4thomsen.dk DNS records

🖥️ Nameservers2 records 29ms

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 Records1 records 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.224.18.200	60s	parked.netsite.host	AS205206	Netsite A/S	185.224.16.0/22	🇩🇰 Denmark	—

📧 MX Records2 records 31ms

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 Records2 records 170ms

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

🔗 TLSA / DANE4 records 73ms

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…

🔐 DNSSEC104ms

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

🏷️ SOA0ms

Field	Value
Serial	2413135034
Primary NS (MNAME)	justin.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

29ms

A

33ms

MX

31ms

AAAA

32ms

TXT

170ms

CAA

27ms

HTTPS

38ms

TLSA

73ms

SOA

0ms

MTA-STS

52ms

DNSSEC

104ms

SRV

57ms

Total

650ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 10:35:45	650ms	2 NS 1 A 2 MX	🔓 Insecure	View
2026-08-06 02:04:47	1582ms	2 NS 1 A 2 MX	🔓 Insecure	View
2026-08-01 16:48:23	1387ms	2 NS 1 A 2 MX	🔓 Insecure	View
2026-07-15 08:14:45	10008ms	2 NS 1 A 2 MX	🔓 Insecure	View
2026-07-08 14:44:55	2129ms	2 NS 1 A 2 MX	🔓 Insecure	View
2026-06-24 05:35:48	858ms	2 NS 1 A 2 MX	❓ Unknown	View
2026-06-16 12:52:56	1803ms	2 NS 1 A 2 MX	🔓 Insecure	View