kolsby.dk

📜 Historical scan 2026-06-20 15:14:51 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kolsby.dk is a .dk domain served by 2 nameservers (cass.ns.cloudflare.com, greg.ns.cloudflare.com). It was registered on 13 November 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.16.127 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, has no DMARC policy and is reachable over IPv6. 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 145ms

Nameserver	IP addresses	PTR	ASN / ISP
cass.ns.cloudflare.com	108.162.192.81 172.64.32.81 173.245.58.81 2606:4700:50::adf5:3a51 2803:f800:50::6ca2:c051 2a06:98c1:50::ac40:2051	cass.ns.cloudflare.com cass.ns.cloudflare.com cass.ns.cloudflare.com cass.ns.cloudflare.com cass.ns.cloudflare.com cass.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
greg.ns.cloudflare.com	108.162.193.115 172.64.33.115 173.245.59.115 2606:4700:58::adf5:3b73 2803:f800:50::6ca2:c173 2a06:98c1:50::ac40:2173	greg.ns.cloudflare.com greg.ns.cloudflare.com greg.ns.cloudflare.com greg.ns.cloudflare.com greg.ns.cloudflare.com greg.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 102ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.16.127	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.212.180	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 144ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:107f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:d4b4	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 99ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.16.127,172.67.212.180 ech=AEX+DQBBzAAgACDuL1U47DdoVdkUXB7C9EoHNR/ZnpfvKlAFlQbiOxAaFQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:107f,2606:4700:3037::ac43:d4b4

📝 TXT Records#

📝

No TXT records found

✉️ 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#

✗ No CAA records — any CA may issue certificates

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-10 18:21:59

www	104.21.16.127 172.67.212.180 2606:4700:3033::ac43:d4b4 2606:4700:3037::6815:107f (AS13335) (address records, no CNAME)
www vs bare domain	Same network kolsby.dk: 104.21.16.127 172.67.212.180 2606:4700:3033::ac43:d4b4 2606:4700:3037::6815:107f (AS13335) www.kolsby.dk: 104.21.16.127 172.67.212.180 2606:4700:3033::ac43:d4b4 2606:4700:3037::6815:107f (AS13335)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

244ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

133ms

Field	Value
Serial	2406850560
Primary NS (MNAME)	cass.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-09 17:59:36

Field	Value
Registrar	Netsite A/S
Registered	2024-11-13
Expires	2026-11-12 (19d)

📋 WHOIS#

⏱️ Lookup Timing#

145ms

102ms

153ms

AAAA

144ms

TXT

422ms

CAA

137ms

HTTPS

99ms

TLSA

272ms

SOA

133ms

MTA-STS

137ms

DNSSEC

244ms

SRV

192ms

Total

1373ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-10 18:21:59	372ms	2 NS 2 A 0 MX	🔓 Insecure
2026-10-09 17:23:48	1637ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-20 15:15:18	652ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-18 09:58:28	1141ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-12 16:57:39	1104ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-19 05:01:42	673ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-28 09:32:26	757ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-20 15:14:51 shown	1373ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-17 14:17:44	1794ms	2 NS 2 A 0 MX	🔓 Insecure