dagu.dk

📜 Historical scan 2026-08-15 11:17:09 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

dagu.dk is a .dk domain served by 2 nameservers (aurora.ns.cloudflare.com, miguel.ns.cloudflare.com). It was registered on 28 September 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.82.51 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by mail.tutanota.de. The zone is not DNSSEC-signed, publishes a 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 210ms

Nameserver	IP addresses	PTR	ASN / ISP
aurora.ns.cloudflare.com	108.162.194.110 162.159.38.110 172.64.34.110 2606:4700:50::a29f:266e 2803:f800:50::6ca2:c26e 2a06:98c1:50::ac40:226e	aurora.ns.cloudflare.com aurora.ns.cloudflare.com aurora.ns.cloudflare.com aurora.ns.cloudflare.com aurora.ns.cloudflare.com aurora.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
miguel.ns.cloudflare.com	108.162.195.95 162.159.44.95 172.64.35.95 2606:4700:58::a29f:2c5f 2803:f800:50::6ca2:c35f 2a06:98c1:50::ac40:235f	miguel.ns.cloudflare.com miguel.ns.cloudflare.com miguel.ns.cloudflare.com miguel.ns.cloudflare.com miguel.ns.cloudflare.com miguel.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 257ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.82.51	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.153.143	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 251ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.tutanota.de	185.205.69.211 185.205.69.213 185.205.69.214	mail.w11.tutanota.de mail.w13.tutanota.de mail.w14.tutanota.de	AS210909 Tutao GmbH AS210909 Tutao GmbH AS210909 Tutao GmbH

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	104.21.82.51
🔶 Autoconfig	104.21.82.51

🔷 AAAA Records (IPv6)#

2 records 271ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3030::6815:5233	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3033::ac43:998f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 252ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.82.51,172.67.153.143 ech=AEX+DQBBxwAgACClV1BQjkXccMDDGN1+7i5bUKE15cRdjcXl4fDYVJxGXwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3030::6815:5233,2606:4700:3033::ac43:998f

📝 TXT Records#

2 records 721ms

TXT Record
t-verify=cfc988d42c3330686afc5ab147584b37
v=spf1 include:spf.tutanota.de -all

✉️ SPF#

Policy	Record (dagu.dk)
-all (hard fail)	v=spf1 include:spf.tutanota.de -all

📨 DMARC#

Policy	Record (_dmarc.dagu.dk)
p=quarantine	v=DMARC1; p=quarantine; adkim=s

📬 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 2026-10-16 00:31:41

www	104.21.82.51 172.67.153.143 2606:4700:3030::6815:5233 2606:4700:3033::ac43:998f (AS13335) (address records, no CNAME)
www vs bare domain	Same network dagu.dk: 104.21.82.51 172.67.153.143 2606:4700:3030::6815:5233 2606:4700:3033::ac43:998f (AS13335) www.dagu.dk: 104.21.82.51 172.67.153.143 2606:4700:3030::6815:5233 2606:4700:3033::ac43:998f (AS13335)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.dagu.dk	gcm57Rq_aQSXMXSEPRzEzlBOW0idH4IYfDQVdLzwCF0
TXT	_acme-challenge.dagu.dk	rV26svBL0-uGdv-oQSI278313B3f5iw4jzkG97amPiU

🔗 TLSA / DANE#

1 records 326ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mail.tutanota.de	DANE-EE · Full cert · SHA-256	D141F8F3A4AAC2E4D2677AAFCC723D8E…

🔐 DNSSEC#

560ms

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	2412227900
Primary NS (MNAME)	aurora.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-17 15:16:49

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2023-09-28
Expires	2027-09-27 (342d)

📋 WHOIS#

⏱️ Lookup Timing#

210ms

257ms

251ms

AAAA

271ms

TXT

721ms

CAA

226ms

HTTPS

252ms

TLSA

326ms

SOA

0ms

MTA-STS

337ms

DNSSEC

560ms

SRV

337ms

Total

3999ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 00:31:41	892ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-26 17:07:07	763ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-13 03:49:08	816ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-03 14:14:23	9827ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-29 07:45:27	1520ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-19 00:31:30	1566ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-17 11:03:41	1256ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-15 11:17:09 shown	3999ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-02 14:12:09	26797ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-25 09:38:24	1169ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-24 02:19:04	1076ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 23:50:15	428ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 23:41:15	562ms	2 NS 2 A 1 MX	🔓 Insecure