nerdcave.dk

📜 Historical scan 2026-08-25 07:07:03 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

nerdcave.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 20 October 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 135.181.47.104 is hosted by Hetzner Online GmbH (AS24940) in Finland. Mail is handled by mail2.ruja.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 58ms

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 oxygen.ns.hetzner.com	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH

🌍 A Records#

1 records 71ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
135.181.47.104	3600s	static.104.47.181.135.clients.your-server.de	AS24940	Hetzner Online GmbH	135.181.0.0/16	🇫🇮 Finland	Helsinki

📧 MX Records#

1 records 66ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mail2.ruja.dk	2a01:4f9:c010:1473::1 95.216.156.129	mail2.ruja.dk mail2.ruja.dk	AS24940 Hetzner Online GmbH AS24940 Hetzner Online GmbH

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	135.181.47.104
🔶 Autoconfig	135.181.47.104

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 416ms

TXT Record
google-site-verification=BQTHuDUy0eiKWkTKgRGxnYocyddacn4wc5FhJi2z67M
v=spf1 ip4:95.216.156.129 ip6:2a01:4f9:c010:1473::1/128 mx -all

✉️ SPF#

Policy	Record (nerdcave.dk)
-all (hard fail)	v=spf1 ip4:95.216.156.129 ip6:2a01:4f9:c010:1473::1/128 mx -all

📨 DMARC#

Policy	Record (_dmarc.nerdcave.dk)
p=none (monitor only)	v=DMARC1; p=none

📬 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 05:18:47

www	135.181.47.104 (AS24940) (address records, no CNAME)
www vs bare domain	Same network nerdcave.dk: 135.181.47.104 (AS24940) www.nerdcave.dk: 135.181.47.104 (AS24940)
Wildcard	Yes: any name under the zone resolves

✍️ 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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

121ms

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	2025120400
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 2026-10-14 05:01:46

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2021-10-20
Expires	2027-10-19 (367d)

🔗 Same registrant#

4 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
3dbyen.dk	Punktum dk A/S (direct)
bruunpetersen.dk	Punktum dk A/S (direct)
homonoveller.dk	Punktum dk A/S (direct)
nykode.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

58ms

71ms

66ms

AAAA

82ms

TXT

416ms

CAA

79ms

HTTPS

60ms

TLSA

157ms

SOA

0ms

MTA-STS

231ms

DNSSEC

121ms

SRV

126ms

Total

2650ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 03:07:59	1167ms	3 NS 1 A 1 MX	🔓 Insecure
2026-08-25 07:07:03 shown	2650ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-29 01:02:52	1366ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-24 20:47:52	1122ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-22 09:00:26	1182ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 04:32:37	1062ms	3 NS 1 A 1 MX	🔓 Insecure