colsen.dk

📜 Historical scan 2026-09-30 13:01:16 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

colsen.dk is a .dk domain served by 2 nameservers (ns.dandomain.dk, ns2.dandomain.dk). It was registered on 6 January 2006 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 51.158.157.190 is hosted by Scaleway SAS (AS12876) in The Netherlands. Mail is handled by mail.artur.de. 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 26ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.dandomain.dk	185.25.141.3 2a02:2339:4006:109::dd	ns.dandomain.dk ns.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.dandomain.dk	2a02:2339:1:108::dd:dd 91.197.248.66	ns2.dandomain.dk ns2.dandomain.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 28ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
51.158.157.190	3600s	mail.artur.de	AS12876	Scaleway SAS	51.158.0.0/15	🇳🇱 The Netherlands	Haarlem

📧 MX Records#

1 records 30ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mail.artur.de	51.158.157.190	mail.artur.de	AS12876 Scaleway SAS

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 133ms

TXT Record
v=spf1 a:gnatmail.com a:mail.artur.de ip4:51.158.157.190 -all

✉️ SPF#

Policy	Record (colsen.dk)
-all (hard fail)	v=spf1 a:gnatmail.com a:mail.artur.de ip4:51.158.157.190 -all

📨 DMARC#

Policy	Record (_dmarc.colsen.dk)
p=none (monitor only)	v=DMARC1; p=none

📬 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 2026-10-04 10:50:54

www CNAME	colsen.dk (all on colsen.dk)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
dkim	—	RSA · ~2048 bit

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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

60ms

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

🏷️ SOA#

27ms

Field	Value
Serial	2026050302
Primary NS (MNAME)	ns.dandomain.dk
Responsible (RNAME)	hostmaster@dandomain.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-10 05:56:11

Field	Value
Registrar	DANDOMAIN A/S
Registered	2006-01-06
Expires	2027-01-31 (104d)

📋 WHOIS#

⏱️ Lookup Timing#

26ms

28ms

30ms

AAAA

48ms

TXT

133ms

CAA

30ms

HTTPS

27ms

TLSA

114ms

SOA

27ms

MTA-STS

52ms

DNSSEC

60ms

SRV

51ms

Total

459ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-04 10:50:54	423ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 13:01:16 shown	459ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-26 02:12:54	557ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-18 08:27:00	551ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-30 11:05:57	711ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-27 04:41:39	654ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 21:50:43	530ms	2 NS 1 A 1 MX	🔒 Secure