hydrabooks.dk

Records from scan: 2026-09-30 22:20:29 · 856ms total · last checked 2026-10-16 17:56 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

hydrabooks.dk is a .dk domain served by 3 nameservers (helium.ns.hetzner.de, hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 91.100.105.193 is hosted by DKTV A/S (AS15516) in Denmark. Mail is handled by mail.nathue.dk, smtp.nathue.dk. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

3 records 56ms

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 62ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
91.100.105.193	86400s	91.100.105.193.generic-hostname.arrownet.dk	AS15516	DKTV A/S	91.100.0.0/15	🇩🇰 Denmark	Brønshøj

📧 MX Records#

2 records 67ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	86400s	mail.nathue.dk	142.132.188.141	mail.nathue.dk	AS24940 Hetzner Online GmbH
15	86400s	smtp.nathue.dk	142.132.188.141	mail.nathue.dk	AS24940 Hetzner Online GmbH

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 302ms

TXT Record
v=spf1 mx ip4:142.132.188.141 ip4:80.71.130.71 ip4:77.33.126.180 -all

✉️ SPF#

Policy	Record (hydrabooks.dk)
-all (hard fail)	v=spf1 mx ip4:142.132.188.141 ip4:80.71.130.71 ip4:77.33.126.180 -all

📨 DMARC#

Policy	Record (_dmarc.hydrabooks.dk)
p=quarantine	v=DMARC1; p=quarantine; 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#

checked 2026-10-10 06:05:53

www	91.100.105.193 (AS15516) (address records, no CNAME)
www vs bare domain	Same network hydrabooks.dk: 91.100.105.193 (AS15516) www.hydrabooks.dk: 91.100.105.193 (AS15516)
Wildcard	No

🔎 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#

88ms

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

🏷️ SOA#

71ms

Field	Value
Serial	2026052601
Primary NS (MNAME)	hydrogen.ns.hetzner.com
Responsible (RNAME)	dns@hetzner.com
Refresh	86400s
Retry	10800s
Expire	3600000s
Minimum (neg-cache TTL)	3600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

56ms

62ms

67ms

AAAA

64ms

TXT

302ms

CAA

56ms

HTTPS

81ms

TLSA

150ms

SOA

71ms

MTA-STS

74ms

DNSSEC

88ms

SRV

111ms

Total

856ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 22:20:29 shown	856ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-23 18:20:20	1053ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-23 12:24:17	1009ms	3 NS 1 A 2 MX	🔓 Insecure
2026-06-17 14:25:26	24085ms	3 NS 1 A 2 MX	🔓 Insecure