bifrons.dk

📜 Historical scan 2026-09-30 22:04:59 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

bifrons.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 185.21.40.100 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by bifrons-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 33ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.40.100	3600s	vm1176.enterprisecloud.nu	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 41ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	43200s	bifrons-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca21::c 2a01:111:f403:ca3c::6 2a01:111:f403:ca48::8 52.101.103.137 52.101.103.143 52.101.185.21 52.101.73.126	mail-db4pr02cu00204.inbound.protection.outlook.com mail-matpr04cu00204.inbound.protection.outlook.com mail-zrxpr04cu00106.inbound.protection.outlook.com mail-miypr02cu00100.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-zrxpr05cu00105.inbound.protection.outlook.com mail-am8pr83cu00106.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 66ms

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

📝 TXT Records#

2 records 150ms

TXT Record
MS=ms60825594
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (bifrons.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 11:03:48

www CNAME	bifrons.dk (all on bifrons.dk) → 185.21.40.100 (AS48854)
www vs bare domain	Same network bifrons.dk: 185.21.40.100 (AS48854) www.bifrons.dk: 185.21.40.100 (AS48854)
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#

119ms

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

🏷️ SOA#

45ms

Field	Value
Serial	2026093001
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 2026-10-06 01:29:49

Field	Value
Registrar	Namehost by CoMaSys ApS
Registered	2019-02-10
Expires	2027-02-28 (128d)

📋 WHOIS#

⏱️ Lookup Timing#

35ms

33ms

41ms

AAAA

34ms

TXT

150ms

CAA

42ms

HTTPS

36ms

TLSA

613ms

SOA

45ms

MTA-STS

70ms

DNSSEC

119ms

SRV

66ms

Total

1308ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-06 01:12:13	5272ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 00:56:45	853ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-30 22:04:59 shown	1308ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-24 20:34:30	843ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-23 15:09:32	1348ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-19 05:35:32	6480ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-18 04:50:34	5899ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-17 02:00:39	7909ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-16 14:30:00	689ms	2 NS 1 A 1 MX	🔒 Secure