dseu.dk DNS records

🖥️ Nameservers2 records 58ms

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 45ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
213.173.226.237	43200s	—	AS3308	Norlys Telco A/S	213.173.224.0/19	🇩🇰 Denmark	Valby

📧 MX Records1 records 51ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	dseu-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca09::1 2a01:111:f403:ca09::26 2a01:111:f403:ca09::9 52.101.68.27 52.101.73.126 52.101.73.2 52.101.73.6	mail-db5pr02cu00100.inbound.protection.outlook.com mail-as9pr07cu00301.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-am8pr83cu00106.inbound.protection.outlook.com mail-as9pr07cu00302.inbound.protection.outlook.com mail-am6pr04cu00306.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 → 40.104.116.56
🔶 Autoconfig	dseu.dk → 213.173.226.237

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 84ms

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

📝 TXT Records3 records 180ms

TXT Record
18.03.2026
MS=ms74595211
v=spf1 mx a ip4:91.238.212.109 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (dseu.dk)
-all (hard fail)	v=spf1 mx a ip4:91.238.212.109 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

🔏 ACME Challenge

Type	Name	Value
CNAME	_acme-challenge.dseu.dk	dseu.dk

🔗 TLSA / DANE

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

🔐 DNSSEC94ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080901
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

58ms

A

45ms

MX

51ms

AAAA

44ms

TXT

180ms

CAA

57ms

HTTPS

53ms

TLSA

745ms

SOA

0ms

MTA-STS

66ms

DNSSEC

94ms

SRV

84ms

Total

1382ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 01:02:22	1382ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-10 07:49:35	2416ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-18 04:05:57	4437ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-11 06:31:07	17088ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-02 00:08:23	773ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 04:51:03	1559ms	2 NS 1 A 1 MX	🔒 Secure	View