schule.dk

📜 Historical scan 2026-06-26 18:32:33 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

schule.dk is a .dk domain served by 3 nameservers (helium.ns.hetzner.de, hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com). It was registered on 29 April 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 217.160.174.200 is hosted by IONOS SE (AS8560) in Germany. Mail is handled by mail.schule.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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#

3 records 277ms

Nameserver	IP addresses	PTR	ASN / ISP
helium.ns.hetzner.de	193.47.99.5 2001:67c:192c::add:5	helium.ns.hetzner.de helium.ns.hetzner.de	AS12337 noris network AG AS12337 noris network AG
hydrogen.ns.hetzner.com	213.133.100.98 2a01:4f8:0:1::add:1098	hydrogen.ns.hetzner.com hydrogen.ns.hetzner.com	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH
oxygen.ns.hetzner.com	2a01:4f8:0:1::add:2992 88.198.229.192	oxygen.ns.hetzner.com —	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH

🌍 A Records#

1 records 330ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
217.160.174.200	600s	mail.schule.dk	AS8560	IONOS SE	217.160.0.0/16	🇩🇪 Germany	—

📧 MX Records#

1 records 286ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	mail.schule.dk	217.160.174.200	mail.schule.dk	AS8560 IONOS SE

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	mail.schule.dk → 217.160.174.200
🔶 Autoconfig	mail.schule.dk → 217.160.174.200

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 704ms

TXT Record
v=spf1 a mx -all

✉️ SPF#

Policy	Record (schule.dk)
-all (hard fail)	v=spf1 a mx -all

📨 DMARC#

Policy	Record (_dmarc.schule.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:webmaster@schule.dk; pct=100

📬 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 2026-10-11 02:34:24

www CNAME	schule.dk (all on schule.dk) → 217.160.174.200 (AS8560)
www vs bare domain	Same network schule.dk: 217.160.174.200 (AS8560) www.schule.dk: 217.160.174.200 (AS8560)
Wildcard	Yes: any name under the zone resolves
BIMI	v=BIMI1; l=https://digitalesklassenbuch.com/bimi/logo-tiny-ps.svg

✍️ DKIM keys#

1 found

Selector	CNAME	Key
dkim	—	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

362ms

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

🏷️ SOA#

271ms

Field	Value
Serial	2026031901
Primary NS (MNAME)	hydrogen.ns.hetzner.com
Responsible (RNAME)	dns@hetzner.com
Refresh	86400s
Retry	10800s
Expire	3600000s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-10 18:59:48

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2021-04-29
Expires	2027-04-30 (195d)

📋 WHOIS#

⏱️ Lookup Timing#

277ms

330ms

286ms

AAAA

259ms

TXT

704ms

CAA

271ms

HTTPS

290ms

TLSA

150ms

SOA

271ms

MTA-STS

314ms

DNSSEC

362ms

SRV

311ms

Total

1802ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-13 00:25:17	2542ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-27 13:06:41	2376ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-26 18:32:33 shown	1802ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-26 01:43:33	804ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-21 10:18:32	1173ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 17:30:29	973ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-19 18:31:18	649ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-17 13:35:59	1764ms	3 NS 1 A 1 MX	🔓 Insecure