tb8.dk

📜 Historical scan 2026-10-07 23:43:08 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tb8.dk is a .dk domain served by 2 nameservers (marty.ns.cloudflare.com, vera.ns.cloudflare.com). It was registered on 28 April 2020 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.65.182 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 37ms

Nameserver	IP addresses	PTR	ASN / ISP
marty.ns.cloudflare.com	108.162.193.204 172.64.33.204 173.245.59.204 2606:4700:58::adf5:3bcc 2803:f800:50::6ca2:c1cc 2a06:98c1:50::ac40:21cc	marty.ns.cloudflare.com marty.ns.cloudflare.com marty.ns.cloudflare.com marty.ns.cloudflare.com marty.ns.cloudflare.com marty.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
vera.ns.cloudflare.com	108.162.192.147 172.64.32.147 173.245.58.147 2606:4700:50::adf5:3a93 2803:f800:50::6ca2:c093 2a06:98c1:50::ac40:2093	vera.ns.cloudflare.com vera.ns.cloudflare.com vera.ns.cloudflare.com vera.ns.cloudflare.com vera.ns.cloudflare.com vera.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 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.65.182	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.165.76	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
65535	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

🔷 AAAA Records (IPv6)#

2 records 45ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::6815:41b6	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:a54c	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 46ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.65.182,172.67.165.76 ech=AEX+DQBBmAAgACCP/tRS9t3KHbLVCTHxHhralljTtSvfpCt2ZhVLejBvWAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:41b6,2606:4700:3037::ac43:a54c

📝 TXT Records#

2 records 181ms

TXT Record
t-verify=31a2b2f9634584b0c92e087e5713a31c
v=spf1 include:spf.tutanota.de -all

✉️ SPF#

Policy	Record (tb8.dk)
-all (hard fail)	v=spf1 include:spf.tutanota.de -all

📨 DMARC#

Policy	Record (_dmarc.tb8.dk)
p=quarantine	v=DMARC1; p=quarantine; adkim=s; rua=mailto:6505ee77e465433dae815b50190c4596@dmarc-reports.cloudflare.net;

📬 MTA-STS#

296ms

Check	Result
Status	🔒 Enforce
TXT record (_mta-sts)	✓ Found
HTTPS policy	✓ Valid
Mode	enforce
Policy ID	20190723
max_age	86400s
Policy MX	mail.tutanota.de

📈 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 2026-10-22 04:21:48

www	NXDOMAIN
www vs bare domain	www does not resolve tb8.dk: 104.21.65.182 172.67.165.76 2606:4700:3034::6815:41b6 2606:4700:3037::ac43:a54c (AS13335) www.tb8.dk: no address (all like this)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
s1	s1.domainkey.tutanota.de	RSA · ~2048 bit
s2	s2.domainkey.tutanota.de	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

2 records 138ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mail.tutanota.de	DANE-EE · SPKI · SHA-256	5AE0D6DC8A713441003F578C5A1D4D70…
SMTP _25._tcp.mail.tutanota.de	DANE-EE · Full cert · SHA-256	D141F8F3A4AAC2E4D2677AAFCC723D8E…

🔐 DNSSEC#

65ms

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

🏷️ SOA#

51ms

Field	Value
Serial	2416090403
Primary NS (MNAME)	marty.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-08 21:47:43

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2020-04-28
Expires	2027-04-30 (189d)

📋 WHOIS#

⏱️ Lookup Timing#

37ms

39ms

42ms

AAAA

45ms

TXT

181ms

CAA

45ms

HTTPS

46ms

TLSA

138ms

SOA

51ms

MTA-STS

296ms

DNSSEC

65ms

SRV

57ms

Total

817ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-22 04:21:48	804ms	2 NS 2 A 1 MX	🔓 Insecure
2026-10-07 23:43:08 shown	817ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-29 08:19:10	1073ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-28 07:55:29	1151ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-27 07:35:33	1405ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-06 07:46:29	2168ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-01 02:10:06	2197ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-30 16:54:31	17429ms	2 NS 2 A 1 MX	❓ Unknown
2026-06-18 01:52:50	1284ms	2 NS 2 A 1 MX	🔓 Insecure