letslearn.dk DNS records

🖥️ Nameservers2 records 60ms

Nameserver	IP addresses	PTR	ASN / ISP
ns25.domaincontrol.com	2603:5:2161::d 97.74.102.13	ns25.domaincontrol.com ns25.domaincontrol.com	AS44273 Host Europe GmbH AS44273 Host Europe GmbH
ns26.domaincontrol.com	173.201.70.13 2603:5:2261::d	ns26.domaincontrol.com ns26.domaincontrol.com	AS44273 Host Europe GmbH AS44273 Host Europe GmbH

🌍 A Records1 records 61ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.191.156.121	1800s	linux240.unoeuro.com	AS48854	team.blue Denmark A/S	93.191.152.0/21	🇩🇰 Denmark	—

📧 MX Records1 records 59ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	letslearn-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca09::3 2a01:111:f403:ca09::5 2a01:111:f403:ca09::9 52.101.68.10 52.101.68.32 52.101.68.36 52.101.68.39	mail-du2pr03cu00102.inbound.protection.outlook.com mail-am6pr04cu00303.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-db7pr03cu00607.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 → 52.97.137.88

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records1 records 85ms

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

📝 TXT Records1 records 251ms

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

✉️ SPF

Policy	Record (letslearn.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)

🔐 DNSSEC73ms

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

🏷️ SOA60ms

Field	Value
Serial	2020032301
Primary NS (MNAME)	ns25.domaincontrol.com
Responsible (RNAME)	dns@jomax.net
Refresh	28800s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	600s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

60ms

A

61ms

MX

59ms

AAAA

58ms

TXT

251ms

CAA

61ms

HTTPS

48ms

TLSA

644ms

SOA

60ms

MTA-STS

75ms

DNSSEC

73ms

SRV

85ms

Total

1340ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-30 10:28:16	966ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-29 08:15:54	1523ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-27 08:27:46	891ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-23 22:26:56	742ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-22 16:20:29	1340ms	2 NS 1 A 1 MX	🔓 Insecure	View
2026-06-18 07:15:51	1028ms	2 NS 1 A 1 MX	🔓 Insecure	View