tfe.dk DNS records

🖥️ Nameservers2 records 37ms

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 44ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
3.126.204.255	3600s	ec2-3-126-204-255.eu-central-1.compute.amazonaws.com	AS16509	Amazon.com, Inc.	3.96.0.0/11	🇩🇪 Germany	Frankfurt am Main

📧 MX Records1 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	tfe-dk.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca04::c 2a01:111:f403:ca09:: 2a01:111:f403:ca09::7 52.101.68.5 52.101.73.145 52.101.73.15 52.101.73.2	mail-db4pr02cu00406.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-am6pr02cu00301.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as9pr07cu00302.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

🔌 SRV Records1 records 74ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records3 records 179ms

TXT Record
apple-domain-verification=EHo9jJZCcoRjlO2I
P-QBVttku7pX
v=spf1 include:spf.protection.outlook.com include:spf.permido.com -all

✉️ SPF

Policy	Record (tfe.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.permido.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	2026082602
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

37ms

A

44ms

MX

47ms

AAAA

61ms

TXT

179ms

CAA

45ms

HTTPS

44ms

TLSA

374ms

SOA

0ms

MTA-STS

59ms

DNSSEC

86ms

SRV

74ms

Total

1095ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 20:16:20	1095ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 12:25:08	1277ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-02 15:06:58	9989ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-26 23:44:21	1092ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-21 16:33:38	1572ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 17:41:45	1800ms	2 NS 1 A 1 MX	🔒 Secure	View