byfiin.dk

📜 Historical scan 2026-06-25 01:12:30 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

byfiin.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was registered on 20 August 2024 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.40.87 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by byfiin-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 253ms

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 249ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.87	3600s	vm1447.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 240ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	byfiin-dk.mail.protection.outlook.com	2a01:111:f403:ca04::1 2a01:111:f403:ca04::4 2a01:111:f403:ca04::d 2a01:111:f403:ca04::f 52.101.68.3 52.101.68.8 52.101.73.19 52.101.73.22	mail-db7pr03cu00401.inbound.protection.outlook.com mail-db4pr02cu00204.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com mail-as8pr04cu00803.inbound.protection.outlook.com mail-am7pr05cu00106.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

📝 TXT Records#

2 records 385ms

TXT Record
MS=ms63157885
v=spf1 a mx include:spf.curanet.dk include:spf.protection.outlook.com include:web.shared.mysmtp.com ~all

✉️ SPF#

Policy	Record (byfiin.dk)
~all (soft fail)	v=spf1 a mx include:spf.curanet.dk include:spf.protection.outlook.com include:web.shared.mysmtp.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 2026-10-09 12:00:18

www	185.21.40.87 (AS48854) (address records, no CNAME)
www vs bare domain	Same network byfiin.dk: 185.21.40.87 (AS48854) www.byfiin.dk: 185.21.40.87 (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: 10/10 · policy: ~all

warn 10 of the 10 allowed DNS lookups used: one more include can break SPF

🔗 TLSA / DANE#

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

🔐 DNSSEC#

500ms

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

🏷️ SOA#

245ms

Field	Value
Serial	2025080401
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 2026-10-15 18:11:28

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2024-08-20
Expires	2027-08-19 (305d)

🔗 Same registrant#

0 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

253ms

249ms

240ms

AAAA

165ms

TXT

385ms

CAA

267ms

HTTPS

256ms

TLSA

467ms

SOA

245ms

MTA-STS

188ms

DNSSEC

500ms

SRV

454ms

Total

1947ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 12:00:18	1279ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-25 01:12:30 shown	1947ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 18:16:20	829ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-22 13:17:10	855ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-20 17:49:08	1574ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 18:10:11	779ms	2 NS 1 A 1 MX	🔒 Secure