oerbaekskilde.dk DNS records

🖥️ Nameservers3 records 104ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.c-system.dk	49.12.60.90	ns1.c-system.dk	AS24940 Hetzner Online GmbH
ns2.c-system.dk	49.12.60.94	ns2.c-system.dk	AS24940 Hetzner Online GmbH
ns3.c-system.dk	37.27.223.112	monitor.itout.dk	AS24940 Hetzner Online GmbH

🌍 A Records1 records 123ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
49.12.60.83	38400s	web01.c-system.dk	AS24940	Hetzner Online GmbH	49.12.0.0/15	🇩🇪 Germany	—

📧 MX Records1 records 161ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	38400s	oerbaekskilde-dk.mail.protection.outlook.com	2a01:111:f403:ca09:: 2a01:111:f403:ca09::2 2a01:111:f403:ca09::7 2a01:111:f403:ca09::9 52.101.68.12 52.101.68.16 52.101.68.39 52.101.73.15	mail-am3pr04cu00500.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am9pr04cu00107.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am9pr04cu00107.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 → 52.98.252.72

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 283ms

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

📝 TXT Records1 records 387ms

TXT Record
v=spf1 a mx ip4:86.58.182.139 ip4:83.94.107.94 ip4:5.186.46.4 ip4:74.234.210.229 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (oerbaekskilde.dk)
-all (hard fail)	v=spf1 a mx ip4:86.58.182.139 ip4:83.94.107.94 ip4:5.186.46.4 ip4:74.234.210.229 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)

🔐 DNSSEC164ms

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

🏷️ SOA95ms

Field	Value
Serial	2018100410
Primary NS (MNAME)	ns1.c-system.dk
Responsible (RNAME)	admin@c-system.dk
Refresh	10800s
Retry	3600s
Expire	1309600s
Minimum (neg-cache TTL)	38400s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

104ms

A

123ms

MX

161ms

AAAA

72ms

TXT

387ms

CAA

65ms

HTTPS

121ms

TLSA

159ms

SOA

95ms

MTA-STS

97ms

DNSSEC

164ms

SRV

283ms

Total

920ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-24 17:02:50	920ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-23 18:55:41	882ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-23 15:45:42	942ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-21 03:24:18	781ms	3 NS 1 A 1 MX	🔓 Insecure	View
2026-06-17 13:10:50	3589ms	3 NS 1 A 1 MX	🔓 Insecure	View