sysmaster.dk DNS records

🖥️ Nameservers4 records 187ms

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 Records1 records 157ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
93.90.1.187	3600s	93-90-1-187.cpe.dsa-net.dk	AS31027	GlobalConnect A/S	93.90.0.0/20	🇩🇰 Denmark	Odense

📧 MX Records1 records 184ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	sysmaster-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca04::6 2a01:111:f403:ca04::c 2a01:111:f403:ca09::6 52.101.68.3 52.101.73.11 52.101.73.19 52.101.73.22	mail-du2pr03cu00102.inbound.protection.outlook.com mail-db4pr02cu00406.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-am1pr04cu00103.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-am7pr05cu00106.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 205ms

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

📝 TXT Records2 records 379ms

TXT Record
mscid=eF7ooMYUBxfgWeXzlakakT1qtN1m6BgD+Zt1uBy9w8ZZMaksU+tcZDEkp7ZI8GI7FKUmh38tHuFGGF6d0nuzUw==
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (sysmaster.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)

🔐 DNSSEC272ms

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

🏷️ 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

187ms

A

157ms

MX

184ms

AAAA

141ms

TXT

379ms

CAA

159ms

HTTPS

197ms

TLSA

760ms

SOA

0ms

MTA-STS

200ms

DNSSEC

272ms

SRV

205ms

Total

2780ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-07-06 16:14:13	2780ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-19 22:02:00	2577ms	4 NS 1 A 1 MX	⚠️ Bogus	View
2026-06-17 13:27:19	947ms	4 NS 1 A 1 MX	🔓 Insecure	View