c-klasse.dk

📜 Historical scan 2026-06-16 18:40:03 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

c-klasse.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 20 September 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 87.104.6.138 is hosted by FIBIA P/S (AS44869) in Denmark. The zone is DNSSEC-signed and validates, 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 132ms

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

🌍 A Records#

1 records 105ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
87.104.6.138	—	87.104.6.138.static.fibianet.dk	AS44869	FIBIA P/S	87.104.0.0/18	🇩🇰 Denmark	Sorø

📧 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 19:11:50

www	NXDOMAIN
www vs bare domain	www does not resolve c-klasse.dk: 87.104.6.138 (AS44869) www.c-klasse.dk: no address (all like this)
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#

316ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

113ms

Field	Value
Serial	2022092204
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 2026-10-13 23:55:06

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2011-09-20
Expires	2030-09-30 (1444d)

🔗 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
b-klasse.dk	Punktum dk A/S (direct)
simpleidea.dk	Punktum dk A/S (direct)
zxspectrum.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

132ms

105ms

113ms

AAAA

131ms

TXT

174ms

CAA

112ms

HTTPS

111ms

TLSA

86ms

SOA

113ms

MTA-STS

102ms

DNSSEC

316ms

SRV

0ms

Total

655ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 19:11:50	1778ms	4 NS 1 A 0 MX	🔒 Secure
2026-10-02 14:50:16	576ms	4 NS 1 A 0 MX	🔒 Secure
2026-07-02 00:40:14	626ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-16 18:45:46	316ms	4 NS 1 A 0 MX	🔒 Secure
2026-06-16 18:40:03 shown	655ms	4 NS 1 A 0 MX	🔒 Secure