dufour.dk

📜 Historical scan 2026-10-09 03:54:20 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

dufour.dk is a .dk domain served by 2 nameservers (ns.scannet2.dk, ns2.scannet2.dk). It was registered on 6 April 1999 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.21.42.211 is hosted by team.blue Denmark A/S (AS48854) in Denmark. Mail is handled by dufour-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 29ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.scannet2.dk	185.25.141.9 2a02:2339:4006:10d::4171:4171	ns1.scannet.dk ns1.scannet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.scannet2.dk	2a02:2339:1:112:0:5:1:b11 91.197.248.72	ns2.scannet.dk ns2.scannet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S

🌍 A Records#

1 records 43ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.21.42.211	3600s	linux200.scannet.dk	AS48854	team.blue Denmark A/S	185.21.40.0/22	🇩🇰 Denmark	—

📧 MX Records#

1 records 34ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
1	3600s	dufour-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca04::d 2a01:111:f403:ca21::a 2a01:111:f403:ca38::8 52.101.103.39 52.101.181.153 52.101.185.21 52.101.68.25	mail-db7pr03cu00601.inbound.protection.outlook.com mail-db6pr03cu00105.inbound.protection.outlook.com mail-maspr04cu00102.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-miypr05cu00207.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-zrxpr05cu00105.inbound.protection.outlook.com mail-db8pr02cu00101.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 → 52.98.149.152

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

🔌 SRV Records#

1 records 46ms

Service	Priority	Weight	Port	Target
_sipfederationtls._tcp	1	100	5061	sipfed.online.lync.com

📝 TXT Records#

2 records 121ms

TXT Record
MS=ms74010796
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (dufour.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 2026-10-09 12:05:29

www	185.21.42.211 (AS48854) (address records, no CNAME)
www vs bare domain	Same network dufour.dk: 185.21.42.211 (AS48854) www.dufour.dk: 185.21.42.211 (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#

61ms

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

🏷️ SOA#

37ms

Field	Value
Serial	2021020900
Primary NS (MNAME)	ns.scannet2.dk
Responsible (RNAME)	hostmaster@scannet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

WHOIS fetched 2026-10-06 20:58:54

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1999-04-06
Expires	2027-06-30 (255d)

📋 WHOIS#

⏱️ Lookup Timing#

29ms

43ms

34ms

AAAA

25ms

TXT

121ms

CAA

31ms

HTTPS

30ms

TLSA

662ms

SOA

37ms

MTA-STS

60ms

DNSSEC

61ms

SRV

46ms

Total

1046ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 12:05:29	1009ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-09 03:54:20 shown	1046ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 03:02:06	575ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-12 21:04:19	1335ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-02 09:03:08	1077ms	2 NS 1 A 1 MX	🔒 Secure
2026-08-25 13:10:08	712ms	2 NS 1 A 1 MX	🔒 Secure
2026-07-01 23:59:24	929ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 04:55:34	1881ms	2 NS 1 A 1 MX	🔒 Secure