tudseborg.dk DNS records

🖥️ Nameservers2 records 159ms

Nameserver	IP addresses	PTR	ASN / ISP
tate.ns.cloudflare.com	108.162.195.191 162.159.44.191 172.64.35.191 2606:4700:58::a29f:2cbf 2803:f800:50::6ca2:c3bf 2a06:98c1:50::ac40:23bf	tate.ns.cloudflare.com tate.ns.cloudflare.com tate.ns.cloudflare.com tate.ns.cloudflare.com tate.ns.cloudflare.com tate.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
zita.ns.cloudflare.com	108.162.192.243 172.64.32.243 173.245.58.243 2606:4700:50::adf5:3af3 2803:f800:50::6ca2:c0f3 2a06:98c1:50::ac40:20f3	zita.ns.cloudflare.com zita.ns.cloudflare.com zita.ns.cloudflare.com zita.ns.cloudflare.com zita.ns.cloudflare.com zita.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 153ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.25.187	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.134.121	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records2 records 106ms

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	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

🔷 AAAA Records (IPv6)2 records 85ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:8679	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3036::6815:19bb	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 203ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.25.187,172.67.134.121 ech=AEX+DQBBxgAgACDU02VX/J24gNRadHBUv0UeO9HK/mhXzzhdTfHDskF6WAAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:8679,2606:4700:3036::6815:19bb

📝 TXT Records2 records 509ms

TXT Record
protonmail-verification=991e0e4428ba85985e3ab7a9d138fb9c01ed4302
v=spf1 include:_spf.protonmail.ch ~all

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.tudseborg.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.tudseborg.dk	Tw8YD9trGSckk5B64t_biOFTt1NtmriS0ALWEaaI0pE
TXT	_acme-challenge.tudseborg.dk	VPaVOuVcLu15CW49_HIJeuihsTW4W8-ns3mblfiblQ0

🔗 TLSA / DANE2 records 188ms

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…

🔐 DNSSEC426ms

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	2413605310
Primary NS (MNAME)	tate.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 RegistrationWHOIS fetched 2026-07-18 23:00:52

Field	Value
Registrar	Simply.com A/S
Registered	2026-05-20
Expires	2027-05-19 (258d)

📋 WHOIS

⏱️ Lookup Timing

NS

159ms

A

153ms

MX

106ms

AAAA

85ms

TXT

509ms

CAA

207ms

HTTPS

203ms

TLSA

188ms

SOA

0ms

MTA-STS

234ms

DNSSEC

426ms

SRV

232ms

Total

1826ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 16:35:30	1826ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-07-18 23:00:05	1405ms	2 NS 2 A 2 MX	🔓 Insecure	View
2026-06-17 14:06:16	3434ms	2 NS 2 A 2 MX	🔓 Insecure	View