b2bnet.dk

📜 Historical scan 2026-06-24 22:55:23 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

b2bnet.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 16 January 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.42.25 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by b2bnet-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from this scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 261ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 241ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.42.25	3600s	prolinux101.curanet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 261ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	b2bnet-dk.mail.protection.outlook.com	2a01:111:f403:ca04::2 2a01:111:f403:ca09::2 2a01:111:f403:ca09::6 2a01:111:f403:ca09::9 52.101.68.36 52.101.68.39 52.101.68.5 52.101.73.12	mail-du2pr03cu00102.inbound.protection.outlook.com mail-am0pr83cu00402.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-db5pr02cu00104.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-du2pr03cu00105.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 → 40.104.116.40

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 383ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	0	5061	sipfed.online.lync.com.b2bnet.dk

📝 TXT Records#

2 records 1041ms

TXT Record
MS=ms19863943
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (b2bnet.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

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-07 16:38:25

www	185.21.42.25 (AS48854) (address records, no CNAME)
www vs bare domain	Same network b2bnet.dk: 185.21.42.25 (AS48854) www.b2bnet.dk: 185.21.42.25 (AS48854)
Wildcard	No
Denial of existence	NSEC3 · 1 iteration · 1-byte salt RFC 9276 recommends 0 iterations and no salt
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

🔎 SPF check#

zone-wide SPF report

DNS lookups: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

325ms

Check	Result
Validation Status	🔒 Secure
AD Flag (resolver validates)	✓ Set
DS Record	✓ Found
DNSKEY Record	✓ Found
Flags	fully validated

🏷️ SOA#

384ms

Field	Value
Serial	2024061901
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-09 04:46:18

Field	Value
Registrar	CURANET A/S
Registered	2015-01-16
Expires	2027-01-31 (106d)

📋 WHOIS#

⏱️ Lookup Timing#

261ms

241ms

261ms

AAAA

253ms

TXT

1041ms

CAA

237ms

HTTPS

258ms

TLSA

267ms

SOA

384ms

MTA-STS

267ms

DNSSEC

325ms

SRV

383ms

Total

2661ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 16:38:25	762ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 16:14:52	1052ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 22:55:23 shown	2661ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 13:57:31	2962ms	2 NS 1 A 1 MX	🔒 Secure