rfe.dk DNS records

🖥️ Nameservers2 records 112ms

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 184ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.42.65	3600s	vm1379.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records1 records 53ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	rfe-dk.mail.protection.outlook.com	2a01:111:f403:ca04::5 2a01:111:f403:ca04::c 2a01:111:f403:ca04::e 2a01:111:f403:ca09::c 52.101.181.153 52.101.68.18 52.101.68.3 52.101.68.39	mail-db3pr0202cu00205.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-db7pr03cu00607.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 → 40.104.116.40
🔶 Autoconfig	185.21.42.65

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 231ms

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

📝 TXT Records3 records 424ms

TXT Record
apple-domain-verification=wmDA8PYIIwfDs6zB
uvmid=473301
v=spf1 include:spf.protection.outlook.com include:skoleintra.dk include:spf.mailjet.com ip4:80.210.94.205/32 -all

✉️ SPF

Policy	Record (rfe.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:skoleintra.dk include:spf.mailjet.com ip4:80.210.94.205/32 -all

📨 DMARC

Policy	Record (_dmarc.rfe.dk)
p=quarantine	v=DMARC1; p=quarantine; pct=100;

📬 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)

🔐 DNSSEC331ms

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

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

112ms

A

184ms

MX

53ms

AAAA

65ms

TXT

424ms

CAA

199ms

HTTPS

117ms

TLSA

803ms

SOA

0ms

MTA-STS

206ms

DNSSEC

331ms

SRV

231ms

Total

2534ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-31 17:39:29	2534ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-27 18:02:46	1086ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-25 01:53:33	1523ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 22:33:26	1096ms	2 NS 1 A 1 MX	🔒 Secure	View