linearsystems.dk DNS records

🖥️ Nameservers4 records 43ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.bdm.microsoftonline.com	13.107.236.208 2603:1061:0:700::d0	ns1-208.azure-dns.com ns1-208.azure-dns.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns2.bdm.microsoftonline.com	150.171.21.208 2620:1ec:8ec:700::d0	ns2-208.azure-dns.net ns2-208.azure-dns.net	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns3.bdm.microsoftonline.com	204.14.183.208 2a01:111:4000:700::d0	ns3-208.azure-dns.org ns3-208.azure-dns.org	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns4.bdm.microsoftonline.com	208.84.5.208 2620:1ec:bda:700::d0	ns4-208.azure-dns.info ns4-208.azure-dns.info	AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🌍 A Records

🌍

No A records found

📧 MX Records1 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	linearsystems-dk.mail.protection.outlook.com	2a01:111:f403:ca09::24 2a01:111:f403:ca09::9 2a01:111:f403:ca09::a 2a01:111:f403:ca09::c 52.101.68.18 52.101.68.29 52.101.73.30 52.101.73.6	mail-am6pr02cu00204.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db4pr02cu00302.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-am7pr05cu00306.inbound.protection.outlook.com mail-am6pr04cu00306.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	maildiscover.unoeuro.com → 94.231.108.222

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records2 records 73ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	10	443	maildiscover.unoeuro.com
_sipfederationtls._tcp	100	1	5061	sipfed.online.lync.com

📝 TXT Records3 records 185ms

TXT Record
MS=ms78456203
mscid=LJWKOf7HOy/50ZEcultAp8yBhYwLrB3jqB2Fp1g/3iMuRcmzDKWbYaGxNlZ8YyJnpNvNhO2z+i2tpSwxXDIaeg==
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (linearsystems.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.linearsystems.dk)
p=quarantine	v=DMARC1; p=quarantine;

📬 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)

🔐 DNSSEC93ms

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	1
Primary NS (MNAME)	ns1.bdm.microsoftonline.com
Responsible (RNAME)	azuredns-hostmaster@microsoft.com
Refresh	3600s
Retry	300s
Expire	2419200s
Minimum (neg-cache TTL)	300s

📋 Registration

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

43ms

A

39ms

MX

38ms

AAAA

43ms

TXT

185ms

CAA

43ms

HTTPS

51ms

TLSA

360ms

SOA

0ms

MTA-STS

61ms

DNSSEC

93ms

SRV

73ms

Total

960ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-09-01 09:14:57	960ms	4 NS 0 A 1 MX	🔓 Insecure	View
2026-06-30 21:17:27	1057ms	4 NS 0 A 1 MX	🔓 Insecure	View
2026-06-27 23:13:57	929ms	4 NS 0 A 1 MX	🔓 Insecure	View
2026-06-23 09:59:35	1070ms	4 NS 0 A 1 MX	🔓 Insecure	View
2026-06-18 08:11:06	1075ms	4 NS 0 A 1 MX	🔓 Insecure	View