preffo.dk DNS records

🖥️ Nameservers2 records 25ms

Nameserver	IP addresses	PTR	ASN / ISP
damon.ns.cloudflare.com	108.162.193.96 172.64.33.96 173.245.59.96 2606:4700:58::adf5:3b60 2803:f800:50::6ca2:c160 2a06:98c1:50::ac40:2160	damon.ns.cloudflare.com damon.ns.cloudflare.com damon.ns.cloudflare.com damon.ns.cloudflare.com damon.ns.cloudflare.com damon.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
sierra.ns.cloudflare.com	108.162.194.245 162.159.38.245 172.64.34.245 2606:4700:50::a29f:26f5 2803:f800:50::6ca2:c2f5 2a06:98c1:50::ac40:22f5	sierra.ns.cloudflare.com sierra.ns.cloudflare.com sierra.ns.cloudflare.com sierra.ns.cloudflare.com sierra.ns.cloudflare.com sierra.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 22ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.47.63	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.145.60	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records2 records 34ms

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

🔷 AAAA Records (IPv6)2 records 42ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3035::6815:2f3f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:913c	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 23ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.47.63,172.67.145.60 ech=AEX+DQBBrQAgACCyYUtu+hjEKpfaUBb9so9Jt4Ua7vJpLWUs6ahSnP5/WwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3035::6815:2f3f,2606:4700:3037::ac43:913c

📝 TXT Records4 records 139ms

TXT Record
apple-domain-verification=s5dvCmKxl0BNpdk8
apple-domain=wD1o46dCPuKkGvXe
protonmail-verification=503a6243423754c0696a1770ea51b0d98449f96c
v=spf1 include:_spf.protonmail.ch ~all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.preffo.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:info@preffo.dk; fo=1

📬 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 / DANE4 records 119ms

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

🔐 DNSSEC95ms

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

🏷️ SOA0ms

Field	Value
Serial	2413418629
Primary NS (MNAME)	damon.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

25ms

A

22ms

MX

34ms

AAAA

42ms

TXT

139ms

CAA

22ms

HTTPS

23ms

TLSA

119ms

SOA

0ms

MTA-STS

48ms

DNSSEC

95ms

SRV

65ms

Total

1068ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-29 21:16:17	1068ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-08-28 02:39:37	9741ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-07-19 20:52:48	7276ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-07-03 01:14:29	10486ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-06-27 21:11:59	914ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-06-25 19:11:08	1167ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-06-24 01:38:24	1090ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-06-17 21:55:58	1326ms	2 NS 2 A 2 MX	🔓 Insecure	View