plainmail.dk

📜 Historical scan 2026-10-05 09:50:46 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

plainmail.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 18 June 2026 (WHOIS) and first appeared in the .dk zone on 19 June 2026. Its website address 178.105.164.181 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by mxext1.mailbox.org, mxext2.mailbox.org and 2 more. The zone is DNSSEC-signed and validates, publishes a DMARC policy and has no IPv6 address. 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#

3 records 37ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 39ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
178.105.164.181	600s	static.181.164.105.178.clients.your-server.de	AS24940	Hetzner Online GmbH	178.104.0.0/15	🇩🇪 Germany	Nuremberg

📧 MX Records#

4 records 34ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	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	600s	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
10	600s	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
10	600s	mxext4.mailbox.org	2001:67c:2050:104:0:4:25:1 80.241.60.217	mx4.mailbox.org mx4.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

🔌 SRV Records#

1 records 48ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.simply.com

📝 TXT Records#

1 records 114ms

TXT Record
v=spf1 include:spf.simply.com include:mailbox.org include:mailgun.org ~all

✉️ SPF#

Policy	Record (plainmail.dk)
~all (soft fail)	v=spf1 include:spf.simply.com include:mailbox.org include:mailgun.org ~all

📨 DMARC#

Policy	Record (_dmarc.plainmail.dk)
p=reject	v=DMARC1; p=reject; pct=100; fo=1; ri=3600; rua=mailto:ed331023@dmarc.mailgun.org,mailto:x5omjtprjve@inbox.ondmarc.com,mailto:dmarc@robot.simply.com; ruf=mailto:ed331023@dmarc.mailgun.org,mailto:x5omjtprjve@inbox.ondmarc.com,mailto:dmarc@robot.simply.com;

📬 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 2026-10-12 23:12:58

www	178.105.164.181 (AS24940) (address records, no CNAME)
www vs bare domain	Same network plainmail.dk: 178.105.164.181 (AS24940) www.plainmail.dk: 178.105.164.181 (AS24940)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 8/10 · policy: ~all

warn 8 of the 10 allowed DNS lookups used: one more include can break SPF

🔗 TLSA / DANE#

12 records 128ms

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	4758AF6F02DFB5DC8795FA402E77A8A0…
SMTP _25._tcp.mxext2.mailbox.org	DANE-EE · SPKI · SHA-256	996AD31D65E03F038B8EC950F6F26611…
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	E41CC7633029AFDBA53744D7E5FC31EF…
SMTP _25._tcp.mxext3.mailbox.org	DANE-EE · SPKI · SHA-256	996AD31D65E03F038B8EC950F6F26611…
SMTP _25._tcp.mxext4.mailbox.org	DANE-EE · SPKI · SHA-256	4758AF6F02DFB5DC8795FA402E77A8A0…
SMTP _25._tcp.mxext4.mailbox.org	DANE-EE · SPKI · SHA-256	996AD31D65E03F038B8EC950F6F26611…
SMTP _25._tcp.mxext4.mailbox.org	DANE-EE · SPKI · SHA-256	E41CC7633029AFDBA53744D7E5FC31EF…

🔐 DNSSEC#

56ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

27ms

Field	Value
Serial	2026100500
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-04 14:44:15

Field	Value
Registrar	Simply.com A/S
Registered	2026-06-18
Expires	2027-06-17 (234d)

📋 WHOIS#

⏱️ Lookup Timing#

37ms

39ms

34ms

AAAA

32ms

TXT

114ms

CAA

48ms

HTTPS

35ms

TLSA

128ms

SOA

27ms

MTA-STS

41ms

DNSSEC

56ms

SRV

48ms

Total

696ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 23:12:58	2491ms	3 NS 1 A 4 MX	🔒 Secure
2026-10-05 09:50:46 shown	696ms	3 NS 1 A 4 MX	🔒 Secure
2026-10-04 09:45:53	1250ms	3 NS 1 A 6 MX	🔒 Secure
2026-09-01 18:28:25	2211ms	3 NS 1 A 6 MX	🔒 Secure
2026-08-09 11:43:58	1771ms	3 NS 1 A 6 MX	🔒 Secure
2026-07-08 11:15:01	3661ms	3 NS 1 A 6 MX	🔒 Secure
2026-07-05 22:23:26	971ms	3 NS 1 A 3 MX	🔒 Secure
2026-07-04 15:12:22	1380ms	3 NS 1 A 3 MX	🔒 Secure
2026-06-23 20:29:51	1057ms	3 NS 1 A 3 MX	🔒 Secure
2026-06-21 10:02:19	1335ms	3 NS 1 A 3 MX	🔒 Secure
2026-06-19 08:38:17	1205ms	3 NS 1 A 3 MX	🔒 Secure