3k.dk

📜 Historical scan 2026-06-19 18:22:25 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

3k.dk is a .dk domain served by 3 nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com). It was registered on 16 February 1998 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by 3k-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#

3 records 56ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.simply.com	2a02:2339:1:15c::4562:4562 91.197.248.78	ns1.simply.com ns1.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns2.simply.com	185.25.141.15 2a02:2339:4006:101::4562:4562	ns2.simply.com ns2.simply.com	AS48854 team.blue Denmark A/S AS48854 team.blue Denmark A/S
ns3.simply.com	91.197.248.79	ns3.simply.com	AS48854 team.blue Denmark A/S

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 59ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	3k-dk.mail.protection.outlook.com	2a01:111:f403:ca04::4 2a01:111:f403:ca04::9 2a01:111:f403:ca04::e 2a01:111:f403:ca09::6 52.101.68.21 52.101.68.29 52.101.73.22 52.101.73.4	mail-db4pr02cu00204.inbound.protection.outlook.com mail-db7pr03cu00601.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-am4pr0401cu00106.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-dbapr03cu00105.inbound.protection.outlook.com mail-am7pr05cu00106.inbound.protection.outlook.com mail-am0pr83cu00404.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 → 52.98.149.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 470ms

TXT Record
MS=ms72444321
v=spf1 mx ip4:185.221.30.90 ip4:185.221.30.32 include:spf.protection.outlook.com include:spf.simply.com -all

✉️ SPF#

Policy	Record (3k.dk)
-all (hard fail)	v=spf1 mx ip4:185.221.30.90 ip4:185.221.30.32 include:spf.protection.outlook.com include:spf.simply.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 2026-10-12 17:58:26

www	185.221.30.6 (AS31027) (address records, no CNAME)
www vs bare domain	Only www resolves 3k.dk: no address www.3k.dk: 185.221.30.6 (AS31027) (all like this)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	Published: key rollovers can be automated with the registry (RFC 7344/8078) 1 CDS, 1 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-3k-dk._domainkey.3kdk.onmicrosoft.com	RSA · ~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: 3/10 · 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	resolution failed: ncache nxrrset

🏷️ SOA#

41ms

Field	Value
Serial	2024031200
Primary NS (MNAME)	ns1.simply.com
Responsible (RNAME)	hostmaster@simply.com
Refresh	14400s
Retry	3600s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-09 19:06:01

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	1998-02-16
Expires	2027-03-31 (154d)

📋 WHOIS#

⏱️ Lookup Timing#

56ms

53ms

59ms

AAAA

50ms

TXT

470ms

CAA

65ms

HTTPS

45ms

TLSA

2046ms

SOA

41ms

MTA-STS

108ms

DNSSEC

119ms

SRV

2090ms

Total

4568ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-12 17:58:26	1627ms	3 NS 0 A 1 MX	🔒 Secure
2026-10-03 07:19:38	980ms	3 NS 0 A 1 MX	🔒 Secure
2026-10-02 11:09:08	1114ms	3 NS 0 A 1 MX	🔒 Secure
2026-09-27 10:38:49	1184ms	3 NS 0 A 1 MX	🔒 Secure
2026-08-27 02:41:20	1407ms	3 NS 0 A 1 MX	🔒 Secure
2026-08-26 02:05:49	858ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-28 13:22:52	780ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-24 14:31:30	3153ms	3 NS 0 A 1 MX	⚠️ Bogus
2026-06-23 12:12:43	1096ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-19 18:22:25 shown	4568ms	3 NS 0 A 1 MX	🔒 Secure
2026-06-16 12:47:13	1090ms	3 NS 0 A 1 MX	🔒 Secure