optimisten.dk DNS records

🖥️ Nameservers2 records 93ms

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 125ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
77.111.240.189	3600s	webcluster62.webpod11-cph3.one.com	AS51468	One.com A/S	77.111.240.0/22	🇩🇰 Denmark	Copenhagen

📧 MX Records1 records 74ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	optimisten-dk.mail.protection.outlook.com	2a01:111:f403:ca04:: 2a01:111:f403:ca04::2 2a01:111:f403:ca09::28 2a01:111:f403:ca48::a 52.101.68.16 52.101.68.21 52.101.73.16 52.101.73.6	mail-db3pr0202cu00100.inbound.protection.outlook.com mail-du2pr03cu00102.inbound.protection.outlook.com mail-am6pr02cu00300.inbound.protection.outlook.com mail-miypr02cu00202.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-as2pr05cu00100.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

🔷 AAAA Records (IPv6)1 records 102ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
2a02:2350:5:102:80e9:301:ec77:4981	3600s	—	AS51468	One.com A/S	2a02:2350:0:0:0:0:0:0/32	🇩🇰 Denmark	Copenhagen

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records1 records 270ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:_custspf.one.com include:emsd1.com ~all

✉️ SPF

Policy	Record (optimisten.dk)
~all (soft fail)	v=spf1 include:spf.protection.outlook.com include:_custspf.one.com include:emsd1.com ~all

📨 DMARC

Policy	Record (_dmarc.optimisten.dk)
p=reject	v=DMARC1;p=reject;rua=mailto:easy664016@easydmarc.com;ruf=mailto:ruf@rep.easydmarc.com;fo=1

📬 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)

🔐 DNSSEC210ms

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

🏷️ SOA0ms

Field	Value
Serial	2026082901
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

93ms

A

125ms

MX

74ms

AAAA

102ms

TXT

270ms

CAA

73ms

HTTPS

89ms

TLSA

775ms

SOA

0ms

MTA-STS

104ms

DNSSEC

210ms

SRV

176ms

Total

1743ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-29 06:25:18	1743ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-27 19:21:06	870ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-24 03:53:13	14962ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-09 23:21:38	1420ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-08-08 19:36:46	1815ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-23 17:06:13	1539ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-18 15:06:13	3370ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-17 20:29:28	846ms	2 NS 1 A 1 MX	🔓 Insecure	View