kosterco.dk

📜 Historical scan 2026-06-27 22:14:05 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

kosterco.dk is a .dk domain served by 2 nameservers (peaches.ns.cloudflare.com, steven.ns.cloudflare.com). It was registered on 7 February 2017 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.74.51 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 285ms

Nameserver	IP addresses	PTR	ASN / ISP
peaches.ns.cloudflare.com	108.162.194.239 162.159.38.239 172.64.34.239 2606:4700:50::a29f:26ef 2803:f800:50::6ca2:c2ef 2a06:98c1:50::ac40:22ef	peaches.ns.cloudflare.com peaches.ns.cloudflare.com peaches.ns.cloudflare.com peaches.ns.cloudflare.com peaches.ns.cloudflare.com peaches.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
steven.ns.cloudflare.com	108.162.195.17 162.159.44.17 172.64.35.17 2606:4700:58::a29f:2c11 2803:f800:50::6ca2:c311 2a06:98c1:50::ac40:2311	steven.ns.cloudflare.com steven.ns.cloudflare.com steven.ns.cloudflare.com steven.ns.cloudflare.com steven.ns.cloudflare.com steven.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 312ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.74.51	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.155.64	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 279ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:4a33	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:9b40	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 253ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.74.51,172.67.155.64 ech=AEX+DQBBFgAgACAHLebld4IUA+gNDxH8mXA4AAKUnLTf/3QyY04Sn3LacAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:4a33,2606:4700:3035::ac43:9b40

📝 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 2026-10-14 04:51:57

www	104.21.74.51 172.67.155.64 2606:4700:3031::ac43:9b40 2606:4700:3034::6815:4a33 (AS13335) (address records, no CNAME)
www vs bare domain	Same network kosterco.dk: 104.21.74.51 172.67.155.64 2606:4700:3031::ac43:9b40 2606:4700:3034::6815:4a33 (AS13335) www.kosterco.dk: 104.21.74.51 172.67.155.64 2606:4700:3031::ac43:9b40 2606:4700:3034::6815:4a33 (AS13335)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

380ms

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

🏷️ SOA#

293ms

Field	Value
Serial	2403968225
Primary NS (MNAME)	peaches.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-07 14:19:54

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2017-02-07
Expires	2027-02-28 (129d)

📋 WHOIS#

⏱️ Lookup Timing#

285ms

312ms

314ms

AAAA

279ms

TXT

507ms

CAA

280ms

HTTPS

253ms

TLSA

165ms

SOA

293ms

MTA-STS

295ms

DNSSEC

380ms

SRV

463ms

Total

1764ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-24 01:44:57	628ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-08 20:30:54	632ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-25 00:16:17	567ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-24 15:30:01	785ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-11 12:17:31	1673ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-27 22:14:05 shown	1764ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-18 03:32:40	613ms	2 NS 2 A 0 MX	🔓 Insecure