mtfu.dk

📜 Historical scan 2026-08-11 12:13:56 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

mtfu.dk is a .dk domain served by 2 nameservers (jade.ns.cloudflare.com, oswald.ns.cloudflare.com). It was registered on 15 October 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.11.28 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.protonmail.ch, mailsec.protonmail.ch. 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 226ms

Nameserver	IP addresses	PTR	ASN / ISP
jade.ns.cloudflare.com	108.162.192.167 172.64.32.167 173.245.58.167 2606:4700:50::adf5:3aa7 2803:f800:50::6ca2:c0a7 2a06:98c1:50::ac40:20a7	jade.ns.cloudflare.com jade.ns.cloudflare.com jade.ns.cloudflare.com jade.ns.cloudflare.com jade.ns.cloudflare.com jade.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
oswald.ns.cloudflare.com	108.162.193.218 172.64.33.218 173.245.59.218 2606:4700:58::adf5:3bda 2803:f800:50::6ca2:c1da 2a06:98c1:50::ac40:21da	oswald.ns.cloudflare.com oswald.ns.cloudflare.com oswald.ns.cloudflare.com oswald.ns.cloudflare.com oswald.ns.cloudflare.com oswald.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 228ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.11.28	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.165.22	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

2 records 249ms

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)#

2 records 224ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3032::ac43:a516	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:b1c	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 241ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.11.28,172.67.165.22 ech=AEX+DQBB5gAgACDZBnIF7fQJZsZJJR5nMZBdmRZSP4J+v5VE/29SCB+6KQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3032::ac43:a516,2606:4700:3037::6815:b1c

📝 TXT Records#

3 records 542ms

TXT Record
protonmail-verification=3ec4b56427912fdb822e2643f5e8e765a237ec87
v=DMARC1; p=none
v=spf1 include:_spf.protonmail.ch mx ~all

✉️ SPF#

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

📨 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 04:03:40

www	NXDOMAIN
www vs bare domain	www does not resolve mtfu.dk: 104.21.11.28 172.67.165.22 2606:4700:3032::ac43:a516 2606:4700:3037::6815:b1c (AS13335) www.mtfu.dk: no address (all like this)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

4 records 566ms

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#

374ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2411865775
Primary NS (MNAME)	jade.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-10 04:14:41

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2016-10-15
Expires	2035-10-31 (3299d)

📋 WHOIS#

⏱️ Lookup Timing#

226ms

228ms

249ms

AAAA

224ms

TXT

542ms

CAA

227ms

HTTPS

241ms

TLSA

566ms

SOA

0ms

MTA-STS

305ms

DNSSEC

374ms

SRV

279ms

Total

4861ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-10 04:03:40	2387ms	2 NS 2 A 2 MX	🔓 Insecure
2026-10-01 01:12:08	596ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-29 18:40:43	802ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-26 08:43:19	963ms	2 NS 2 A 2 MX	🔓 Insecure
2026-09-25 08:35:41	708ms	2 NS 2 A 2 MX	🔓 Insecure
2026-08-11 12:13:56 shown	4861ms	2 NS 2 A 2 MX	🔓 Insecure
2026-07-27 21:52:28	1114ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-27 09:50:51	2205ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-25 03:54:01	3644ms	2 NS 2 A 2 MX	🔓 Insecure
2026-06-17 14:55:27	4650ms	2 NS 2 A 2 MX	🔓 Insecure