cn20.dk DNS records

🖥️ Nameservers3 records 73ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.nerdonline.dk	167.233.0.169	mailgw1.nerdonline.dk	AS24940 Hetzner Online GmbH
ns2.nerdonline.dk	95.216.155.89	hel01.nerdonline.dk	AS24940 Hetzner Online GmbH
ns3.nerdonline.dk	167.233.0.167	ns3.nerdonline.dk	AS24940 Hetzner Online GmbH

🌍 A Records

🌍

No A records found

📧 MX Records1 records 70ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	38400s	cn20-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::5 2a01:111:f403:ca04::7 2a01:111:f403:ca09::24 52.101.103.137 52.101.68.29 52.101.73.123 52.101.73.30	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db3pr0202cu00205.inbound.protection.outlook.com mail-db4pr02cu00307.inbound.protection.outlook.com mail-am6pr02cu00204.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-am6pr02cu00203.inbound.protection.outlook.com mail-am7pr05cu00306.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

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records2 records 335ms

TXT Record
MS=ms40118604
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (cn20.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)

🔐 DNSSEC117ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA0ms

Field	Value
Serial	1582296904
Primary NS (MNAME)	ns.nerdonline.dk
Responsible (RNAME)	hostmaster@nerdonline.dk
Refresh	10800s
Retry	3600s
Expire	604800s
Minimum (neg-cache TTL)	38400s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

73ms

A

58ms

MX

70ms

AAAA

62ms

TXT

335ms

CAA

66ms

HTTPS

55ms

TLSA

177ms

SOA

0ms

MTA-STS

112ms

DNSSEC

117ms

SRV

100ms

Total

1494ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-02 00:38:56	1494ms	3 NS 0 A 1 MX	🔓 Insecure	View
2026-08-12 08:40:07	7262ms	3 NS 0 A 1 MX	🔓 Insecure	View
2026-07-20 03:24:03	13640ms	3 NS 0 A 0 MX	🔓 Insecure	View
2026-06-21 14:13:55	734ms	3 NS 0 A 1 MX	🔓 Insecure	View
2026-06-16 21:49:12	1660ms	3 NS 0 A 1 MX	🔓 Insecure	View
2026-06-16 21:30:03	871ms	3 NS 0 A 1 MX	🔓 Insecure	View