b2bnet.dk

Records from scan: 2026-10-07 16:38:25 · 762ms total · last checked 2026-10-16 01:30 (unchanged)

⬇ 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 our latest scan: nameservers, A/AAAA, MX, TXT, SPF, DMARC, CAA, TLSA/DANE, MTA-STS, SRV and more.

🖥️ Nameservers#

2 records 32ms

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 32ms

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 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	b2bnet-dk.mail.protection.outlook.com	2a01:111:f403:c967::a 2a01:111:f403:ca09::20 2a01:111:f403:ca38::8 2a01:111:f403:ca38::a 52.101.103.162 52.101.73.153 52.101.91.159 52.101.91.162	mail-cpjpr05cu00102.inbound.protection.outlook.com mail-as8pr05cu00400.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-wa4pr05cu00102.inbound.protection.outlook.com mail-miypr03cu00202.inbound.protection.outlook.com mail-as8pr05cu00401.inbound.protection.outlook.com mail-matpr04cu00207.inbound.protection.outlook.com mail-matpr04cu00302.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 → 52.98.154.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 73ms

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

📝 TXT Records#

2 records 150ms

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#

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#

85ms

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

🏷️ SOA#

28ms

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#

32ms

47ms

AAAA

58ms

TXT

150ms

CAA

73ms

HTTPS

81ms

TLSA

316ms

SOA

28ms

MTA-STS

67ms

DNSSEC

85ms

SRV

73ms

Total

762ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-07 16:38:25 shown	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	2661ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 13:57:31	2962ms	2 NS 1 A 1 MX	🔒 Secure