cronborg.dk

📜 Historical scan 2026-06-16 23:04:16 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cronborg.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 5 November 2008 (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 274ms

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

🌍 A Records#

1 records 276ms

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 2026-10-11 10:15:14

www	81.95.249.158 (AS48854) (address records, no CNAME)
www vs bare domain	Same network cronborg.dk: 94.231.103.100 (AS48854) www.cronborg.dk: 81.95.249.158 (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#

385ms

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

🏷️ SOA#

234ms

Field	Value
Serial	2024071700
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 2026-10-14 12:05:35

Field	Value
Registrar	Simply.com A/S
Registered	2008-11-05
Expires	2026-11-30 (41d)

🔗 Same registrant#

3 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
dvi-energi.dk	Simply.com A/S
jordvarme.dk	Simply.com A/S
shop-dvienergi.dk	Simply.com A/S

📋 WHOIS#

⏱️ Lookup Timing#

274ms

276ms

271ms

AAAA

245ms

TXT

405ms

CAA

265ms

HTTPS

223ms

TLSA

157ms

SOA

234ms

MTA-STS

271ms

DNSSEC

385ms

SRV

0ms

Total

1315ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-01 21:16:08	502ms	4 NS 1 A 0 MX	🔒 Secure
2026-09-25 20:15:14	405ms	4 NS 1 A 0 MX	🔒 Secure
2026-08-28 01:50:48	565ms	4 NS 1 A 0 MX	🔒 Secure
2026-08-26 23:46:33	551ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-24 20:18:28	1266ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-24 17:46:07	592ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-23 22:08:06	1172ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-20 06:21:31	2710ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-17 00:01:34	56467ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-16 23:04:16 shown	1315ms	4 NS 1 A 0 MX	⚠️ Bogus
2026-06-16 23:01:59	316ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-16 23:00:11	478ms	4 NS 1 A 0 MX	🔒 Secure