

TLSA

561ms

SOA

84ms

MTA-STS

108ms

DNSSEC

160ms

SRV

151ms

Total

2947ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 06:55:13 shown	2947ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-30 20:39:30	2060ms	5 NS 1 A 1 MX	🔓 Insecure
2026-09-24 00:43:32	2663ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-28 19:35:35	1556ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-22 08:42:55	1381ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-20 00:48:56	8786ms	5 NS 1 A 1 MX	🔓 Insecure
2026-06-17 09:10:29	2061ms	5 NS 1 A 1 MX	🔓 Insecure