fbr.dk DNS records

🖥️ Nameservers2 records 52ms

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 29ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
109.238.54.175	43200s	—	AS47292	Sentia Denmark A/S	109.238.48.0/21	🇩🇰 Denmark	—

📧 MX Records3 records 34ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	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	3600s	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	3600s	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 → 40.104.116.8

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records6 records 187ms

TXT Record
apple-domain-verification=IYhsHUd1qKUEZ5vt
d365mktkey=Uf9PW7pduVGPY47VxSJpf2mHDjtUXAdPFRnv62V6IiMx
Danish Consumer Council
google-site-verification=oMyyuU1ELK-XY2KuRiq0syx742bmWyEc_DVbNZO1egk
MS=ms68495003
v=spf1 ip4:86.48.66.42 ip4:109.238.54.175 ip4:109.238.54.52 ip4:91.102.88.131 ip4:167.89.108.1 ip4:167.89.108.13 ip4:167.89.92.35 include:spf.protection.outlook.com include:_spf.centerasecurity.dk mx -all

✉️ SPF

Policy	Record (fbr.dk)
-all (hard fail)	v=spf1 ip4:86.48.66.42 ip4:109.238.54.175 ip4:109.238.54.52 ip4:91.102.88.131 ip4:167.89.108.1 ip4:167.89.108.13 ip4:167.89.92.35 include:spf.protection.outlook.com include:_spf.centerasecurity.dk mx -all

📨 DMARC

Policy	Record (_dmarc.fbr.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:655c9c451da1a@dmarc.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 75ms

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

🔐 DNSSEC84ms

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

🏷️ SOA0ms

Field	Value
Serial	2026090101
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

52ms

A

29ms

MX

34ms

AAAA

43ms

TXT

187ms

CAA

39ms

HTTPS

50ms

TLSA

75ms

SOA

0ms

MTA-STS

83ms

DNSSEC

84ms

SRV

77ms

Total

2760ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 19:59:29	2760ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-09-01 19:20:54	1497ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-07-29 10:09:16	1256ms	2 NS 1 A 3 MX	🔒 Secure	View
2026-06-17 09:32:55	3180ms	2 NS 1 A 3 MX	🔒 Secure	View