book-nu.dk

Records from scan: 2026-10-09 13:07:20  ·  619ms total  ·  last checked 2026-10-16 21:12 (unchanged)
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

book-nu.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 14 November 2007 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.150.199.163 is hosted by Adeo Datacenter ApS (AS202914) in Denmark. Mail is handled by mail.book-nu.dk.book-nu.dk. The zone is not DNSSEC-signed, has no 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   41ms
NameserverIP addressesPTRASN / 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   50ms
IPTTLPTRASNISP / OrgCIDRCountryCity
185.150.199.163 86400s 185-150-199-163.justlinux.dk AS202914 Adeo Datacenter ApS 185.150.196.0/22 🇩🇰 Denmark Nivå

📧 MX Records#

1 records   50ms
PriorityTTLMail ServerIP addressesPTRASN
10 86400s mail.book-nu.dk.book-nu.dk 185.150.199.163 185-150-199-163.justlinux.dk AS202914 Adeo Datacenter ApS

📧 Autodiscover / Autoconfig#

ServiceCNAME / IP
🔷 Autodiscoverbook-nu.dk → 185.150.199.163
🔶 Autoconfigbook-nu.dk → 185.150.199.163

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 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#

checked 2026-10-09 13:07:20
www CNAMEbook-nu.dk (all on book-nu.dk)
www vs bare domainSame network
book-nu.dk: 185.150.199.163 (AS202914)
www.book-nu.dk: 185.150.199.163 (AS202914)
WildcardYes: any name under the zone resolves

🔏 ACME Challenge#

TypeNameValue
CNAME _acme-challenge.book-nu.dk book-nu.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

61ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✗ Not found
Flagsunsigned answer

🏷️ SOA#

55ms
FieldValue
Serial2026041600
Primary NS (MNAME)hydrogen.ns.hetzner.com
Responsible (RNAME)dns@hetzner.com
Refresh86400s
Retry10800s
Expire3600000s
Minimum (neg-cache TTL)3600s

📋 Registration#

WHOIS fetched 2026-10-13 18:30:44
FieldValue
RegistrarPunktum dk A/S (direct)
Registered2007-11-14
Expires2027-08-31 (318d)

🔗 Same registrant#

2 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).

DomainRegistrar
ajg.dkPunktum dk A/S (direct)
nettopriser.dkPunktum dk A/S (direct)
📋 WHOIS#

⏱️ Lookup Timing#

NS
41ms
A
50ms
MX
50ms
AAAA
53ms
TXT
235ms
CAA
52ms
HTTPS
39ms
TLSA
133ms
SOA
55ms
MTA-STS
61ms
DNSSEC
61ms
SRV
104ms
Total
619ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-09 13:07:20 shown 619ms 3 NS 1 A 1 MX 🔓 Insecure
2026-08-26 14:08:26 2992ms 3 NS 1 A 1 MX 🔓 Insecure
2026-06-24 05:38:53 3420ms 3 NS 1 A 1 MX 🔓 Insecure
2026-06-22 01:30:55 1099ms 0 NS 0 A 0 MX ❓ Unknown
2026-06-16 15:55:54 2682ms 3 NS 1 A 1 MX 🔓 Insecure
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