gnuskole.dk

📜 Historical scan 2026-09-24 20:51:14 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

gnuskole.dk is a .dk domain served by 2 nameservers (kirk.ns.cloudflare.com, serena.ns.cloudflare.com). It was registered on 18 June 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.13.216 is hosted by Cloudflare, Inc. (AS13335). The zone is not DNSSEC-signed, has no 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 35ms

Nameserver	IP addresses	PTR	ASN / ISP
kirk.ns.cloudflare.com	108.162.193.192 172.64.33.192 173.245.59.192 2606:4700:58::adf5:3bc0 2803:f800:50::6ca2:c1c0 2a06:98c1:50::ac40:21c0	kirk.ns.cloudflare.com kirk.ns.cloudflare.com kirk.ns.cloudflare.com kirk.ns.cloudflare.com kirk.ns.cloudflare.com kirk.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
serena.ns.cloudflare.com	108.162.192.220 172.64.32.220 173.245.58.220 2606:4700:50::adf5:3adc 2803:f800:50::6ca2:c0dc 2a06:98c1:50::ac40:20dc	serena.ns.cloudflare.com serena.ns.cloudflare.com serena.ns.cloudflare.com serena.ns.cloudflare.com serena.ns.cloudflare.com serena.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 43ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.13.216	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.133.62	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

2 records 45ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3034::ac43:853e	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:dd8	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 39ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.13.216,172.67.133.62 ech=AEX+DQBB1gAgACCpAaf7d1k21wYqJxvQwPKZPCU/qMtrmwHPHBBFzpamFgAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3034::ac43:853e,2606:4700:3037::6815:dd8

📝 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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-14 13:47:30

www	104.21.13.216 172.67.133.62 2606:4700:3034::ac43:853e 2606:4700:3037::6815:dd8 (AS13335) (address records, no CNAME)
www vs bare domain	Same network gnuskole.dk: 104.21.13.216 172.67.133.62 2606:4700:3034::ac43:853e 2606:4700:3037::6815:dd8 (AS13335) www.gnuskole.dk: 104.21.13.216 172.67.133.62 2606:4700:3034::ac43:853e 2606:4700:3037::6815:dd8 (AS13335)
Wildcard	No

🔏 ACME Challenge#

Type	Name	Value
TXT	_acme-challenge.gnuskole.dk	9vwt5ferZ3KS-024XqYJ4HlPO2DLLkZR9Pd5AwAbo2g
TXT	_acme-challenge.gnuskole.dk	ZuemIMp8m-eVwXegcrXSvFbRgyQPS9iSrPY1D3ZX--s

🔗 TLSA / DANE#

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC#

117ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2415717685
Primary NS (MNAME)	kirk.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-14 13:58:16

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2013-06-18
Expires	2027-06-30 (252d)

📋 WHOIS#

⏱️ Lookup Timing#

35ms

43ms

44ms

AAAA

45ms

TXT

174ms

CAA

54ms

HTTPS

39ms

TLSA

47ms

SOA

0ms

MTA-STS

56ms

DNSSEC

117ms

SRV

65ms

Total

608ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-14 13:47:30	576ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-25 21:11:37	550ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-24 20:51:14 shown	608ms	2 NS 2 A 0 MX	🔓 Insecure
2026-09-19 15:58:35	9442ms	2 NS 2 A 0 MX	🔓 Insecure
2026-08-17 16:36:53	1840ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-27 17:37:13	863ms	2 NS 2 A 0 MX	🔓 Insecure
2026-07-04 13:50:10	1036ms	2 NS 2 A 0 MX	🔓 Insecure
2026-06-19 09:42:43	789ms	2 NS 2 A 0 MX	⚠️ Bogus
2026-06-17 09:47:29	544ms	2 NS 2 A 0 MX	🔓 Insecure