bifron.dk

📜 Historical scan 2026-08-16 22:26:36 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

bifron.dk is a .dk domain served by 2 nameservers (ns01.one.com, ns02.one.com). It was registered on 10 February 2019 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 5.103.35.21 is hosted by FIBIA P/S (AS44869) in Denmark. Mail is handled by bifron-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 35ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.one.com	195.206.121.10 2001:67c:28cc::10	ns01.one.com ns01.one.com	AS197495 One.com A/S AS197495 One.com A/S
ns02.one.com	185.10.11.10 2001:67c:3c0::10	ns02.one.com ns02.one.com	AS51468 One.com A/S AS51468 One.com A/S

🌍 A Records#

1 records 47ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
5.103.35.21	43200s	5.103.35.21.static.fibianet.dk	AS44869	FIBIA P/S	5.103.0.0/16	🇩🇰 Denmark	Holbæk

📧 MX Records#

1 records 37ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	bifron-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca04::b 2a01:111:f403:ca09:: 2a01:111:f403:ca09::5 52.101.68.15 52.101.68.16 52.101.68.3 52.101.73.12	mail-db7pr03cu00601.inbound.protection.outlook.com mail-dbbpr03cu00103.inbound.protection.outlook.com mail-am3pr04cu00500.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-db6pr03cu00107.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-db7pr03cu00403.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 → 40.104.116.56

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 67ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	0	1	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 157ms

TXT Record
MS=ms46535715
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (bifron.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 2026-10-08 08:26:38

www CNAME	bifron.dk (all on bifron.dk) → 5.103.35.21 (AS44869)
www vs bare domain	Same network bifron.dk: 5.103.35.21 (AS44869) www.bifron.dk: 5.103.35.21 (AS44869)
Wildcard	No
Denial of existence	NSEC3 · 0 iterations · no salt RFC 9276 ✓
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#

43ms

Field	Value
Serial	2026032402
Primary NS (MNAME)	ns01.one.com
Responsible (RNAME)	hostmaster@one.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-12 16:57:39

Field	Value
Registrar	Namehost by CoMaSys ApS
Registered	2019-02-10
Expires	2027-02-28 (132d)

🔗 Same registrant#

4 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).

Domain	Registrar
dm-tand.dk	Namehost by CoMaSys ApS
mariagade.dk	Namehost by CoMaSys ApS
nehtek.dk	Namehost by CoMaSys ApS
roskildedentist.dk	Namehost by CoMaSys ApS

📋 WHOIS#

⏱️ Lookup Timing#

35ms

47ms

37ms

AAAA

34ms

TXT

157ms

CAA

42ms

HTTPS

37ms

TLSA

176ms

SOA

43ms

MTA-STS

65ms

DNSSEC

85ms

SRV

67ms

Total

5127ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 08:26:38	1046ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 03:20:03	1272ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-28 00:26:07	1435ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 09:07:45	1086ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-26 12:39:30	1262ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-16 22:26:36 shown	5127ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-10 02:22:20	5663ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-25 06:07:24	1237ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-24 00:34:23	904ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-16 14:29:11	668ms	2 NS 1 A 1 MX	🔒 Secure