cs.dk DNS records

🖥️ Nameservers2 records 55ms

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 53ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
167.233.148.102	600s	static.102.148.233.167.clients.your-server.de	AS24940	Hetzner Online GmbH	167.233.0.0/16	🇩🇪 Germany	Nuremberg

📧 MX Records3 records 60ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	600s	mx1-dk.centerasecurity.dk	128.76.60.167 128.76.60.187 89.233.19.127 89.233.19.127 89.233.19.188 89.233.19.188	mx6.centerasecurity.dk mx6.centerasecurity.dk 127.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 188.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S
10	600s	mx2-dk.centerasecurity.dk	128.76.60.168 128.76.60.169 89.233.19.128 89.233.19.128 89.233.19.129 89.233.19.129	mx6.centerasecurity.dk mx6.centerasecurity.dk 128.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk 129.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3292 TDC Holding A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S
20	600s	mx3-dk.centerasecurity.dk	128.76.60.187 89.233.19.129 89.233.19.129	mx6.centerasecurity.dk 129.0-254.19.233.89.in-addr.arpa mx14.centerasecurity.dk	AS3292 TDC Holding A/S AS3308 Norlys Digital A/S AS3308 Norlys Digital A/S

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	autodiscover.outlook.com → 40.104.116.24
🔶 Autoconfig	167.233.148.102

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 87ms

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

📝 TXT Records1 records 212ms

TXT Record
v=spf1 ip4:62.242.104.198 ip4:62.242.207.114 ip4:62.242.207.115 ip4:52.186.121.110 ip4:40.68.36.243 ip4:89.188.72.209 include:spf.protection.outlook.com include:servers.mcsv.net include:_spf.centerasecurity.dk -all

✉️ SPF

Policy	Record (cs.dk)
-all (hard fail)	v=spf1 ip4:62.242.104.198 ip4:62.242.207.114 ip4:62.242.207.115 ip4:52.186.121.110 ip4:40.68.36.243 ip4:89.188.72.209 include:spf.protection.outlook.com include:servers.mcsv.net include:_spf.centerasecurity.dk -all

📨 DMARC

Policy	Record (_dmarc.cs.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:6915a2a19ff98@dmarc-dk.centerasecurity.com;

📬 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

🔗 TLSA / DANE6 records 103ms

Service / Owner	Type	Cert association
SMTP _25._tcp.mx1-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx1-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…
SMTP _25._tcp.mx2-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx3-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	56315B43B892E9AEE184919EC6A5821C…
SMTP _25._tcp.mx3-dk.centerasecurity.dk	DANE-EE · SPKI · SHA-256	D4C349E7B72F5CF4A9CEA358F98947C2…

🔐 DNSSEC122ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080101
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

55ms

A

53ms

MX

60ms

AAAA

48ms

TXT

212ms

CAA

53ms

HTTPS

52ms

TLSA

103ms

SOA

0ms

MTA-STS

102ms

DNSSEC

122ms

SRV

87ms

Total

952ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 14:20:25	952ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-08-05 22:28:17	2644ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-07-25 20:57:52	9262ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-07-17 06:03:08	2272ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-07-03 09:58:10	6942ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-23 22:39:07	1211ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-23 03:55:12	1168ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 23:06:23	842ms	2 NS 1 A 3 MX	🔒 Secure	View