bookstudenterkoersel.dk

📜 Historical scan 2026-06-16 16:06:26 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

bookstudenterkoersel.dk is a .dk domain served by 4 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com and 1 more). It was registered on 26 April 2013 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 94.231.103.100 is hosted by team.blue Denmark A/S (AS48854) in Denmark. The zone is DNSSEC-signed but currently fails validation, has no 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#

4 records 98ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	—	—	—
ns2.simply.com	—	—	—
ns3.simply.com	—	—	—
ns4.simply.com	—	—	—

🌍 A Records#

1 records 34ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.103.100	—	dnsforward.simply.com	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records#

📧

No MX records found

🔷 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#

latest probe, not this scan · checked 2026-10-08 06:54:07

www	94.231.103.100 (AS48854) (address records, no CNAME)
www vs bare domain	Same network bookstudenterkoersel.dk: 94.231.103.100 (AS48854) www.bookstudenterkoersel.dk: 94.231.103.100 (AS48854)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

🔗 TLSA / DANE#

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

🔐 DNSSEC#

90ms

Check	Result
Validation Status	⚠️ Bogus
AD Flag (resolver validates)	✗ Not set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	resolution failed: insecurity proof failed

🏷️ SOA#

35ms

Field	Value
Serial	2022042501
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-06 10:20:15

Field	Value
Registrar	Simply.com A/S
Registered	2013-04-26
Expires	2027-04-30 (189d)

📋 WHOIS#

⏱️ Lookup Timing#

98ms

34ms

32ms

AAAA

99ms

TXT

120ms

CAA

44ms

HTTPS

35ms

TLSA

44ms

SOA

35ms

MTA-STS

51ms

DNSSEC

90ms

SRV

0ms

Total

299ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-03 05:52:27	357ms	4 NS 1 A 0 MX	🔒 Secure
2026-10-02 14:26:00	288ms	4 NS 1 A 0 MX	🔒 Secure
2026-08-28 01:55:07	421ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-23 01:42:49	511ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-16 16:08:59	2164ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-16 16:08:15	1063ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-16 16:06:26 shown	299ms	4 NS 1 A 0 MX	⚠️ Bogus
2026-06-16 16:00:51	346ms	4 NS 1 A 0 MX	🔒 Secure