rtcu.dk

📜 Historical scan 2026-06-23 15:00:42 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rtcu.dk is a .dk domain with no delegation in this scan. It was registered on 8 September 2000 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. 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#

🖥️

No NS records found

🌍 A Records#

🌍

No A records found

📧 MX Records#

📧

No MX records found

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

📝

No TXT records found

✉️ SPF#

✗ No SPF record — mail spoofing not restricted

📨 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 2026-10-17 04:07:19

www CNAME	www.logicio.com (all on logicio.com) → 5.186.32.148 (AS44869)
www vs bare domain	Same network rtcu.dk: 5.186.32.148 (AS44869) www.rtcu.dk: 5.186.32.148 (AS44869)
Wildcard	No
Denial of existence	NSEC zone can be walked (all names enumerable)
CDS / CDNSKEY	None 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found

Selector	CNAME	Key
google	—	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.

🔗 TLSA / DANE#

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

🔐 DNSSEC#

491ms

Check	Result
Validation Status	Not applicable: the domain has no delegation, so there is no zone to validate (stored verdict: ❓ Unknown).
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✗ Not found
Flags	resolution failed: failure

🏷️ SOA#

✗ No SOA record found

📋 Registration#

WHOIS fetched 2026-10-18 10:37:44

Field	Value
Registrar	dns.services ApS
Registered	2000-09-08
Expires	2027-09-30 (345d)

🔗 Same registrant#

2 domains

Other .dk domains whose WHOIS registrant has the same name and postal address. Matched on a keyed hash: the registrant's details are not stored or shown. Covers only domains whose WHOIS we have fetched (refreshed about monthly).

Domain	Registrar
m2mstudio.dk	dns.services ApS
speedmaster.dk	dns.services ApS

📋 WHOIS#

⏱️ Lookup Timing#

161ms

172ms

176ms

AAAA

188ms

TXT

485ms

CAA

162ms

HTTPS

192ms

TLSA

17ms

SOA

194ms

MTA-STS

174ms

DNSSEC

491ms

SRV

224ms

Total

1164ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-04 09:52:13	448ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-24 20:58:05	624ms	3 NS 1 A 1 MX	🔒 Secure
2026-09-01 11:18:47	693ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-19 16:26:39	9307ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-18 09:20:14	1269ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-16 08:41:18	1157ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-27 13:13:31	3566ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-23 15:00:42 shown	1164ms	0 NS 0 A 0 MX	❓ Unknown
2026-06-18 03:00:53	651ms	3 NS 1 A 1 MX	🔒 Secure