causality.dk DNS records

🖥️ Nameservers2 records 40ms

Nameserver	IP addresses	PTR	ASN / ISP
abby.ns.cloudflare.com	—	—	—
arturo.ns.cloudflare.com	—	—	—

🌍 A Records2 records 34ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.92.84	—	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.190.137	—	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records2 records 34ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	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	—	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
2606:4700:3033::ac43:be89	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000::/42	—	—
2606:4700:3037::6815:5c54	—	—	AS13335	Cloudflare, Inc.	2606:4700:3000::/42	—	—

🔐 HTTPS Records1 records 38ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.92.84,172.67.190.137 ech=AEX+DQBBcgAgACBMRRJsGDTnRtPLvC9BgW/e6+fxYyN0FrdvSb8rBGIENwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3033::ac43:be89,2606:4700:3037::6815:5c54

📝 TXT Records2 records 134ms

TXT Record
protonmail-verification=f951e32c3a5e2b3929456a9edad3bd804990e6fa
v=spf1 include:_spf.protonmail.ch mx -all

✉️ SPF

Policy	Record (causality.dk)
-all (hard fail)	v=spf1 include:_spf.protonmail.ch mx -all

📨 DMARC

Policy	Record (_dmarc.causality.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:871d5397b2f94722bc7bb08a3afc5a2d@dmarc-reports.cloudflare.net;

📬 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 98ms

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…

🔐 DNSSEC126ms

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

🏷️ SOA39ms

Field	Value
Serial	2407088869
Primary NS (MNAME)	abby.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

40ms

A

34ms

MX

34ms

AAAA

42ms

TXT

134ms

CAA

68ms

HTTPS

38ms

TLSA

98ms

SOA

39ms

MTA-STS

49ms

DNSSEC

126ms

SRV

0ms

Total

684ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 21:58:03	825ms	2 NS 2 A 2 MX	🔒 Secure	View
2026-08-08 04:36:41	1494ms	2 NS 2 A 2 MX	🔒 Secure	View
2026-08-01 10:38:19	1177ms	2 NS 2 A 2 MX	🔒 Secure	View
2026-07-18 01:25:26	1395ms	2 NS 2 A 2 MX	🔒 Secure	View
2026-07-11 15:41:07	3343ms	2 NS 2 A 2 MX	🔒 Secure	View
2026-07-01 23:02:51	987ms	2 NS 2 A 2 MX	🔒 Secure	View
2026-06-16 19:45:27	684ms	2 NS 2 A 2 MX	🔒 Secure	View