tk.dk

📜 Historical scan 2026-10-01 07:24:22 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

tk.dk is a .dk domain served by 2 nameservers (ns1.curanet.dk, ns2.curanet.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Its website address 35.214.183.36 is hosted by Google Ireland Limited (AS43515) in The Netherlands. Mail is handled by tk-dk.mail.protection.outlook.com. The zone is DNSSEC-signed and validates, 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#

2 records 39ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.curanet.dk	185.25.141.12 2a02:2339:4006:108::123	ns1.curanet.dk ns1.curanet.dk	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.curanet.dk	2a02:2339:1:10f::123:123 91.197.248.75	ns2.curanet.dk ns2.curanet.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
35.214.183.36	900s	36.183.214.35.bc.googleusercontent.com	AS43515	Google Ireland Limited	35.214.128.0/17	🇳🇱 The Netherlands	Groningen

📧 MX Records#

1 records 38ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	tk-dk.mail.protection.outlook.com	2a01:111:f403:ca04::9 2a01:111:f403:ca04::f 2a01:111:f403:ca09::a 2a01:111:f403:ca3c::6 52.101.185.21 52.101.209.153 52.101.91.153 52.101.91.21	mail-db7pr03cu00601.inbound.protection.outlook.com mail-db7pr03cu00507.inbound.protection.outlook.com mail-am7pr02cu00202.inbound.protection.outlook.com mail-zrxpr04cu00106.inbound.protection.outlook.com mail-zrxpr05cu00105.inbound.protection.outlook.com mail-cpjpr04cu00101.inbound.protection.outlook.com mail-matpr04cu00101.inbound.protection.outlook.com mail-matpr05cu00105.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 59ms

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

📝 TXT Records#

3 records 119ms

TXT Record
mAL8GJA4kDuslnVfpTAVWDvUrPKt+j/r9TkWOFu9OrlklqqItXAiW84nIjPvNbJi+LsBUkCpXxR4aJy/RZXz8A==
MS=ms29207554
v=spf1 ip4:62.242.33.91 ip4:90.182.128.186 include:spf.hostnordic.com include:spf.itsecurity.dk -all

✉️ SPF#

Policy	Record (tk.dk)
-all (hard fail)	v=spf1 ip4:62.242.33.91 ip4:90.182.128.186 include:spf.hostnordic.com include:spf.itsecurity.dk -all

📨 DMARC#

Policy	Record (_dmarc.tk.dk)
p=reject	v=DMARC1; p=reject; pct=100; rua=mailto:dmarc@itsecurity.dk

📬 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 10:49:43

www	35.214.183.36 (AS43515) (address records, no CNAME)
www vs bare domain	Same network tk.dk: 35.214.183.36 (AS43515) www.tk.dk: 35.214.183.36 (AS43515)
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

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-tk-dk._domainkey.tkdevelopment.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: 6/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

89ms

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

🏷️ SOA#

44ms

Field	Value
Serial	2022040502
Primary NS (MNAME)	ns1.curanet.dk
Responsible (RNAME)	hostmaster@curanet.dk
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	300s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

39ms

43ms

38ms

AAAA

28ms

TXT

119ms

CAA

34ms

HTTPS

36ms

TLSA

652ms

SOA

44ms

MTA-STS

51ms

DNSSEC

89ms

SRV

59ms

Total

1138ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 10:49:43	1075ms	2 NS 1 A 1 MX	🔒 Secure
2026-10-01 07:24:22 shown	1138ms	2 NS 1 A 1 MX	🔒 Secure
2026-09-04 02:07:50	839ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-27 14:35:11	1824ms	2 NS 1 A 1 MX	🔒 Secure
2026-06-17 19:25:38	820ms	2 NS 1 A 1 MX	🔒 Secure