filt.dk

Records from scan: 2026-10-01 08:29:30 · 363ms total · last checked 2026-10-17 07:55 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

filt.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 31 January 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.109.50 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by mx1.onlinemail.io, mx2.onlinemail.io. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. 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 35ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.109.50	3600s	web5.curanet.dk	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

2 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mx1.onlinemail.io	185.21.42.12	mx1.onlinemail.io	AS48854 team.blue Denmark A/S
20	3600s	mx2.onlinemail.io	46.36.208.16	mx2.onlinemail.io	AS48854 team.blue Denmark A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover-mf.onlinemail.io → 185.21.40.62
🔶 Autoconfig	autoconfig-mf.onlinemail.io → 185.21.40.62

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 130ms

TXT Record
google-site-verification=SyAdp2oZpDl_fDBQC4C7G_6Ie2VMwRFdXAOUb9lvSLY
v=spf1 include:spf.onlinemail.io ?all

✉️ SPF#

Policy	Record (filt.dk)
?all (neutral)	v=spf1 include:spf.onlinemail.io ?all

📨 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#

checked 2026-10-01 08:29:30

www	Address record (no CNAME)
Wildcard	Yes: any name under the zone resolves
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: ?all

warn "?all" is neutral: it gives receivers no guidance, much like having no SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

47ms

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

🏷️ SOA#

38ms

Field	Value
Serial	2021091003
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-06 19:42:05

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-01-31
Expires	2027-03-31 (164d)

📋 WHOIS#

⏱️ Lookup Timing#

35ms

30ms

AAAA

36ms

TXT

130ms

CAA

37ms

HTTPS

32ms

TLSA

45ms

SOA

38ms

MTA-STS

34ms

DNSSEC

47ms

SRV

47ms

Total

363ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 08:29:30 shown	363ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-21 06:01:57	469ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-26 13:26:08	536ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-22 23:59:44	904ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 10:05:47	602ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-17 10:03:45	733ms	2 NS 1 A 2 MX	🔒 Secure