claus-jacobsen.dk

📜 Historical scan 2026-06-25 06:10:32 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

claus-jacobsen.dk is a .dk domain served by 2 nameservers (mimi.ns.cloudflare.com, sam.ns.cloudflare.com). It was registered on 28 January 2026 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.25.112 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 134ms

Nameserver	IP addresses	PTR	ASN / ISP
mimi.ns.cloudflare.com	108.162.192.203 172.64.32.203 173.245.58.203 2606:4700:50::adf5:3acb 2803:f800:50::6ca2:c0cb 2a06:98c1:50::ac40:20cb	mimi.ns.cloudflare.com mimi.ns.cloudflare.com mimi.ns.cloudflare.com mimi.ns.cloudflare.com mimi.ns.cloudflare.com mimi.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
sam.ns.cloudflare.com	108.162.193.141 172.64.33.141 173.245.59.141 2606:4700:58::adf5:3b8d 2803:f800:50::6ca2:c18d 2a06:98c1:50::ac40:218d	sam.ns.cloudflare.com sam.ns.cloudflare.com sam.ns.cloudflare.com sam.ns.cloudflare.com sam.ns.cloudflare.com sam.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 136ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.25.112	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.134.18	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 134ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:8612	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::6815:1970	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 103ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.25.112,172.67.134.18 ech=AEX+DQBBfQAgACAPYHUP40ZgadawX6FKD1quNrE+hARShnirnGXE2oDmNAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:8612,2606:4700:3033::6815:1970

📝 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 06:37:51

www	104.21.25.112 172.67.134.18 2606:4700:3035::ac43:8612 2606:4700:3037::6815:1970 (AS13335) (address records, no CNAME)
www vs bare domain	Same network claus-jacobsen.dk: 104.21.25.112 172.67.134.18 2606:4700:3035::ac43:8612 2606:4700:3037::6815:1970 (AS13335) www.claus-jacobsen.dk: 104.21.25.112 172.67.134.18 2606:4700:3035::ac43:8612 2606:4700:3037::6815:1970 (AS13335)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

183ms

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

🏷️ SOA#

119ms

Field	Value
Serial	2406675148
Primary NS (MNAME)	mimi.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-03 13:39:13

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2026-01-28
Expires	2027-01-27 (96d)

📋 WHOIS#

⏱️ Lookup Timing#

134ms

136ms

99ms

AAAA

134ms

TXT

273ms

CAA

151ms

HTTPS

103ms

TLSA

427ms

SOA

119ms

MTA-STS

105ms

DNSSEC

183ms

SRV

152ms

Total

1487ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-06 14:51:40	2059ms	2 NS 2 A 0 MX	🔓 Insecure
2026-10-03 13:23:16	503ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-10 08:52:50	3239ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-06 14:11:23	981ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-25 06:10:32 shown	1487ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-23 18:40:15	1170ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 21:11:10	1190ms	2 NS 2 A 0 MX	🔓 Insecure