slkholding.dk

Records from scan: 2026-09-16 05:37:37 · 1495ms total · last checked 2026-10-17 02:04 (unchanged)

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

slkholding.dk is a .dk domain served by 2 nameservers (ns1.dns-sec.dk, ns2.dns-sec.dk). It was already in the .dk zone when our tracking began on 16 June 2026. Mail is handled by slkholding-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, has no DMARC policy and has no IPv6 address. Below are all of its DNS records from our latest 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.dns-sec.dk	92.241.203.106	ns1.dns-sec.dk	AS3342 Cibicom A/S
ns2.dns-sec.dk	92.241.203.107	ns2.dns-sec.dk	AS3342 Cibicom A/S

🌍 A Records#

🌍

No A records found

📧 MX Records#

1 records 22ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	slkholding-dk.mail.protection.outlook.com	2a01:111:f403:c967::a 2a01:111:f403:ca04::a 2a01:111:f403:ca04::e 2a01:111:f403:ca48::10 52.101.181.153 52.101.68.21 52.101.73.145 52.101.73.153	mail-cpjpr05cu00102.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-miypr05cu00100.inbound.protection.outlook.com mail-wa4pr04cu00101.inbound.protection.outlook.com mail-db4pr02cu00205.inbound.protection.outlook.com mail-am6pr02cu00301.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 → 52.98.154.136

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records 175ms

TXT Record
v=spf1 include:_spf.rntech.dk include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (slkholding.dk)
-all (hard fail)	v=spf1 include:_spf.rntech.dk 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#

checked 2026-09-30 09:33:43

www	NXDOMAIN
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-slkholding-dk._domainkey.lknu.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: 2/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

90ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: ncache nxrrset

🏷️ SOA#

0ms

Field	Value
Serial	2025020810
Primary NS (MNAME)	ns1.dns-sec.dk
Responsible (RNAME)	admin@dns-sec.dk
Refresh	900s
Retry	1200s
Expire	1209600s
Minimum (neg-cache TTL)	3600s

📋 Registration#

✗ No registration data yet — queued for a WHOIS lookup

📋 WHOIS#

⏱️ Lookup Timing#

39ms

30ms

22ms

AAAA

31ms

TXT

175ms

CAA

35ms

HTTPS

32ms

TLSA

526ms

SOA

0ms

MTA-STS

58ms

DNSSEC

90ms

SRV

103ms

Total

1495ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-16 05:37:37 shown	1495ms	2 NS 0 A 1 MX	🔓 Insecure
2026-08-31 20:40:48	920ms	2 NS 0 A 1 MX	🔓 Insecure
2026-07-02 19:35:49	1864ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-18 19:08:16	8817ms	2 NS 0 A 1 MX	🔓 Insecure
2026-06-17 11:52:51	788ms	2 NS 0 A 1 MX	⚠️ Bogus