oxygen.dk DNS records

🖥️ Nameservers2 records 42ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records1 records 52ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
20.105.216.31	3600s	—	AS8075	Microsoft Corporation	20.64.0.0/10	🇳🇱 The Netherlands	Amsterdam

📧 MX Records1 records 44ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	oxygen-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca09:: 2a01:111:f403:ca09::6 2a01:111:f403:ca09::8 52.101.181.153 52.101.68.18 52.101.73.24 52.101.73.4	mail-dbapr03cu00100.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as2pr05cu00100.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-as8pr05cu00300.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 → 40.104.116.8
🔶 Autoconfig	185.21.41.117

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 69ms

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

📝 TXT Records5 records 156ms

TXT Record
1password-site-verification=FR4EPTUI7RHJ3NMCGN7RO5532Y
google-site-verification=cV0LVVUnT_ky72DG05-RyqhOlOTPm6hYempNA0eimA0
MS=ms11535171
v=spf1 ip4:94.231.106.100 ip4:93.160.59.162 ip4:94.231.109.40 ip4:94.231.109.69 ip4:93.160.59.162 ip4:94.231.108.223 ip4:93.167.245.22 include:spf.protection.outlook.com include:spf.mandrillapp.com include:spf.curanet.dk -all
WB=BBy56YqHM0eYqQdd1tO5CQ

✉️ SPF

Policy	Record (oxygen.dk)
-all (hard fail)	v=spf1 ip4:94.231.106.100 ip4:93.160.59.162 ip4:94.231.109.40 ip4:94.231.109.69 ip4:93.160.59.162 ip4:94.231.108.223 ip4:93.167.245.22 include:spf.protection.outlook.com include:spf.mandrillapp.com include:spf.curanet.dk -all

📨 DMARC

Policy	Record (_dmarc.oxygen.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:mp@oxygen.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)

🔐 DNSSEC85ms

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

🏷️ SOA0ms

Field	Value
Serial	2026080602
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

42ms

A

52ms

MX

44ms

AAAA

60ms

TXT

156ms

CAA

63ms

HTTPS

47ms

TLSA

590ms

SOA

0ms

MTA-STS

67ms

DNSSEC

85ms

SRV

69ms

Total

1267ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 15:07:57	1267ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 23:35:46	1002ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-09 23:58:49	1472ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-17 15:17:15	827ms	2 NS 1 A 1 MX	🔒 Secure	View