opusb2b.dk DNS records

🖥️ Nameservers2 records 71ms

Nameserver	IP addresses	PTR	ASN / ISP
arvind.ns.cloudflare.com	108.162.195.227 162.159.44.227 172.64.35.227 2606:4700:58::a29f:2ce3 2803:f800:50::6ca2:c3e3 2a06:98c1:50::ac40:23e3	arvind.ns.cloudflare.com arvind.ns.cloudflare.com arvind.ns.cloudflare.com arvind.ns.cloudflare.com arvind.ns.cloudflare.com arvind.ns.cloudflare.com	AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc. AS13335 Cloudflare, Inc.
ollie.ns.cloudflare.com	108.162.194.71 162.159.38.71 172.64.34.71 2606:4700:50::a29f:2647 2803:f800:50::6ca2:c247 2a06:98c1:50::ac40:2247	ollie.ns.cloudflare.com ollie.ns.cloudflare.com ollie.ns.cloudflare.com ollie.ns.cloudflare.com ollie.ns.cloudflare.com ollie.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 54ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	opusb2b-dk.mail.protection.outlook.com	2a01:111:f403:ca04::6 2a01:111:f403:ca04::8 2a01:111:f403:ca04::e 2a01:111:f403:ca09::f 52.101.68.10 52.101.68.39 52.101.68.8 52.101.73.11	mail-db4pr02cu00406.inbound.protection.outlook.com mail-db5pr02cu00100.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am7pr05cu00307.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-am1pr04cu00103.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 114ms

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

📝 TXT Records2 records 224ms

TXT Record
MS=ms57666787
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF

Policy	Record (opusb2b.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)

🔐 DNSSEC198ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA40ms

Field	Value
Serial	2406730032
Primary NS (MNAME)	arvind.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

71ms

A

37ms

MX

54ms

AAAA

62ms

TXT

224ms

CAA

46ms

HTTPS

69ms

TLSA

238ms

SOA

40ms

MTA-STS

89ms

DNSSEC

198ms

SRV

114ms

Total

1861ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 15:54:24	883ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-08-26 02:55:13	1513ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-08-12 04:37:44	2129ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-08-06 04:32:51	2135ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-07-02 10:16:34	1861ms	2 NS 0 A 1 MX	🔓 Insecure	View
2026-06-18 00:24:33	818ms	2 NS 0 A 1 MX	🔓 Insecure	View