preftf.dk DNS records

🖥️ Nameservers2 records 23ms

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 28ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.8.37.10	600s	—	AS3308	Norlys Digital A/S	193.8.36.0/23	🇩🇰 Denmark	Ølstykke

📧 MX Records1 records 28ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	preftf-dk.mail.eo.outlook.com	2a01:111:f403:ca04::d 2a01:111:f403:ca09::a 2a01:111:f403:ca21::8 2a01:111:f403:ca38::a 52.101.181.153 52.101.181.156 52.101.68.12 52.101.73.1	mail-db6pr03cu00105.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-matpr04cu00100.inbound.protection.outlook.com mail-wa4pr05cu00102.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-wa4pr05cu00104.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am3pr04cu00501.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 → 40.104.116.8
🔶 Autoconfig	193.8.37.10

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 92ms

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

📝 TXT Records1 records 130ms

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

✉️ SPF

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

📨 DMARC

Policy	Record (_dmarc.preftf.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:dmarc_agg@vali.email

📬 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)

🔐 DNSSEC96ms

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

🏷️ SOA0ms

Field	Value
Serial	2026090301
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

23ms

A

28ms

MX

28ms

AAAA

26ms

TXT

130ms

CAA

30ms

HTTPS

19ms

TLSA

15259ms

SOA

0ms

MTA-STS

43ms

DNSSEC

96ms

SRV

92ms

Total

15732ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-03 20:27:23	15732ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-10 22:18:39	5059ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-02 02:58:29	2636ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-02 00:59:12	4893ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-29 02:05:01	1844ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 14:39:27	4532ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 02:00:14	1203ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 22:25:31	6202ms	2 NS 1 A 1 MX	🔒 Secure	View