unit37.dk DNS records

🖥️ Nameservers2 records 154ms

Nameserver	IP addresses	PTR	ASN / ISP
aleena.ns.cloudflare.com	108.162.194.81 162.159.38.81 172.64.34.81 2606:4700:50::a29f:2651 2803:f800:50::6ca2:c251 2a06:98c1:50::ac40:2251	aleena.ns.cloudflare.com aleena.ns.cloudflare.com aleena.ns.cloudflare.com aleena.ns.cloudflare.com aleena.ns.cloudflare.com aleena.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
kenneth.ns.cloudflare.com	108.162.195.41 162.159.44.41 172.64.35.41 2606:4700:58::a29f:2c29 2803:f800:50::6ca2:c329 2a06:98c1:50::ac40:2329	kenneth.ns.cloudflare.com kenneth.ns.cloudflare.com kenneth.ns.cloudflare.com kenneth.ns.cloudflare.com kenneth.ns.cloudflare.com kenneth.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 93ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.1.26	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.151.226	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records2 records 170ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mail.protonmail.ch	176.119.200.128 185.205.70.128 185.70.42.128	mail.protonmail.ch mail.protonmail.ch mail.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG
20	300s	mailsec.protonmail.ch	176.119.200.129 185.205.70.129 185.70.42.129	mailsec.protonmail.ch mailsec.protonmail.ch mailsec.protonmail.ch	AS62371 Proton AG AS62371 Proton AG AS62371 Proton AG

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	104.21.1.26
🔶 Autoconfig	172.67.151.226

🔷 AAAA Records (IPv6)2 records 150ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:11a	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3035::ac43:97e2	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 132ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.1.26,172.67.151.226 ech=AEX+DQBBfwAgACBjibDbJlg4rWyEPSw08YLojJxxB1kBIuSoORmGo4mkHQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:11a,2606:4700:3035::ac43:97e2

📝 TXT Records2 records 546ms

TXT Record
protonmail-verification=0241a571a199f46c30989ca592e7b12f66e6f17f
v=spf1 include:_spf.protonmail.ch ~all

✉️ SPF

Policy	Record (unit37.dk)
~all (soft fail)	v=spf1 include:_spf.protonmail.ch ~all

📨 DMARC

Policy	Record (_dmarc.unit37.dk)
p=quarantine	v=DMARC1; p=quarantine

📬 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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.unit37.dk	4R9g4jjoD1IIqXhobobgl3MxYIRrtDoGcAc6ptCUffM
TXT	_acme-challenge.unit37.dk	kgjSa4rE4JgzQALuho9HmgKfnXPJkc2NXTaGUO5fkUk

🔗 TLSA / DANE4 records 270ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mail.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	6111A5698D23C89E09C36FF833C1487E…
SMTP _25._tcp.mailsec.protonmail.ch	DANE-EE · SPKI · SHA-256	76BB66711DA416433CA890A5B2E5A053…

🔐 DNSSEC336ms

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

🏷️ SOA0ms

Field	Value
Serial	2413565922
Primary NS (MNAME)	aleena.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

154ms

A

93ms

MX

170ms

AAAA

150ms

TXT

546ms

CAA

195ms

HTTPS

132ms

TLSA

270ms

SOA

0ms

MTA-STS

309ms

DNSSEC

336ms

SRV

215ms

Total

1992ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 19:14:11	1992ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-28 09:18:15	10414ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-26 10:39:19	10733ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-15 16:15:24	3415ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-05 20:34:37	2021ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-07-20 23:52:31	10051ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-06-27 02:39:55	786ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-06-20 04:21:57	780ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-06-20 02:17:20	4442ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-06-18 00:37:23	3016ms	2 NS 2 A 2 MX	🔓 Insecure	View