dtk.dk

📜 Historical scan 2026-09-20 05:22:42 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

dtk.dk is a .dk domain served by 4 nameservers (ns1.eurodns.com, ns2.eurodns.com, ns3.eurodns.com and 1 more). It was registered on 18 December 1996 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 80.92.65.137 is hosted by Datacenter Luxembourg S.A. (AS24611) in Luxembourg. Mail is handled by dtk-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a 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#

4 records 45ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.eurodns.com	199.167.66.107 2610:1c8:b002::107	ns1.eurodns.com ns1.eurodns.com	AS23393 NuCDN LLC AS23393 NuCDN LLC
ns2.eurodns.com	104.37.178.107 2610:1c8:b001::107	ns2.eurodns.com ns2.eurodns.com	AS23393 NuCDN LLC AS23393 NuCDN LLC
ns3.eurodns.com	199.167.66.108 2610:1c8:b002::108	ns3.eurodns.com ns3.eurodns.com	AS23393 NuCDN LLC AS23393 NuCDN LLC
ns4.eurodns.com	104.37.178.108 2610:1c8:b001::108	ns4.eurodns.com ns4.eurodns.com	AS23393 NuCDN LLC AS23393 NuCDN LLC

🌍 A Records#

1 records 35ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
80.92.65.137	3600s	80-92-65-137.ip.dclux.com	AS24611	Datacenter Luxembourg S.A.	80.92.64.0/19	🇱🇺 Luxembourg	Luxembourg

📧 MX Records#

1 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	dtk-dk.mail.protection.outlook.com	2a01:111:f403:ca09::24 2a01:111:f403:ca21::10 2a01:111:f403:ca3c::a 2a01:111:f403:ca48::e 52.101.103.143 52.101.181.156 52.101.68.21 52.101.91.162	mail-am6pr02cu00204.inbound.protection.outlook.com mail-matpr05cu00100.inbound.protection.outlook.com mail-zrxpr07cu00102.inbound.protection.outlook.com mail-miypr03cu00206.inbound.protection.outlook.com mail-miypr03cu00107.inbound.protection.outlook.com mail-wa4pr05cu00104.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-matpr04cu00302.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 83ms

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

📝 TXT Records#

1 records 252ms

TXT Record
v=spf1 ip4:31.209.188.114 ip4:193.104.43.14 ip4:194.239.235.17 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (dtk.dk)
-all (hard fail)	v=spf1 ip4:31.209.188.114 ip4:193.104.43.14 ip4:194.239.235.17 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.dtk.dk)
p=reject	v=DMARC1; p=reject;

📬 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 01:08:05

www	80.92.65.137 (AS24611) (address records, no CNAME)
www vs bare domain	Same network dtk.dk: 80.92.65.137 (AS24611) www.dtk.dk: 80.92.65.137 (AS24611)
Wildcard	No

✍️ DKIM keys#

2 found

Selector	CNAME	Key
selector1	selector1-dtk-dk._domainkey.dtkas.onmicrosoft.com	RSA · ~1024 bit below 2048 bit
selector2	selector2-dtk-dk._domainkey.dtkas.onmicrosoft.com	RSA · ~1024 bit below 2048 bit

DKIM selectors can't be listed, so we check the common ones (Microsoft 365, Google, Mailchimp, SendGrid, generic). Keys under other selectors aren't shown.

🔎 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#

113ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	unsigned answer

🏷️ SOA#

0ms

Field	Value
Serial	2026091900
Primary NS (MNAME)	ns1.eurodns.com
Responsible (RNAME)	hostmaster@eurodns.com
Refresh	43200s
Retry	7200s
Expire	1209600s
Minimum (neg-cache TTL)	86400s

📋 Registration#

WHOIS fetched 2026-10-10 19:00:55

Field	Value
Registrar	Eurodns S.A
Registered	1996-12-18
Expires	2026-12-31 (72d)

📋 WHOIS#

⏱️ Lookup Timing#

45ms

35ms

38ms

AAAA

48ms

TXT

252ms

CAA

36ms

HTTPS

44ms

TLSA

737ms

SOA

0ms

MTA-STS

69ms

DNSSEC

113ms

SRV

83ms

Total

2552ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-23 19:52:50	1321ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-23 07:52:52	1499ms	4 NS 1 A 1 MX	🔓 Insecure
2026-09-20 05:22:42 shown	2552ms	4 NS 1 A 1 MX	🔓 Insecure
2026-08-27 06:57:43	10504ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-26 13:18:22	2394ms	4 NS 1 A 1 MX	🔓 Insecure
2026-06-17 04:50:24	675ms	4 NS 1 A 1 MX	🔓 Insecure