thunderbird.dk DNS records

🖥️ Nameservers2 records 25ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.desec.io	2607:f740:e633:deec::2 45.54.76.1	ns1.desec.io ns1.desec.io	AS63911 NetActuate, Inc AS63911 NetActuate, Inc
ns2.desec.org	157.53.224.1 2607:f740:e00a:deec::2	ns2.desec.org ns2.desec.org	AS36217 NetActuate, Inc AS36217 NetActuate, Inc

🌍 A Records

🌍

No A records found

📧 MX Records3 records 42ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mxext1.mailbox.org	2001:67c:2050:104:0:1:25:1 80.241.60.212	mx1.mailbox.org mx1.mailbox.org	AS199118 Heinlein-Support GmbH AS199118 Heinlein-Support GmbH
10	3600s	mxext2.mailbox.org	2001:67c:2050:104:0:2:25:1 80.241.60.215	mx2.mailbox.org mx2.mailbox.org	AS199118 Heinlein-Support GmbH AS199118 Heinlein-Support GmbH
20	3600s	mxext3.mailbox.org	2001:67c:2050:104:0:3:25:1 80.241.60.216	mx3.mailbox.org mx3.mailbox.org	AS199118 Heinlein-Support GmbH AS199118 Heinlein-Support GmbH

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 206ms

TXT Record
v=spf1 include:mailbox.org ~all

✉️ SPF

Policy	Record (thunderbird.dk)
~all (soft fail)	v=spf1 include:mailbox.org ~all

📨 DMARC

Policy	Record (_dmarc.thunderbird.dk)
p=none (monitor only)	v=DMARC1;p=none;rua=mailto:mail@thunderbird.dk

📬 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 / DANE9 records 317ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mxext1.mailbox.org	DANE-EE · SPKI · SHA-256	E41CC7633029AFDBA53744D7E5FC31EF…
SMTP _25._tcp.mxext1.mailbox.org	DANE-EE · SPKI · SHA-256	996AD31D65E03F038B8EC950F6F26611…
SMTP _25._tcp.mxext1.mailbox.org	DANE-EE · SPKI · SHA-256	4758AF6F02DFB5DC8795FA402E77A8A0…
SMTP _25._tcp.mxext2.mailbox.org	DANE-EE · SPKI · SHA-256	996AD31D65E03F038B8EC950F6F26611…
SMTP _25._tcp.mxext2.mailbox.org	DANE-EE · SPKI · SHA-256	4758AF6F02DFB5DC8795FA402E77A8A0…
SMTP _25._tcp.mxext2.mailbox.org	DANE-EE · SPKI · SHA-256	E41CC7633029AFDBA53744D7E5FC31EF…
SMTP _25._tcp.mxext3.mailbox.org	DANE-EE · SPKI · SHA-256	4758AF6F02DFB5DC8795FA402E77A8A0…
SMTP _25._tcp.mxext3.mailbox.org	DANE-EE · SPKI · SHA-256	996AD31D65E03F038B8EC950F6F26611…
SMTP _25._tcp.mxext3.mailbox.org	DANE-EE · SPKI · SHA-256	E41CC7633029AFDBA53744D7E5FC31EF…

🔐 DNSSEC9070ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: ncache nxrrset

🏷️ SOA0ms

Field	Value
Serial	2024104859
Primary NS (MNAME)	get.desec.io
Responsible (RNAME)	get@desec.io
Refresh	86400s
Retry	3600s
Expire	2419200s
Minimum (neg-cache TTL)	3600s

📋 RegistrationWHOIS fetched 2026-08-09 03:45:39

Field	Value
Registrar	Dom
Registered	2000-05-15
Expires	2030-06-30 (1395d)

📋 WHOIS

⏱️ Lookup Timing

NS

25ms

A

43ms

MX

42ms

AAAA

43ms

TXT

206ms

CAA

41ms

HTTPS

43ms

TLSA

317ms

SOA

0ms

MTA-STS

56ms

DNSSEC

9070ms

SRV

46ms

Total

10439ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 17:20:27	1077ms	2 NS 0 A 4 MX	🔒 Secure	View
2026-08-21 07:44:25	3429ms	2 NS 0 A 4 MX	🔒 Secure	View
2026-08-18 00:53:26	1908ms	2 NS 0 A 4 MX	🔒 Secure	View
2026-08-14 15:24:31	1793ms	2 NS 0 A 3 MX	🔒 Secure	View
2026-08-09 03:45:02	3047ms	2 NS 0 A 3 MX	🔒 Secure	View
2026-07-31 10:34:08	1711ms	2 NS 0 A 3 MX	🔒 Secure	View
2026-07-24 14:39:41	10544ms	2 NS 0 A 3 MX	🔒 Secure	View
2026-07-17 22:38:20	3247ms	2 NS 0 A 3 MX	🔒 Secure	View
2026-07-11 15:00:15	10439ms	2 NS 0 A 3 MX	🔒 Secure	View
2026-07-03 10:23:53	3057ms	2 NS 0 A 3 MX	🔒 Secure	View
2026-06-25 20:48:26	756ms	2 NS 0 A 3 MX	🔒 Secure	View
2026-06-20 02:13:00	781ms	2 NS 0 A 3 MX	🔒 Secure	View
2026-06-19 06:48:40	1038ms	2 NS 0 A 3 MX	⚠️ Bogus	View
2026-06-18 04:25:47	1037ms	2 NS 0 A 3 MX	🔒 Secure	View
2026-06-18 04:10:34	3913ms	2 NS 0 A 3 MX	🔒 Secure	View