sfblab.dk DNS records

🖥️ Nameservers4 records 47ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1-36.azure-dns.com	150.171.10.36 2603:1061:0:10::24	ns1-36.azure-dns.com ns1-36.azure-dns.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns2-36.azure-dns.net	150.171.16.36 2620:1ec:8ec:10::24	ns2-36.azure-dns.net ns2-36.azure-dns.net	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns3-36.azure-dns.org	13.107.222.36 2a01:111:4000:10::24	ns3-36.azure-dns.org ns3-36.azure-dns.org	AS8075 Microsoft Corporation AS8075 Microsoft Corporation
ns4-36.azure-dns.info	13.107.206.36 2620:1ec:bda:10::24	ns4-36.azure-dns.info ns4-36.azure-dns.info	AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🌍 A Records

🌍

No A records found

📧 MX Records1 records 44ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	mail.sfblab.dk	20.106.77.102	—	AS8075 Microsoft Corporation

📧 Autodiscover / Autoconfig

Service	CNAME / IP
🔷 Autodiscover	mail.sfblab.dk → 20.106.77.102

🔷 AAAA Records (IPv6)

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records2 records 71ms

Service	Priority	Weight	Port	Target
_autodiscover._tcp	10	0	10	mail.sfblab.dk
_sipfederationtls._tcp	1	0	5061	sip.sfblab.dk

📝 TXT Records4 records 192ms

TXT Record
fNLcmD95t2iTLH+oa4qfguiNKDCw5SSJgMEMKIAYnhE782oSY14KwGhURQafidK9FHeLlDXObX4Rsq/zgm10hw==
MS=ms90093042
sln0cw3q38wv7fqtvwm93gvljf4z4pt9
v=spf1 mx ip4:20.106.96.125 ip4:20.106.77.102 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (sfblab.dk)
-all (hard fail)	v=spf1 mx ip4:20.106.96.125 ip4:20.106.77.102 include:spf.protection.outlook.com -all

📨 DMARC

Policy	Record (_dmarc.sfblab.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:rua@dmarc.microsoft; ruf=mailto:ruf@dmarc.microsoft; fo=1

📬 MTA-STS

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records1 records 52ms

Flags	Tag	Value
0	contactemail	caarecordaware@microsoft.com

🔗 TLSA / DANE

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

🔐 DNSSEC79ms

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)	ns1-36.azure-dns.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

47ms

A

39ms

MX

44ms

AAAA

49ms

TXT

192ms

CAA

52ms

HTTPS

33ms

TLSA

55ms

SOA

0ms

MTA-STS

62ms

DNSSEC

79ms

SRV

71ms

Total

586ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-27 20:25:34	586ms	4 NS 0 A 1 MX	🔓 Insecure	View
2026-06-24 00:40:50	733ms	4 NS 0 A 1 MX	🔓 Insecure	View
2026-06-21 03:57:11	1085ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-18 03:54:36	3690ms	4 NS 0 A 1 MX	🔓 Insecure	View