psu.dk DNS records

🖥️ Nameservers3 records 53ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.wordpress.com	198.181.116.9 2a04:fa87:ffff::c6b5:7409	ns1.wordpress.com ns1.wordpress.com	AS2635 Automattic, Inc AS2635 Automattic, Inc
ns2.wordpress.com	198.181.117.9 2a04:fa87:ffff::c6b5:7509	ns2.wordpress.com ns2.wordpress.com	AS2635 Automattic, Inc AS2635 Automattic, Inc
ns3.wordpress.com	192.0.74.9 2620:115:c00f::c000:4a09	ns3.wordpress.com ns3.wordpress.com	AS2635 Automattic, Inc AS2635 Automattic, Inc

🌍 A Records2 records 54ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
192.0.78.24	300s	—	AS2635	Automattic, Inc	192.0.64.0/18	🇺🇸 United States	San Francisco
192.0.78.25	300s	—	AS2635	Automattic, Inc	192.0.64.0/18	🇺🇸 United States	San Francisco

📧 MX Records2 records 43ms

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

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	psu.dk → 192.0.78.25
🔶 Autoconfig	psu.dk → 192.0.78.24

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 265ms

TXT Record
protonmail-verification=d66afbf87359246e986bcf175f5bae241a1a6bf5
v=spf1 include:_spf.protonmail.ch ~all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.psu.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
CNAME	_acme-challenge.psu.dk	psu.dk
TXT	psu.dk	protonmail-verification=d66afbf87359246e986bcf175f5bae241a1a6bf5

🔗 TLSA / DANE4 records 108ms

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…

🔐 DNSSEC101ms

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	2005071858
Primary NS (MNAME)	ns1.wordpress.com
Responsible (RNAME)	hostmaster@wordpress.com
Refresh	14400s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

53ms

A

54ms

MX

43ms

AAAA

62ms

TXT

265ms

CAA

56ms

HTTPS

57ms

TLSA

108ms

SOA

0ms

MTA-STS

53ms

DNSSEC

101ms

SRV

91ms

Total

1272ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-28 03:26:51	1272ms	3 NS 2 A 2 MX	🔓 Insecure	View
2026-07-25 01:20:02	2387ms	3 NS 2 A 2 MX	🔓 Insecure	View
2026-07-24 00:26:33	19579ms	3 NS 2 A 2 MX	🔓 Insecure	View
2026-06-25 15:54:23	811ms	3 NS 2 A 2 MX	🔓 Insecure	View
2026-06-23 20:39:06	923ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-20 02:20:17	929ms	3 NS 2 A 2 MX	🔓 Insecure	View
2026-06-18 02:39:29	1131ms	3 NS 2 A 2 MX	🔓 Insecure	View