cau.dk

📜 Historical scan 2026-06-16 19:46:25 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cau.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 13 July 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.199 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by dk.mx1.mailanyone.net, dk.mx2.mx25.net and 2 more. The zone is DNSSEC-signed and validates, publishes a 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 73ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	—	—	—
ns02.one.com	—	—	—

🌍 A Records#

1 records 78ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.199	—	linux14.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

4 records 64ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	—	dk.mx1.mailanyone.net	192.162.219.155	mx41.electric.net	AS16509 Amazon.com, Inc.
20	—	dk.mx2.mx25.net	192.162.219.49	mx41.electric.net	AS16509 Amazon.com, Inc.
30	—	dk.mx3.mailanyone.net	192.162.219.255	mx41.electric.net	AS16509 Amazon.com, Inc.
40	—	dk.mx4.mx25.net	192.162.219.255	mx41.electric.net	AS16509 Amazon.com, Inc.

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

3 records 261ms

TXT Record
MS=ms45106207
v=DMARC1; p=none; rua=mailto:admin@cau.dk; ruf=mailto:admin@cau.dk; rf=afrf ;pct=100
v=spf1 ip4:80.160.69.242 ip4:93.191.155.217 include:spf.protection.outlook.com include:smtp-out12.electric.net include:spf.comendosystems.com include:spf.mailanyone.net include:userinclude.dme3ds1.com -all

✉️ SPF#

Policy	Record (cau.dk)
-all (hard fail)	v=spf1 ip4:80.160.69.242 ip4:93.191.155.217 include:spf.protection.outlook.com include:smtp-out12.electric.net include:spf.comendosystems.com include:spf.mailanyone.net include:userinclude.dme3ds1.com -all

📨 DMARC#

Policy	Record (_dmarc.cau.dk)
p=none (monitor only)	v=DMARC1; p=none

📬 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 2026-10-12 19:29:10

www	185.21.40.199 (AS48854) (address records, no CNAME)
www vs bare domain	Same network cau.dk: 185.21.40.199 (AS48854) www.cau.dk: 185.21.40.199 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 8/10 · policy: -all

warn 8 of the 10 allowed DNS lookups used: one more include can break SPF

🔗 TLSA / DANE#

8 records 2092ms

Service / Owner	Type	Cert association
SMTP _25._tcp.dk.mx1.mailanyone.net	DANE-EE · Full cert · SHA-256	443DFE296DAC92DD311766BAD0B04CC7…
SMTP _25._tcp.dk.mx1.mailanyone.net	DANE-EE · Full cert · SHA-256	1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx2.mx25.net	DANE-EE · Full cert · SHA-256	1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx2.mx25.net	DANE-EE · Full cert · SHA-256	443DFE296DAC92DD311766BAD0B04CC7…
SMTP _25._tcp.dk.mx3.mailanyone.net	DANE-EE · Full cert · SHA-256	1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx3.mailanyone.net	DANE-EE · Full cert · SHA-256	443DFE296DAC92DD311766BAD0B04CC7…
SMTP _25._tcp.dk.mx4.mx25.net	DANE-EE · Full cert · SHA-256	1AAAC405385DEB66C25E43D629569F6C…
SMTP _25._tcp.dk.mx4.mx25.net	DANE-EE · Full cert · SHA-256	443DFE296DAC92DD311766BAD0B04CC7…

🔐 DNSSEC#

195ms

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

🏷️ SOA#

77ms

Field	Value
Serial	2026061201
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 2026-10-11 03:13:39

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-07-13
Expires	2027-09-30 (348d)

📋 WHOIS#

⏱️ Lookup Timing#

73ms

78ms

64ms

AAAA

81ms

TXT

261ms

CAA

60ms

HTTPS

59ms

TLSA

2092ms

SOA

77ms

MTA-STS

91ms

DNSSEC

195ms

SRV

0ms

Total

2916ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 19:29:10	708ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-29 22:14:48	725ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-25 23:59:45	1053ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-14 23:17:06	1071ms	2 NS 1 A 4 MX	🔒 Secure
2026-09-12 19:04:47	1013ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-31 11:10:26	1078ms	2 NS 1 A 4 MX	🔒 Secure
2026-08-13 00:09:02	5716ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-28 12:22:14	3128ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-19 01:37:31	9663ms	2 NS 1 A 4 MX	🔒 Secure
2026-07-15 00:45:08	1413ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-27 05:32:14	925ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-26 08:06:11	684ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-20 23:04:28	659ms	2 NS 1 A 4 MX	🔒 Secure
2026-06-16 19:46:25 shown	2916ms	2 NS 1 A 4 MX	🔒 Secure