bifron.dk DNS records

🖥️ Nameservers2 records 33ms

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 Records1 records 42ms

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	Ringsted

📧 MX Records1 records 40ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	bifron-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca09::5 2a01:111:f403:ca09::9 2a01:111:f403:ca09::e 52.101.68.10 52.101.68.12 52.101.68.3 52.101.73.153	mail-db7pr03cu00601.inbound.protection.outlook.com mail-am1pr04cu00105.inbound.protection.outlook.com mail-as8pr04cu00801.inbound.protection.outlook.com mail-am7pr05cu00206.inbound.protection.outlook.com mail-dbbpr03cu00102.inbound.protection.outlook.com mail-db9pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00403.inbound.protection.outlook.com mail-as8pr05cu00401.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 Records1 records 70ms

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

📝 TXT Records2 records 165ms

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

🔗 TLSA / DANE

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

🔐 DNSSEC87ms

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

🏷️ SOA0ms

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

✗ No registration data — collected automatically when SOA serial changes

📋 WHOIS

⏱️ Lookup Timing

NS

33ms

A

42ms

MX

40ms

AAAA

46ms

TXT

165ms

CAA

46ms

HTTPS

32ms

TLSA

680ms

SOA

0ms

MTA-STS

64ms

DNSSEC

87ms

SRV

70ms

Total

1262ms

🕐 Scan History

Scanned At	Duration	Records	DNSSEC
2026-08-26 12:39:30	1262ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-08-16 22:26:36	5127ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-07-10 02:22:20	5663ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-25 06:07:24	1237ms	2 NS 1 A 1 MX	🔒 Secure	View
2026-06-24 00:34:23	904ms	0 NS 0 A 0 MX	❓ Unknown	View
2026-06-16 14:29:11	668ms	2 NS 1 A 1 MX	🔒 Secure	View