skilltree.dk

📜 Historical scan 2026-06-17 16:56:06 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

skilltree.dk is a .dk domain served by 2 nameservers (dawn.ns.cloudflare.com, will.ns.cloudflare.com). It was registered on 2 March 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by route2.mx.cloudflare.net, route3.mx.cloudflare.net and 1 more. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 132ms

Nameserver	IP addresses	PTR	ASN / ISP
dawn.ns.cloudflare.com	108.162.192.106 172.64.32.106 173.245.58.106 2606:4700:50::adf5:3a6a 2803:f800:50::6ca2:c06a 2a06:98c1:50::ac40:206a	dawn.ns.cloudflare.com dawn.ns.cloudflare.com dawn.ns.cloudflare.com dawn.ns.cloudflare.com dawn.ns.cloudflare.com dawn.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
will.ns.cloudflare.com	108.162.193.149 172.64.33.149 173.245.59.149 2606:4700:58::adf5:3b95 2803:f800:50::6ca2:c195 2a06:98c1:50::ac40:2195	will.ns.cloudflare.com will.ns.cloudflare.com will.ns.cloudflare.com will.ns.cloudflare.com will.ns.cloudflare.com will.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 119ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.86.103	—	—	AS13335	—	—	—	—
172.67.217.214	—	—	AS13335	—	—	—	—

📧 MX Records#

3 records 112ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
37	—	route2.mx.cloudflare.net	162.159.205.17 162.159.205.18 162.159.205.19 2606:4700:f5::10 2606:4700:f5::e 2606:4700:f5::f	route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net route2.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
56	—	route3.mx.cloudflare.net	162.159.205.23 162.159.205.24 162.159.205.25 2606:4700:f5::11 2606:4700:f5::12 2606:4700:f5::13	route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net route3.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
59	—	route1.mx.cloudflare.net	162.159.205.11 162.159.205.12 162.159.205.13 2606:4700:f5::b 2606:4700:f5::c 2606:4700:f5::d	route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net route1.mx.cloudflare.net	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🔷 AAAA Records (IPv6)#

2 records 131ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::6815:5667	—	—	AS13335	—	—	—	—
2606:4700:3035::ac43:d9d6	—	—	AS13335	—	—	—	—

🔐 HTTPS Records#

1 records 139ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.86.103,172.67.217.214 ech=AEX+DQBBcQAgACCLRAjcukzv4fR8BmTwARacd6cY+leAQVPWIttYUEh6LQAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::6815:5667,2606:4700:3035::ac43:d9d6

📝 TXT Records#

1 records 251ms

TXT Record
v=spf1 include:_spf.mx.cloudflare.net ~all

✉️ SPF#

Policy	Record (skilltree.dk)
~all (soft fail)	v=spf1 include:_spf.mx.cloudflare.net ~all

📨 DMARC#

Policy	Record (_dmarc.skilltree.dk)
p=reject	v=DMARC1; p=reject;

📬 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-09 14:20:53

www	104.21.86.103 172.67.217.214 2606:4700:3035::6815:5667 2606:4700:3036::ac43:d9d6 (AS13335) (address records, no CNAME)
www vs bare domain	Same network skilltree.dk: 104.21.86.103 172.67.217.214 2606:4700:3035::6815:5667 2606:4700:3036::ac43:d9d6 (AS13335) www.skilltree.dk: 104.21.86.103 172.67.217.214 2606:4700:3035::6815:5667 2606:4700:3036::ac43:d9d6 (AS13335)
Wildcard	No

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

9 records 760ms

Service / Owner	Type	Cert association
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.route1.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route2.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	9BE5B7D47F9EFF930C11EB04D27CAE6B…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-TA · SPKI · SHA-256	59E738E674221702AF1EDB87C5200C1A…
SMTP _25._tcp.route3.mx.cloudflare.net	DANE-EE · SPKI · SHA-256	0F0C6C164A36F97E7B4C5A5B69D6F4F2…

🔐 DNSSEC#

224ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

118ms

Field	Value
Serial	2406790905
Primary NS (MNAME)	dawn.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-09 14:52:17

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2011-03-02
Expires	2027-07-31 (283d)

📋 WHOIS#

⏱️ Lookup Timing#

132ms

119ms

112ms

AAAA

131ms

TXT

251ms

CAA

142ms

HTTPS

139ms

TLSA

760ms

SOA

118ms

MTA-STS

116ms

DNSSEC

224ms

SRV

0ms

Total

2657ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 14:20:52	2902ms	2 NS 2 A 3 MX	🔓 Insecure
2026-10-08 12:36:52	3951ms	2 NS 2 A 3 MX	🔓 Insecure
2026-10-04 08:35:17	661ms	2 NS 2 A 3 MX	🔓 Insecure
2026-10-02 15:27:43	2168ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-30 15:06:47	878ms	2 NS 2 A 3 MX	🔓 Insecure
2026-09-24 20:37:24	878ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-11 06:01:14	6051ms	2 NS 2 A 3 MX	🔓 Insecure
2026-08-10 02:50:24	9669ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-27 16:49:38	2355ms	2 NS 2 A 3 MX	🔓 Insecure
2026-06-21 00:13:21	1565ms	0 NS 2 A 3 MX	🔓 Insecure
2026-06-20 23:48:44	953ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-17 16:56:06 shown	2657ms	2 NS 2 A 3 MX	🔓 Insecure