4book.dk

📜 Historical scan 2026-09-24 17:23:08 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

4book.dk is a .dk domain served by 2 nameservers (ns5.kasserver.com, ns6.kasserver.com). It was registered on 22 June 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 85.13.146.132 is hosted by Neue Medien Muennich GmbH (AS34788) in Germany. Mail is handled by w012a775.kasserver.com. 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#

2 records 61ms

Nameserver	IP addresses	PTR	ASN / ISP
ns5.kasserver.com	85.13.128.3	ns5.kasserver.com	AS34788 Neue Medien Muennich GmbH
ns6.kasserver.com	85.13.159.101	ns6.kasserver.com	AS34788 Neue Medien Muennich GmbH

🌍 A Records#

1 records 2041ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
85.13.146.132	7198s	dd27908.kasserver.com	AS34788	Neue Medien Muennich GmbH	85.13.128.0/18	🇩🇪 Germany	—

📧 MX Records#

1 records 51ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	7200s	w012a775.kasserver.com	85.13.146.132	dd27908.kasserver.com	AS34788 Neue Medien Muennich GmbH

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	85.13.146.132
🔶 Autoconfig	85.13.146.132

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 358ms

TXT Record
v=spf1 a mx include:spf.kasserver.com ~all

✉️ SPF#

Policy	Record (4book.dk)
~all (soft fail)	v=spf1 a mx include:spf.kasserver.com ~all

📨 DMARC#

Policy	Record (_dmarc.4book.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 10:53:02

www CNAME	w012a775.kasserver.com (all on kasserver.com) → 85.13.146.132 (AS34788)
www vs bare domain	Same network 4book.dk: 85.13.146.132 (AS34788) www.4book.dk: 85.13.146.132 (AS34788)
Wildcard	Yes: any name under the zone resolves

🔎 SPF check#

zone-wide SPF report

DNS lookups: 3/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

2069ms

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	2605270011
Primary NS (MNAME)	ns5.kasserver.com
Responsible (RNAME)	hostmaster@kasserver.com
Refresh	28800s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	7200s

📋 Registration#

WHOIS fetched 2026-10-12 14:20:33

Field	Value
Registrar	RegistryGate GmbH
Registered	2021-06-22
Expires	2027-06-30 (256d)

🔗 Same registrant#

1 domain

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
bookingbird.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

61ms

2041ms

51ms

AAAA

61ms

TXT

358ms

CAA

45ms

HTTPS

53ms

TLSA

124ms

SOA

0ms

MTA-STS

98ms

DNSSEC

2069ms

SRV

1204ms

Total

2521ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 10:53:02	1525ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-30 07:14:16	726ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-24 17:23:08 shown	2521ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-26 19:25:38	773ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-24 20:30:54	818ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-21 17:42:50	639ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-21 07:44:38	1192ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 12:52:29	1172ms	2 NS 1 A 1 MX	🔓 Insecure