cas.dk

📜 Historical scan 2026-10-01 03:46:21 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cas.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 31 July 2002 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 109.238.53.235 is hosted by Sentia Denmark A/S (AS47292) in Denmark. Mail is handled by cas-dk.mail.protection.outlook.com, mail02.cas.dk. 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#

2 records 43ms

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 47ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
109.238.53.235	600s	—	AS47292	Sentia Denmark A/S	109.238.48.0/21	🇩🇰 Denmark	—

📧 MX Records#

2 records 32ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	cas-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca09::24 2a01:111:f403:ca09::a 2a01:111:f403:ca48::c 52.101.181.153 52.101.73.120 52.101.73.153 52.101.91.159	mail-dbapr03cu00100.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-am7pr02cu00300.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-matpr04cu00207.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
10	43200s	mail02.cas.dk	89.221.166.185	—	AS31027 GlobalConnect A/S

📧 Autodiscover / Autoconfig#

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.40
🔶 Autoconfig	cas.dk → 109.238.53.235

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 77ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 163ms

TXT Record
MS=ms55701581
v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:spf.mandrillapp.com a:cas05.cashosting.dk -all

✉️ SPF#

Policy	Record (cas.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:servers.mcsv.net include:spf.mandrillapp.com a:cas05.cashosting.dk -all

📨 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 2026-10-13 15:49:26

www CNAME	cas.dk (all on cas.dk) → 109.238.53.235 (AS47292)
www vs bare domain	Same network cas.dk: 109.238.53.235 (AS47292) www.cas.dk: 109.238.53.235 (AS47292)
Wildcard	Yes: any name under the zone resolves
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

3 found

Selector	CNAME	Key
k1	dkim.mcsv.net	RSA · ~1024 bit below 2048 bit
s1	s1.domainkey.u4549169.wl170.sendgrid.net	RSA · ~2048 bit
s2	s2.domainkey.u4549169.wl170.sendgrid.net	RSA · ~1024 bit below 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: 4/10 · policy: -all

No problems found

🔏 ACME Challenge#

Type	Name	Value
CNAME	_acme-challenge.cas.dk	cas.dk

🔗 TLSA / DANE#

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

🔐 DNSSEC#

118ms

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

🏷️ SOA#

30ms

Field	Value
Serial	2026091101
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 2026-10-06 19:47:41

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2002-07-31
Expires	2027-09-30 (346d)

📋 WHOIS#

⏱️ Lookup Timing#

43ms

47ms

32ms

AAAA

29ms

TXT

163ms

CAA

36ms

HTTPS

32ms

TLSA

310ms

SOA

30ms

MTA-STS

42ms

DNSSEC

118ms

SRV

77ms

Total

925ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-13 15:49:26	2898ms	2 NS 1 A 2 MX	🔒 Secure
2026-10-03 13:01:23	1301ms	2 NS 1 A 2 MX	🔒 Secure
2026-10-01 03:46:21 shown	925ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-15 08:25:42	1621ms	2 NS 1 A 2 MX	🔒 Secure
2026-09-05 19:30:13	11203ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-26 10:21:25	4699ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-22 07:39:36	2219ms	2 NS 1 A 2 MX	🔒 Secure
2026-08-12 07:04:18	1362ms	2 NS 1 A 2 MX	🔒 Secure
2026-07-18 23:02:59	9047ms	2 NS 1 A 2 MX	🔒 Secure
2026-07-16 13:47:18	8975ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-20 16:03:52	1427ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-19 14:19:46	1385ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-16 21:35:49	61100ms	2 NS 1 A 2 MX	🔒 Secure
2026-06-16 19:52:07	2485ms	2 NS 1 A 2 MX	⚠️ Bogus
2026-06-16 19:30:16	823ms	2 NS 1 A 2 MX	🔒 Secure