open.dk

📜 Historical scan 2026-06-17 11:41:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

open.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 18 March 1997 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 92.205.1.133 is hosted by Host Europe GmbH (AS21499) in France. Mail is handled by mail.open.dk. 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 2036ms

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 2036ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
92.205.1.133	—	133.1.205.92.host.secureserver.net	AS21499	Host Europe GmbH	92.205.0.0/19	🇫🇷 France	Strasbourg

📧 MX Records#

1 records 2040ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	mail.open.dk	92.205.1.133	133.1.205.92.host.secureserver.net	AS21499 Host Europe GmbH

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 2214ms

TXT Record
v=spf1 include:_spf.google.com ~all

✉️ SPF#

Policy	Record (open.dk)
~all (soft fail)	v=spf1 include:_spf.google.com ~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#

latest probe, not this scan · checked 2026-10-09 11:59:24

www CNAME	open.dk (all on open.dk) → 92.205.1.133 (AS21499)
www vs bare domain	Same network open.dk: 92.205.1.133 (AS21499) www.open.dk: 92.205.1.133 (AS21499)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

1366ms

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

🏷️ SOA#

2045ms

Field	Value
Serial	2026032501
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 2026-10-12 16:39:49

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1997-03-18
Expires	2027-03-31 (161d)

🔗 Same registrant#

3 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
hannahbanana.dk	Punktum dk A/S (direct)
opensolutions.dk	Punktum dk A/S (direct)
teleport.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

2036ms

2040ms

AAAA

2029ms

TXT

2214ms

CAA

2036ms

HTTPS

2050ms

TLSA

131ms

SOA

2045ms

MTA-STS

2032ms

DNSSEC

1366ms

SRV

0ms

Total

2786ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 11:59:24	913ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-03 05:06:55	776ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 02:16:42	616ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-04 08:57:05	510ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 20:51:22	755ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 02:51:17	728ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-03 19:50:43	2929ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-28 04:08:10	778ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-23 01:24:03	4742ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 11:41:46 shown	2786ms	2 NS 1 A 1 MX	🔒 Secure