sydbyg.dk DNS records

🖥️ Nameservers4 records 223ms

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	2620:1ec:8ec:700::d0	ns2-208.azure-dns.net	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 185ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
94.231.106.177	3600s	linux217.curanet.dk	AS48854	team.blue Denmark A/S	94.231.96.0/20	🇩🇰 Denmark	—

📧 MX Records1 records 231ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	sydbyg-dk.mail.protection.outlook.com	2a01:111:f403:ca04::b 2a01:111:f403:ca04::e 2a01:111:f403:ca09::20 2a01:111:f403:ca09::c 52.101.68.25 52.101.68.27 52.101.68.36 52.101.73.12	mail-dbbpr03cu00103.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-as8pr05cu00304.inbound.protection.outlook.com mail-db8pr02cu00101.inbound.protection.outlook.com mail-db7pr03cu00503.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-am4pr0401cu00104.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 249ms

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

📝 TXT Records2 records 456ms

TXT Record
mscid=M+RQ95gONP3iae8wojv+gS9EdJcPu7Z+uFvhSmoAIVQvn9h6x+zsFLDYOeX7trNcqJyHiFN9yv9lUBwgK3zJGw==
v=spf1 ip4:94.231.106.177 include:spf.protection.outlook.com include:spf.curanet.dk -all

✉️ SPF

Policy	Record (sydbyg.dk)
-all (hard fail)	v=spf1 ip4:94.231.106.177 include:spf.protection.outlook.com include:spf.curanet.dk -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)

🔐 DNSSEC298ms

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

🏷️ SOA215ms

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

223ms

A

185ms

MX

231ms

AAAA

233ms

TXT

456ms

CAA

222ms

HTTPS

224ms

TLSA

865ms

SOA

215ms

MTA-STS

262ms

DNSSEC

298ms

SRV

249ms

Total

2313ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-06-28 03:11:58	2313ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-21 09:39:31	1114ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-21 02:57:04	878ms	4 NS 1 A 1 MX	🔓 Insecure	View
2026-06-17 13:39:55	2186ms	4 NS 1 A 1 MX	🔓 Insecure	View