vhf-kursus.dk DNS records

🖥️ Nameservers2 records 22ms

Nameserver	IP addresses	PTR	ASN / ISP
fiona.ns.cloudflare.com	108.162.192.157 172.64.32.157 173.245.58.157 2606:4700:50::adf5:3a9d 2803:f800:50::6ca2:c09d 2a06:98c1:50::ac40:209d	fiona.ns.cloudflare.com fiona.ns.cloudflare.com fiona.ns.cloudflare.com fiona.ns.cloudflare.com fiona.ns.cloudflare.com fiona.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
matt.ns.cloudflare.com	108.162.193.131 172.64.33.131 173.245.59.131 2606:4700:58::adf5:3b83 2803:f800:50::6ca2:c183 2a06:98c1:50::ac40:2183	matt.ns.cloudflare.com matt.ns.cloudflare.com matt.ns.cloudflare.com matt.ns.cloudflare.com matt.ns.cloudflare.com matt.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records2 records 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.26.228	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.139.127	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records4 records 33ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	300s	mx1.pub.mailpod12-cph3.one.com	104.37.34.246	mx1.pub.mailpod12-cph3.one.com	AS51468 One.com A/S
10	300s	mx2.pub.mailpod12-cph3.one.com	104.37.34.247	mx2.pub.mailpod12-cph3.one.com	AS51468 One.com A/S
10	300s	mx3.pub.mailpod12-cph3.one.com	104.37.34.248	mx3.pub.mailpod12-cph3.one.com	AS51468 One.com A/S
10	300s	mx4.pub.mailpod12-cph3.one.com	104.37.34.249	mx4.pub.mailpod12-cph3.one.com	AS51468 One.com A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	104.21.26.228
🔶 Autoconfig	104.21.26.228

🔷 AAAA Records (IPv6)2 records 28ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:1ae4	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3034::ac43:8b7f	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records1 records 21ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.26.228,172.67.139.127 ech=AEX+DQBBvAAgACDbcRsueUOUzqLL6O4KsNVVhOdqEDJ1qmUwE57t8WDkaQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:1ae4,2606:4700:3034::ac43:8b7f

📝 TXT Records

📝

No TXT records found

✉️ SPF

✗ No SPF record — mail spoofing not restricted

📨 DMARC

✗ No DMARC record — mail spoofing not restricted

📬 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.vhf-kursus.dk	KyP5HsXPDFfY_y6rQeGuClv-2g7p8Le5lx1nf4ecYz4
TXT	_acme-challenge.vhf-kursus.dk	u41g_1y7WpYLQTkNvFqwtppJPH7THVxj7yWnwEv6OkI

🔗 TLSA / DANE4 records 52ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1.pub.mailpod12-cph3.one.com	DANE-EE · SPKI · SHA-256	3E81C76D10E1A717F28178710EADCAA8…
SMTP _25._tcp.mx2.pub.mailpod12-cph3.one.com	DANE-EE · SPKI · SHA-256	3E81C76D10E1A717F28178710EADCAA8…
SMTP _25._tcp.mx3.pub.mailpod12-cph3.one.com	DANE-EE · SPKI · SHA-256	3E81C76D10E1A717F28178710EADCAA8…
SMTP _25._tcp.mx4.pub.mailpod12-cph3.one.com	DANE-EE · SPKI · SHA-256	3E81C76D10E1A717F28178710EADCAA8…

🔐 DNSSEC109ms

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	2413698466
Primary NS (MNAME)	fiona.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

22ms

A

35ms

MX

33ms

AAAA

28ms

TXT

163ms

CAA

25ms

HTTPS

21ms

TLSA

52ms

SOA

0ms

MTA-STS

43ms

DNSSEC

109ms

SRV

57ms

Total

661ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 01:15:42	661ms	2 NS 2 A 4 MX	🔓 Insecure	View
2026-08-28 01:49:38	831ms	2 NS 2 A 4 MX	🔓 Insecure	View
2026-08-25 23:00:12	2765ms	2 NS 2 A 4 MX	🔓 Insecure	View
2026-08-24 16:40:36	1214ms	2 NS 2 A 4 MX	🔓 Insecure	View
2026-08-19 06:48:47	6258ms	2 NS 2 A 4 MX	🔓 Insecure	View
2026-07-17 02:27:15	1196ms	2 NS 2 A 4 MX	🔓 Insecure	View
2026-06-26 13:38:23	1206ms	2 NS 2 A 4 MX	🔓 Insecure	View
2026-06-22 12:24:55	3834ms	2 NS 2 A 4 MX	🔓 Insecure	View
2026-06-18 08:02:05	1182ms	2 NS 2 A 4 MX	🔓 Insecure	View