czacademy.dk

📜 Historical scan 2026-09-11 00:18:45 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

czacademy.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 13 January 2023 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 199.36.158.100 is hosted by Fastly, Inc. (AS54113) in United States. Mail is handled by .. The zone is not DNSSEC-signed, 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#

2 records 34ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 48ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
199.36.158.100	3600s	—	AS54113	Fastly, Inc.	199.36.158.0/24	🇺🇸 United States	—

📧 MX Records#

1 records 56ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	. Null MX — domain accepts no email (RFC 7505)

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 199ms

TXT Record
hosting-site=czcacademy-cz

✉️ 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 2026-10-23 11:17:53

www CNAME	czcacademy-cz.web.app (all on web.app) → 199.36.158.100 2620:0:890::100 (AS54113)
www vs bare domain	Same network czacademy.dk: 199.36.158.100 (AS54113) www.czacademy.dk: 199.36.158.100 2620:0:890::100 (AS54113)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

98ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

35ms

Field	Value
Serial	2026083109
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-24 01:22:48

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2023-01-13
Expires	2027-01-12 (79d)

🔗 Same registrant#

4 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
coastzone.dk	Punktum dk A/S (direct)
czif.dk	Punktum dk A/S (direct)
czqr.dk	Punktum dk A/S (direct)
indendørs-teambuilding.dk	ONE.COM A/S

📋 WHOIS#

⏱️ Lookup Timing#

34ms

48ms

56ms

AAAA

61ms

TXT

199ms

CAA

36ms

HTTPS

45ms

TLSA

94ms

SOA

35ms

MTA-STS

74ms

DNSSEC

98ms

SRV

77ms

Total

4565ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-23 11:17:53	795ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-25 21:44:03	487ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-11 00:18:45 shown	4565ms	2 NS 1 A 1 MX	🔓 Insecure
2026-09-03 15:17:57	594ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-30 20:01:27	454ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-27 21:31:34	512ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-19 07:41:41	29009ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-07 19:26:14	8532ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-29 00:25:21	4639ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-25 21:13:46	4550ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-09 00:24:19	724ms	2 NS 1 A 1 MX	🔓 Insecure
2026-07-01 21:01:05	772ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-16 23:51:54	1024ms	2 NS 1 A 0 MX	🔓 Insecure
2026-06-16 23:31:09	465ms	2 NS 1 A 0 MX	🔓 Insecure