cku.dk DNS records

🖥️ Nameservers4 records 49ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S
ns4.simply.com	91.197.248.80	ns4.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records1 records 51ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.20.205.59	3600s	linux383.unoeuro.com	AS48854	team.blue Denmark A/S	185.20.204.0/22	🇩🇰 Denmark	—

📧 MX Records1 records 43ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	cku-dk.mail.protection.outlook.com	2a01:111:f403:ca04::5 2a01:111:f403:ca04::e 2a01:111:f403:ca09::3 2a01:111:f403:ca09::4 52.101.68.10 52.101.68.12 52.101.68.27 52.101.73.19	mail-db3pr0202cu00205.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am0pr04cu00504.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-as8pr04cu00803.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	185.20.205.59

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 98ms

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

📝 TXT Records1 records 155ms

TXT Record
v=spf1 include:spf.protection.outlook.com include:spf.simply.com include:servers.mcsv.net include:sendgrid.net include:mailgun.org -all

✉️ SPF

Policy	Record (cku.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com include:spf.simply.com include:servers.mcsv.net include:sendgrid.net include:mailgun.org -all

📨 DMARC

Policy	Record (_dmarc.cku.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:dmarc@robot.simply.com; ruf=mailto:dmarc@robot.simply.com;

📬 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)

🔐 DNSSEC110ms

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

🏷️ SOA47ms

Field	Value
Serial	2025042300
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

49ms

A

51ms

MX

43ms

AAAA

44ms

TXT

155ms

CAA

68ms

HTTPS

65ms

TLSA

116ms

SOA

47ms

MTA-STS

88ms

DNSSEC

110ms

SRV

98ms

Total

768ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-07-02 11:08:37	768ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-20 00:29:26	1583ms	4 NS 1 A 1 MX	🔒 Secure	View
2026-06-16 21:05:15	743ms	4 NS 1 A 1 MX	🔒 Secure	View