opendoors.dk DNS records

🖥️ Nameservers2 records 46ms

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 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
46.4.18.84	600s	server5.designrus.dk	AS24940	Hetzner Online GmbH	46.4.0.0/16	🇩🇪 Germany	Falkenstein

📧 MX Records1 records 49ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	opendoors-dk.mail.protection.outlook.com	2a01:111:f403:ca04::7 2a01:111:f403:ca04::9 2a01:111:f403:ca09:: 2a01:111:f403:ca48::c 52.101.68.10 52.101.68.15 52.101.68.27 52.101.73.6	mail-db4pr02cu00307.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-miypr03cu00104.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db7pr03cu00503.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 → 40.104.116.24
🔶 Autoconfig	46.4.18.84

🔷 AAAA Records (IPv6)1 records 38ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a01:4f8:221:3960::2	600s	—	AS24940	Hetzner Online GmbH	2a01:4f8:0:0:0:0:0:0/31	🇩🇪 Germany	Falkenstein

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 191ms

TXT Record
MS=ms30422807
v=spf1 mx ip4:212.45.53.35 ip4:185.163.189.20 include:spf.protection.outlook.com include:servers.mcsv.net include:_spf.designrus.dk include:_spf_eucentral1.prod.hydra.sophos.com ~all

✉️ SPF

Policy	Record (opendoors.dk)
~all (soft fail)	v=spf1 mx ip4:212.45.53.35 ip4:185.163.189.20 include:spf.protection.outlook.com include:servers.mcsv.net include:_spf.designrus.dk include:_spf_eucentral1.prod.hydra.sophos.com ~all

📨 DMARC

Policy	Record (_dmarc.opendoors.dk)
p=quarantine	v=DMARC1; p=quarantine; rua=mailto:admin@opendoors.dk;

📬 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)

🔐 DNSSEC88ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080701
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

46ms

A

33ms

MX

49ms

AAAA

38ms

TXT

191ms

CAA

41ms

HTTPS

33ms

TLSA

298ms

SOA

0ms

MTA-STS

53ms

DNSSEC

88ms

SRV

61ms

Total

935ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-25 12:27:10	935ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-08 11:09:25	9340ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-08 19:32:54	8931ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-28 04:16:18	1776ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 23:49:46	770ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 10:35:20	923ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-17 23:14:30	839ms	2 NS 1 A 1 MX	🔒 Secure	View