0x90.dk DNS records

🖥️ Nameservers2 records 64ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records1 records 68ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.98.180.249	3600s	ra.0x90.dk	AS24940	Hetzner Online GmbH	91.98.0.0/15	🇩🇪 Germany	Falkenstein

📧 MX Records2 records 68ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	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	3600s	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)1 records 64ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a01:4f8:2210:24c3::1	3600s	ra.0x90.dk	AS24940	Hetzner Online GmbH	2a01:4f8:0:0:0:0:0:0/31	🇩🇪 Germany	Falkenstein

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 177ms

TXT Record
protonmail-verification=e1551aafc222999924d0430fff3075ea94e683b5
v=spf1 include:_spf.protonmail.ch -all

✉️ SPF

Policy	Record (0x90.dk)
-all (hard fail)	v=spf1 include:_spf.protonmail.ch -all

📨 DMARC

Policy	Record (_dmarc.0x90.dk)
p=reject	v=DMARC1; p=reject; fo=1; rua=mailto:dmarc@0x90.dk

📬 MTA-STS188ms

Check	Result
Status	🔒 Enforce
TXT record (_mta-sts)	✓ Found
HTTPS policy	✓ Valid
Mode	enforce
Policy ID	20251201141500
max_age	2678400s
Policy MX	mail.protonmail.ch, mailsec.protonmail.ch

📈 TLSRPT

Status	Report address (rua)
✓ Enabled	mailto:tls-report@0x90.dk

📜 CAA Records1 records 62ms

Flags	Tag	Value
0	issue	letsencrypt.org

🔗 TLSA / DANE4 records 546ms

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…

🔐 DNSSEC160ms

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

🏷️ SOA54ms

Field	Value
Serial	2026081101
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

64ms

A

68ms

MX

68ms

AAAA

64ms

TXT

177ms

CAA

62ms

HTTPS

62ms

TLSA

546ms

SOA

54ms

MTA-STS

188ms

DNSSEC

160ms

SRV

141ms

Total

17549ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-16 07:02:15	17549ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-08-12 07:48:35	1234ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-18 04:35:26	2420ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-07-15 19:10:43	1215ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-25 03:26:28	687ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-23 00:51:12	1133ms	2 NS 1 A 2 MX	🔒 Secure	View
2026-06-16 12:33:48	1658ms	2 NS 1 A 2 MX	🔒 Secure	View