cardio.dk

Records from scan: 2026-10-08 05:44:43 · 1007ms total · last checked 2026-10-17 18:43 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cardio.dk is a .dk domain served by 2 nameservers (kanye.ns.cloudflare.com, maria.ns.cloudflare.com). It was registered on 18 November 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 104.21.36.235 is hosted by Cloudflare, Inc. (AS13335). Mail is handled by cardio-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. Below are all of its DNS records from our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 42ms

Nameserver	IP addresses	PTR	ASN / ISP
kanye.ns.cloudflare.com	108.162.193.189 172.64.33.189 173.245.59.189 2606:4700:58::adf5:3bbd 2803:f800:50::6ca2:c1bd 2a06:98c1:50::ac40:21bd	kanye.ns.cloudflare.com kanye.ns.cloudflare.com kanye.ns.cloudflare.com kanye.ns.cloudflare.com kanye.ns.cloudflare.com kanye.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
maria.ns.cloudflare.com	108.162.192.192 172.64.32.192 173.245.58.192 2606:4700:50::adf5:3ac0 2803:f800:50::6ca2:c0c0 2a06:98c1:50::ac40:20c0	maria.ns.cloudflare.com maria.ns.cloudflare.com maria.ns.cloudflare.com maria.ns.cloudflare.com maria.ns.cloudflare.com maria.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 30ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
104.21.36.235	300s	—	AS13335	Cloudflare, Inc.	104.21.0.0/17	—	—
172.67.200.207	300s	—	AS13335	Cloudflare, Inc.	172.67.128.0/17	—	—

📧 MX Records#

1 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	cardio-dk.mail.protection.outlook.com	2a01:111:f403:ca04::c 2a01:111:f403:ca09::22 2a01:111:f403:ca09::28 2a01:111:f403:ca3c::8 52.101.209.28 52.101.68.10 52.101.68.12 52.101.73.145	mail-db9pr02cu00204.inbound.protection.outlook.com mail-am7pr02cu00302.inbound.protection.outlook.com mail-am6pr02cu00300.inbound.protection.outlook.com mail-zrxpr05cu00100.inbound.protection.outlook.com mail-cpjpr05cu00104.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am6pr02cu00301.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 39ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2606:4700:3033::6815:24eb	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—
2606:4700:3037::ac43:c8cf	300s	—	AS13335	Cloudflare, Inc.	2606:4700:3000:0:0:0:0:0/42	—	—

🔐 HTTPS Records#

1 records 43ms

Priority	Target	SvcParams
1 service	.	alpn="h2" ipv4hint=104.21.36.235,172.67.200.207 ipv6hint=2606:4700:3033::6815:24eb,2606:4700:3037::ac43:c8cf

📝 TXT Records#

4 records 164ms

TXT Record
google-site-verification=OWOrI1mGbKySm3c1F7vn8A_UBs8JeDnIObEiGTq7q7I
google-site-verification=xT2tiHWe-E9bSXWzlryWVmGsky5xnL5xZc7opPnz-xg
MS=ms88793622
v=spf1 +a +mx +a:vps383.rackhosting.com include:spf.rackhosting.com include:spf.protection.outlook.com include:amazonses.com -all

✉️ SPF#

Policy	Record (cardio.dk)
-all (hard fail)	v=spf1 +a +mx +a:vps383.rackhosting.com include:spf.rackhosting.com include:spf.protection.outlook.com include:amazonses.com -all

📨 DMARC#

Policy	Record (_dmarc.cardio.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:83ca6dfc68dc43698864c491bc72c202@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#

checked 2026-10-08 05:44:43

www	104.21.36.235 172.67.200.207 2606:4700:3033::6815:24eb 2606:4700:3037::ac43:c8cf (AS13335) (address records, no CNAME)
www vs bare domain	Same network cardio.dk: 104.21.36.235 172.67.200.207 2606:4700:3033::6815:24eb 2606:4700:3037::ac43:c8cf (AS13335) www.cardio.dk: 104.21.36.235 172.67.200.207 2606:4700:3033::6815:24eb 2606:4700:3037::ac43:c8cf (AS13335)
Wildcard	No
Denial of existence	Compact NSEC (RFC 9824, "black lies") not walkable
CDS / CDNSKEY	Delete signal: the zone asks the registry to remove its DS (go insecure) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-cardio-dk._domainkey.cardiodk.a-v1.dkim.mail.microsoft	RSA · ~2048 bit
selector2	selector2-cardio-dk._domainkey.cardiodk.a-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: 6/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

56ms

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

🏷️ SOA#

27ms

Field	Value
Serial	2416147705
Primary NS (MNAME)	kanye.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration#

WHOIS fetched 2026-10-12 00:57:55

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-11-18
Expires	2026-12-31 (74d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

42ms

30ms

35ms

AAAA

39ms

TXT

164ms

CAA

40ms

HTTPS

43ms

TLSA

606ms

SOA

27ms

MTA-STS

47ms

DNSSEC

56ms

SRV

65ms

Total

1007ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 05:44:43 shown	1007ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-30 18:46:11	1305ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-29 23:35:52	1334ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-28 23:26:11	1597ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-23 22:21:15	1071ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-19 06:40:39	1810ms	2 NS 2 A 1 MX	🔓 Insecure
2026-09-06 15:22:11	1435ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-27 16:55:18	1223ms	2 NS 2 A 1 MX	🔓 Insecure
2026-08-12 09:35:41	9612ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-24 02:35:08	1721ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-23 01:22:00	10091ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-19 06:22:29	2173ms	2 NS 2 A 1 MX	🔓 Insecure
2026-07-18 02:24:20	9380ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-28 19:43:30	1341ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-25 19:29:38	1054ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-23 23:12:27	1162ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-23 15:54:30	1720ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-21 16:21:05	1870ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-21 09:25:34	1005ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-21 05:16:17	2774ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-19 08:41:21	1199ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 19:21:51	1326ms	2 NS 2 A 1 MX	🔓 Insecure
2026-06-16 19:20:32	798ms	2 NS 2 A 1 MX	🔓 Insecure