tfbn.dk DNS records

🖥️ Nameservers2 records 47ms

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 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.30.211.38	600s	domain-parking.one.com	AS51468	One.com A/S	46.30.208.0/21	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	tfbn-dk.mail.protection.outlook.com	2a01:111:f403:c967::a 2a01:111:f403:ca04::e 2a01:111:f403:ca09::26 2a01:111:f403:ca21::8 52.101.103.36 52.101.73.12 52.101.73.145 52.101.91.159	mail-cpjpr05cu00102.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-miypr05cu00104.inbound.protection.outlook.com mail-am4pr0401cu00104.inbound.protection.outlook.com mail-am6pr02cu00301.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

📧 Autodiscover / Autoconfig

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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 164ms

TXT Record
MS=ms57045606
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (tfbn.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -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

🔗 TLSA / DANE

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

🔐 DNSSEC86ms

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

🏷️ SOA0ms

Field	Value
Serial	2026083101
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 RegistrationWHOIS fetched 2026-09-07 14:32:09

Field	Value
Registrar	ONE.COM A/S
Registered	2026-04-24
Expires	2027-04-23 (225d)

📋 WHOIS

⏱️ Lookup Timing

NS

47ms

A

32ms

MX

49ms

AAAA

34ms

TXT

164ms

CAA

46ms

HTTPS

50ms

TLSA

320ms

SOA

0ms

MTA-STS

49ms

DNSSEC

86ms

SRV

89ms

Total

2845ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-07 14:31:31	2845ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-22 04:36:14	5839ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-06 06:14:03	1793ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-03 10:03:49	1041ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-26 11:23:26	3940ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-26 00:41:01	3315ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-23 14:43:58	1175ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-23 07:20:40	826ms	2 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-19 00:32:15	1027ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 13:52:42	3821ms	2 NS 1 A 1 MX	🔒 Secure	View