cfu-dk.dk

📜 Historical scan 2026-10-19 20:22:14 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cfu-dk.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 10 January 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 2.106.120.241 is hosted by TDC Holding A/S (AS3292) in Denmark. Mail is handled by .. The zone is DNSSEC-signed and validates, has no 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 37ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 31ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2.106.120.241	3600s	—	AS3292	TDC Holding A/S	2.104.0.0/14	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 36ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	. Null MX — domain accepts no email (RFC 7505)

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	cfu-dk.dk → 2.106.120.241
🔶 Autoconfig	cfu-dk.dk → 2.106.120.241

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 144ms

TXT Record
HARICA-Rm6n41nxw3cySJsQ27Q

✉️ 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#

2 records 36ms

Flags	Tag	Value
0	issue	harica.gr
0	issuewild	harica.gr

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-23 07:15:25

www CNAME	cfu-dk.dk (all on cfu-dk.dk) → 2.106.120.241 (AS3292)
www vs bare domain	Same network cfu-dk.dk: 2.106.120.241 (AS3292) www.cfu-dk.dk: 2.106.120.241 (AS3292)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.cfu-dk.dk	cfu-dk.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

109ms

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

🏷️ SOA#

35ms

Field	Value
Serial	2026101701
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-17 00:29:45

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2007-01-10
Expires	2027-01-31 (98d)

🔗 Same registrant#

38 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
cfu-login.dk	Punktum dk A/S (direct)
cfu-online.dk	Punktum dk A/S (direct)
cfudanmark.dk	Punktum dk A/S (direct)
cfufilm.dk	Punktum dk A/S (direct)
cfulogin.dk	Punktum dk A/S (direct)
cfumedia.dk	Punktum dk A/S (direct)
cfumedie.dk	Punktum dk A/S (direct)
cfuonline.dk	Punktum dk A/S (direct)
cfuskole.dk	Punktum dk A/S (direct)
cfutv.dk	Punktum dk A/S (direct)
danskbogen.dk	Punktum dk A/S (direct)
design-of-tomorrow.dk	Punktum dk A/S (direct)
destorelaeser.dk	Punktum dk A/S (direct)
digitaltmateriale.dk	Punktum dk A/S (direct)
ebogcfu.dk	Punktum dk A/S (direct)
ebogmitcfu.dk	Punktum dk A/S (direct)
eksternlink.dk	Punktum dk A/S (direct)
externlink.dk	Punktum dk A/S (direct)
externtlink.dk	Punktum dk A/S (direct)
extlink.dk	Punktum dk A/S (direct)
hval.dk	Punktum dk A/S (direct)
hwsw.dk	Punktum dk A/S (direct)
laeringsfestivalonline.dk	Punktum dk A/S (direct)
laesebogen.dk	Punktum dk A/S (direct)
læringsfestivalonline.dk	Punktum dk A/S (direct)
med-skolen-i-biografen.dk	Punktum dk A/S (direct)
medskolenibiografen.dk	Punktum dk A/S (direct)
minimaking.dk	Punktum dk A/S (direct)
mitcfu.dk	Punktum dk A/S (direct)
mitcfumail.dk	Punktum dk A/S (direct)
msib.dk	Punktum dk A/S (direct)
programdatateket.dk	Punktum dk A/S (direct)
projektopgaven.dk	Punktum dk A/S (direct)
skolebogmesse.dk	Punktum dk A/S (direct)
skolebogmessen.dk	Punktum dk A/S (direct)
skolemesse.dk	Punktum dk A/S (direct)
viacfu.dk	Punktum dk A/S (direct)
viacfuskole.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

37ms

31ms

36ms

AAAA

36ms

TXT

144ms

CAA

36ms

HTTPS

40ms

TLSA

68ms

SOA

35ms

MTA-STS

53ms

DNSSEC

109ms

SRV

53ms

Total

699ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-23 07:15:25	605ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-19 20:22:14 shown	699ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-18 19:16:21	808ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-17 19:04:44	673ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-10 09:39:04	395ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-09 05:35:02	413ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-08 05:24:06	758ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-05 05:01:19	845ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 04:33:28	1209ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-23 11:09:54	1034ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-24 12:05:10	957ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-16 20:10:39	2858ms	2 NS 1 A 4 MX	🔒 Secure