tb8.dk

📜 Historical scan 2026-07-30 16:54:31 · ← 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 of unknown DNSSEC status, 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 36ms

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 38ms

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 34ms

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 35ms

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 28ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.65.182,172.67.165.76 ech=AEX+DQBBbwAgACDNWnNTuXuU9yZrbcLUckT2B0dl/Qa0AOK8W3NNezNXJwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::6815:41b6,2606:4700:3037::ac43:a54c

📝 TXT Records#

2 records 222ms

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#

8379ms

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#

1 records 8089ms

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

🔐 DNSSEC#

130ms

Check	Result
Validation Status	❓ Unknown
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	broken trust chain resolving 'tb8.dk/A/IN': 127.0.0.1#53

🏷️ SOA#

0ms

Field	Value
Serial	2410856107
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#

36ms

38ms

34ms

AAAA

35ms

TXT

222ms

CAA

35ms

HTTPS

28ms

TLSA

8089ms

SOA

0ms

MTA-STS

8379ms

DNSSEC

130ms

SRV

8099ms

Total

17429ms

🕐 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	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 shown	17429ms	2 NS 2 A 1 MX	❓ Unknown
2026-06-18 01:52:50	1284ms	2 NS 2 A 1 MX	🔓 Insecure