1stlearning.dk DNS records

🖥️ Nameservers2 records 63ms

Nameserver	IP addresses	PTR	ASN / ISP
blair.ns.cloudflare.com	108.162.194.121 162.159.38.121 172.64.34.121 2606:4700:50::a29f:2679 2803:f800:50::6ca2:c279 2a06:98c1:50::ac40:2279	blair.ns.cloudflare.com blair.ns.cloudflare.com blair.ns.cloudflare.com blair.ns.cloudflare.com blair.ns.cloudflare.com blair.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
frank.ns.cloudflare.com	108.162.193.166 172.64.33.166 173.245.59.166 2606:4700:58::adf5:3ba6 2803:f800:50::6ca2:c1a6 2a06:98c1:50::ac40:21a6	frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com frank.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.

🌍 A Records

🌍

No A records found

📧 MX Records1 records 114ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	300s	1stlearning-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::b 2a01:111:f403:ca04::e 2a01:111:f403:ca38::8 52.101.209.153 52.101.68.12 52.101.73.22 52.101.73.28	mail-du2pr03cu00102.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-am7pr05cu00204.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

🔌 SRV Records1 records 197ms

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

📝 TXT Records2 records 446ms

TXT Record
MS=ms27473599
v=spf1 a include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (1stlearning.dk)
-all (hard fail)	v=spf1 a 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

🔏 ACME Challenge

Type	Name	Value
TXT	_acme-challenge.1stlearning.dk	_3fq7ScjLv5nxBkHioqvIy4jbLaSC0Sh5uY9jSo1SG8
TXT	_acme-challenge.1stlearning.dk	TlmbDvuKqu0Lu2Qs5XFi9LBlKHETbck6x8HaFG6R7Es

🔗 TLSA / DANE

✗ No TLSA records — DANE not configured for HTTPS (_443) or MX (_25)

🔐 DNSSEC354ms

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	2413480662
Primary NS (MNAME)	blair.ns.cloudflare.com
Responsible (RNAME)	dns@cloudflare.com
Refresh	10000s
Retry	2400s
Expire	604800s
Minimum (neg-cache TTL)	1800s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

63ms

A

113ms

MX

114ms

AAAA

90ms

TXT

446ms

CAA

122ms

HTTPS

96ms

TLSA

946ms

SOA

0ms

MTA-STS

207ms

DNSSEC

354ms

SRV

197ms

Total

2966ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-30 16:55:35	2966ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-08-06 11:45:50	1681ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-07-17 20:26:24	9202ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-07-01 23:24:11	934ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-06-16 13:08:10	3826ms	2 NS 0 A 1 MX	🔓 Insecure	View