rcs-security.dk

📜 Historical scan 2026-07-29 10:13:43 · ← Latest scan

🧟 Lame delegation ⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rcs-security.dk is a registered .dk domain whose nameservers (ns1.simply.com, ns2.simply.com, ns3.simply.com) do not answer for it, so it is currently a lame delegation and does not resolve. It was registered on 7 July 2024 (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#

3 records 330ms

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#

📧

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 2026-10-09 14:40:23

www	93.191.156.161 (AS48854) (address records, no CNAME)
www vs bare domain	Same network rcs-security.dk: 93.191.156.161 (AS48854) www.rcs-security.dk: 93.191.156.161 (AS48854)
Wildcard	Yes: any name under the zone resolves
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

🔗 TLSA / DANE#

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

🔐 DNSSEC#

492ms

Check	Result
Validation Status	⚠️ Bogus — the parent still publishes a DS record, but the delegated nameservers don't answer, so no signed answer can be fetched. The zone isn't serving broken signatures; it isn't serving at all.
AD Flag (resolver validates)	✗ Not set
DS Record	✓ Found
DNSKEY Record	✗ Not found
Flags	resolution failed: failure

🏷️ SOA#

✗ No SOA record found

📋 Registration#

WHOIS fetched 2026-10-03 06:40:17

Field	Value
Registrar	Simply.com A/S
Registered	2024-07-07
Expires	2027-07-06 (261d)

📋 WHOIS#

⏱️ Lookup Timing#

330ms

372ms

453ms

AAAA

446ms

TXT

1601ms

CAA

439ms

HTTPS

451ms

TLSA

256ms

SOA

171ms

MTA-STS

467ms

DNSSEC

492ms

SRV

453ms

Total

3126ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-09 14:40:23	395ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-03 06:03:36	457ms	3 NS 1 A 1 MX	🔒 Secure
2026-10-01 05:56:16	533ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-27 07:00:31	754ms	3 NS 1 A 1 MX	🔒 Secure
2026-08-06 20:42:15	933ms	3 NS 1 A 1 MX	🔒 Secure
2026-07-29 10:13:43 shown	3126ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-27 07:55:41	16919ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-26 07:20:17	4259ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-25 06:59:28	1183ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-24 06:36:53	1432ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-23 05:34:40	1285ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-22 04:39:28	1426ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-20 16:03:24	1334ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-19 15:15:42	1141ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-18 10:46:51	9723ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-17 07:47:52	9352ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-14 17:00:39	1427ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-13 16:41:05	1831ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-12 03:53:32	1302ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-10 23:24:11	1325ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-07-08 13:41:52	8942ms	3 NS 0 A 0 MX	⚠️ Bogus
2026-06-20 06:55:58	616ms	3 NS 1 A 1 MX	🔒 Secure
2026-06-17 12:18:18	796ms	3 NS 1 A 1 MX	🔒 Secure