o-n.dk DNS records

🖥️ Nameservers2 records 32ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.vtaserver.dk	80.208.30.21	—	AS44869 FIBIA P/S
ns2.vtaserver.dk	80.208.30.30	—	AS44869 FIBIA P/S

🌍 A Records1 records 32ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
80.208.30.22	86400s	—	AS44869	FIBIA P/S	80.208.0.0/17	🇩🇰 Denmark	Ringsted

📧 MX Records1 records 35ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	86400s	on-dk0c.mail.protection.outlook.com	2a01:111:f403:ca04::5 2a01:111:f403:ca04::9 2a01:111:f403:ca09::7 2a01:111:f403:ca09::e 52.101.68.25 52.101.68.5 52.101.73.19 52.101.73.4	mail-db3pr0202cu00205.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-am0pr83cu00404.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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 511ms

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

📝 TXT Records2 records 445ms

TXT Record
MS=ms63995605
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (o-n.dk)
-all (hard fail)	v=spf1 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

🔗 TLSA / DANE

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

🔐 DNSSEC9068ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA25ms

Field	Value
Serial	2022112302
Primary NS (MNAME)	ns1.vtaserver.dk
Responsible (RNAME)	srn@vta.dk
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	10800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

32ms

A

32ms

MX

35ms

AAAA

32ms

TXT

445ms

CAA

32ms

HTTPS

35ms

TLSA

321ms

SOA

25ms

MTA-STS

76ms

DNSSEC

9068ms

SRV

511ms

Total

21600ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-07-27 01:18:14	21600ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-26 00:00:18	6806ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-19 18:05:04	1333ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-07-18 12:25:11	65535ms	2 NS 0 A 0 MX	❓ Unknown	View
2026-06-24 06:38:37	1079ms	2 NS 1 A 1 MX	❓ Unknown	View
2026-06-17 13:08:55	3317ms	2 NS 1 A 1 MX	🔓 Insecure	View