4thomsen.dk

📜 Historical scan 2026-09-19 14:45:02 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

4thomsen.dk is a .dk domain served by 2 nameservers (justin.ns.cloudflare.com, marjory.ns.cloudflare.com). It was registered on 26 May 2025 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.224.18.200 is hosted by Netsite A/S (AS205206) in Denmark. Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. The zone is not DNSSEC-signed, 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 110ms

Nameserver	IP addresses	PTR	ASN / ISP
justin.ns.cloudflare.com	108.162.193.187 172.64.33.187 173.245.59.187 2606:4700:58::adf5:3bbb 2803:f800:50::6ca2:c1bb 2a06:98c1:50::ac40:21bb	justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com justin.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
marjory.ns.cloudflare.com	108.162.192.193 172.64.32.193 173.245.58.193 2606:4700:50::adf5:3ac1 2803:f800:50::6ca2:c0c1 2a06:98c1:50::ac40:20c1	marjory.ns.cloudflare.com marjory.ns.cloudflare.com marjory.ns.cloudflare.com marjory.ns.cloudflare.com marjory.ns.cloudflare.com marjory.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

1 records 128ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.224.18.200	300s	parked.netsite.host	AS205206	Netsite A/S	185.224.16.0/22	🇩🇰 Denmark	—

📧 MX Records#

2 records 132ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.protonmail.ch	176.119.200.128 185.205.70.128 185.70.42.128	mail.protonmail.ch mail.protonmail.ch mail.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG
20	300s	mailsec.protonmail.ch	176.119.200.129 185.205.70.129 185.70.42.129	mailsec.protonmail.ch mailsec.protonmail.ch mailsec.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 288ms

TXT Record
protonmail-verification=bf7cf8d61e01c23b2ac458259c5e67af7babfd03
v=spf1 include:_spf.protonmail.ch ~all

✉️ SPF#

Policy	Record (4thomsen.dk)
~all (soft fail)	v=spf1 include:_spf.protonmail.ch ~all

📨 DMARC#

Policy	Record (_dmarc.4thomsen.dk)
p=quarantine	v=DMARC1; p=quarantine

📬 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 2026-10-12 14:31:37

www	185.224.18.200 (AS205206) (address records, no CNAME)
www vs bare domain	Same network 4thomsen.dk: 185.224.18.200 (AS205206) www.4thomsen.dk: 185.224.18.200 (AS205206)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

4 records 58ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…

🔐 DNSSEC#

216ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2415208638
Primary NS (MNAME)	justin.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-16 14:25:15

Field	Value
Registrar	Netsite A/S
Registered	2025-05-26
Expires	2027-05-25 (220d)

📋 WHOIS#

⏱️ Lookup Timing#

110ms

128ms

132ms

AAAA

166ms

TXT

288ms

CAA

137ms

HTTPS

160ms

TLSA

58ms

SOA

0ms

MTA-STS

161ms

DNSSEC

216ms

SRV

156ms

Total

928ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 14:31:37	758ms	2 NS 1 A 2 MX	🔓 Insecure
2026-10-04 03:08:25	532ms	2 NS 1 A 2 MX	🔓 Insecure
2026-10-01 12:10:44	793ms	2 NS 1 A 2 MX	🔓 Insecure
2026-09-30 12:08:41	582ms	2 NS 1 A 2 MX	🔓 Insecure
2026-09-30 07:45:28	1049ms	2 NS 1 A 2 MX	🔓 Insecure
2026-09-19 14:45:02 shown	928ms	2 NS 1 A 2 MX	🔓 Insecure
2026-08-26 10:35:45	650ms	2 NS 1 A 2 MX	🔓 Insecure
2026-08-06 02:04:47	1582ms	2 NS 1 A 2 MX	🔓 Insecure
2026-08-01 16:48:23	1387ms	2 NS 1 A 2 MX	🔓 Insecure
2026-07-15 08:14:45	10008ms	2 NS 1 A 2 MX	🔓 Insecure
2026-07-08 14:44:55	2129ms	2 NS 1 A 2 MX	🔓 Insecure
2026-06-24 05:35:48	858ms	2 NS 1 A 2 MX	❓ Unknown
2026-06-16 12:52:56	1803ms	2 NS 1 A 2 MX	🔓 Insecure