cz.dk

📜 Historical scan 2026-06-24 17:00:26 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cz.dk is a .dk domain served by 2 nameservers (bradley.ns.cloudflare.com, nadia.ns.cloudflare.com). It was registered on 27 November 2016 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.61.158 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by cz-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, publishes a DMARC policy and is reachable over IPv6. 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 49ms

Nameserver	IP addresses	PTR	ASN / ISP
bradley.ns.cloudflare.com	108.162.195.35 162.159.44.35 172.64.35.35 2606:4700:58::a29f:2c23 2803:f800:50::6ca2:c323 2a06:98c1:50::ac40:2323	bradley.ns.cloudflare.com bradley.ns.cloudflare.com bradley.ns.cloudflare.com bradley.ns.cloudflare.com bradley.ns.cloudflare.com bradley.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
nadia.ns.cloudflare.com	108.162.192.207 172.64.32.207 173.245.58.207 2606:4700:50::adf5:3acf 2803:f800:50::6ca2:c0cf 2a06:98c1:50::ac40:20cf	nadia.ns.cloudflare.com nadia.ns.cloudflare.com nadia.ns.cloudflare.com nadia.ns.cloudflare.com nadia.ns.cloudflare.com nadia.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records#

2 records 70ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.61.158	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.211.141	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	cz-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::a 2a01:111:f403:ca04::f 2a01:111:f403:ca09::5 52.101.68.18 52.101.68.39 52.101.73.26 52.101.73.28	mail-db5pr02cu00100.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-as9pr05cu01302.inbound.protection.outlook.com mail-am7pr05cu00204.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.56

🔷 AAAA Records (IPv6)#

2 records 54ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3031::ac43:d38d	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::6815:3d9e	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 71ms

Priority	Target	SvcParams
1 service	.	alpn="h3,h2" ipv4hint=104.21.61.158,172.67.211.141 ech=AEX+DQBBuQAgACAvm/0aBCPA8lL0W8BJGlY+aQG5mSltXPg28U+pnur1XwAEAAEAAQASY2xvdWRmbGFyZS1lY2guY29tAAA= ipv6hint=2606:4700:3031::ac43:d38d,2606:4700:3037::6815:3d9e

📝 TXT Records#

4 records 201ms

TXT Record
anthropic-domain-verification-e6pc63=NT5zZVb3ncHCAlMXoshQPAv2W
bw=VDBW5QpDu3sqi1es8zCR6NjKdJs8aPoosTHmzmtM0yGE
mailerlite-domain-verification=ba3d440a6c7ac65fc811edeab9db90ee1088e752
v=spf1 include:spf.protection.outlook.com include:_spf.mlsend.com ~all

✉️ SPF#

Policy	Record (cz.dk)
~all (soft fail)	v=spf1 include:spf.protection.outlook.com include:_spf.mlsend.com ~all

📨 DMARC#

Policy	Record (_dmarc.cz.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:1daec76b620b4216ae94509e4a81f4b8@dmarc-reports.cloudflare.net

📬 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 2026-10-16 21:51:13

www	104.21.61.158 172.67.211.141 2606:4700:3031::ac43:d38d 2606:4700:3037::6815:3d9e (AS13335) (address records, no CNAME)
www vs bare domain	Same network cz.dk: 104.21.61.158 172.67.211.141 2606:4700:3031::ac43:d38d 2606:4700:3037::6815:3d9e (AS13335) www.cz.dk: 104.21.61.158 172.67.211.141 2606:4700:3031::ac43:d38d 2606:4700:3037::6815:3d9e (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-cz-dk._domainkey.aventio.p-v1.dkim.mail.microsoft	RSA · ~2048 bit
selector2	selector2-cz-dk._domainkey.aventio.p-v1.dkim.mail.microsoft	RSA · ~2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 SPF check#

zone-wide SPF report

DNS lookups: 2/10 · policy: ~all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

111ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2407603102
Primary NS (MNAME)	bradley.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-16 22:23:55

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2016-11-27
Expires	2026-11-30 (43d)

🔗 Same registrant#

5 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
ai-telefonassistent.dk	CURANET A/S
brugttech.dk	CURANET A/S
kalumwineyard.dk	CURANET A/S
telefonløsning.dk	Punktum dk A/S (direct)
visminskærm.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

49ms

70ms

49ms

AAAA

54ms

TXT

201ms

CAA

49ms

HTTPS

71ms

TLSA

147ms

SOA

0ms

MTA-STS

61ms

DNSSEC

111ms

SRV

90ms

Total

1122ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 21:51:13	2028ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-11 12:50:35	1212ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-09 02:56:22	1596ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-07 18:26:40	1488ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-05 17:00:36	1771ms	2 NS 2 A 1 MX	🔒 Secure
2026-10-02 16:53:44	2582ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-30 16:45:33	984ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-27 16:23:28	802ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-26 05:20:09	2115ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-24 04:14:26	940ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-07 19:25:18	2220ms	2 NS 2 A 1 MX	🔒 Secure
2026-09-03 06:14:14	1805ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-30 16:20:01	974ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-13 02:44:40	2160ms	2 NS 2 A 1 MX	🔒 Secure
2026-08-07 14:51:43	1590ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-15 00:05:36	1607ms	2 NS 2 A 1 MX	🔒 Secure
2026-07-09 22:23:29	1952ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-24 17:00:26 shown	1122ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-20 17:58:02	1563ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-16 23:42:36	2813ms	2 NS 2 A 1 MX	🔒 Secure
2026-06-16 23:31:34	1871ms	2 NS 2 A 1 MX	🔒 Secure