cerno.dk DNS records

🖥️ Nameservers2 records 33ms

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 34ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
52.50.76.232	3600s	ec2-52-50-76-232.eu-west-1.compute.amazonaws.com	AS16509	Amazon.com, Inc.	52.48.0.0/14	🇮🇪 Ireland	Dublin

📧 MX Records1 records 43ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	cerno-dk.mail.protection.outlook.com	2a01:111:f403:ca04::8 2a01:111:f403:ca04::f 2a01:111:f403:ca09::6 2a01:111:f403:ca38::8 52.101.68.10 52.101.73.1 52.101.73.28 52.101.73.30	mail-db5pr02cu00100.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-am3pr04cu00501.inbound.protection.outlook.com mail-am7pr05cu00204.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 → 40.104.116.24
🔶 Autoconfig	52.50.76.232

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 58ms

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

📝 TXT Records2 records 148ms

TXT Record
MS=ms94176871
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (cerno.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)

🔐 DNSSEC82ms

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

🏷️ SOA0ms

Field	Value
Serial	2021111801
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

33ms

A

34ms

MX

43ms

AAAA

48ms

TXT

148ms

CAA

37ms

HTTPS

44ms

TLSA

241ms

SOA

0ms

MTA-STS

49ms

DNSSEC

82ms

SRV

58ms

Total

770ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 20:25:11	770ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-26 12:07:16	913ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-01 16:20:53	848ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 17:11:02	4128ms	2 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-24 12:27:09	1177ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 20:10:41	627ms	2 NS 1 A 1 MX	🔒 Secure	View