cas.dk DNS records

🖥️ Nameservers2 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 Records1 records 44ms

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 Records2 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	600s	cas-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca09::1 2a01:111:f403:ca09::4 2a01:111:f403:ca09::b 52.101.103.143 52.101.181.153 52.101.68.5 52.101.73.15	mail-db7pr03cu00601.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-am7pr05cu00103.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am9pr04cu00107.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 → 52.98.154.152
🔶 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 Records1 records 64ms

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

📝 TXT Records2 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

🔏 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)

🔐 DNSSEC89ms

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

🏷️ SOA0ms

Field	Value
Serial	2026081201
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

43ms

A

44ms

MX

35ms

AAAA

46ms

TXT

163ms

CAA

30ms

HTTPS

63ms

TLSA

4030ms

SOA

0ms

MTA-STS

69ms

DNSSEC

89ms

SRV

64ms

Total

4699ms

🕐 Scan History

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