rkmc.dk

📜 Historical scan 2026-08-05 18:17:21  ·  ← Latest scan
⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rkmc.dk is a .dk domain served by 3 nameservers (ns.inwx.de, ns2.inwx.de, ns3.inwx.eu). It was registered on 19 April 2022 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 157.90.1.81 is hosted by Hetzner Online GmbH (AS24940) in Germany. Mail is handled by mail.rkmc.dk, www.koehlercloud.it. The zone is not DNSSEC-signed, publishes a DMARC policy and is reachable over IPv6. 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   448ms
NameserverIP addressesPTRASN / ISP
ns.inwx.de 192.174.68.104
2001:67c:1bc::104		 ns.inwx.de
ns.inwx.ch		 AS1921 ipcom GmbH
AS1921 ipcom GmbH
ns2.inwx.de 176.97.158.104
2001:67c:10b8::104		 b.xnameserver.de
ns2.inwx.es		 AS207021 ipcom GmbH
AS1921 ipcom GmbH
ns3.inwx.eu 2a02:d500::53
45.87.158.53		 c.xnameserver.de
c.xnameserver.de		 AS48596 InterNetworX Management GmbH
AS48596 InterNetworX Management GmbH

🌍 A Records#

1 records   579ms
IPTTLPTRASNISP / OrgCIDRCountryCity
157.90.1.81 3600s www.koehlercloud.it AS24940 Hetzner Online GmbH 157.90.0.0/16 🇩🇪 Germany Falkenstein

📧 MX Records#

2 records   572ms
PriorityTTLMail ServerIP addressesPTRASN
10 3600s mail.rkmc.dk 157.90.1.81
2a01:4f8:251:292f::18		 www.koehlercloud.it
www.rkmc.dk		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH
20 3600s www.koehlercloud.it 157.90.1.81
2a01:4f8:251:292f::1		 www.koehlercloud.it
www.koehlercloud.eu		 AS24940 Hetzner Online GmbH
AS24940 Hetzner Online GmbH

🔷 AAAA Records (IPv6)#

1 records   565ms
IPv6 AddressTTLPTRASNISP / OrgCIDRCountryCity
2a01:4f8:251:292f::18 3600s www.rkmc.dk AS24940 Hetzner Online GmbH 2a01:4f8:0:0:0:0:0:0/31 🇩🇪 Germany Falkenstein

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

1 records   1090ms
TXT Record
v=spf1 a mx include:_spf.google.com include:mout.gmx.net include:mout.web.de -all

✉️ SPF#

PolicyRecord (rkmc.dk)
-all (hard fail) v=spf1 a mx include:_spf.google.com include:mout.gmx.net include:mout.web.de -all

📨 DMARC#

PolicyRecord (_dmarc.rkmc.dk)
p=reject v=DMARC1; p=reject; pct=100

📬 MTA-STS#

✗ No MTA-STS policy — SMTP TLS not enforced

📈 TLSRPT#

✗ No TLSRPT record — no SMTP TLS failure reporting

📜 CAA Records#

2 records   566ms
FlagsTagValue
0 iodef caa@koehlercloud.it
0 issue letsencrypt.org

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-16 09:26:41
www CNAMErkmc.dk (all on rkmc.dk)
www vs bare domainSame network
WildcardNo
Denial of existenceNSEC zone can be walked (all names enumerable)
CDS / CDNSKEYNone 0 CDS, 0 CDNSKEY

✍️ DKIM keys#

1 found
SelectorCNAMEKey
default — 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: 5/10 · policy: -all

  • error include:mout.gmx.net has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)
  • error include:mout.web.de has no SPF record: receivers that reach it return permerror (RFC 7208 §5.2)

🔏 ACME Challenge#

TypeNameValue
TXT _acme-challenge.rkmc.dk rXjXvheEGX5O3eHo2yD9Cr4fFP5yEN8N_rXH09NhRWI

🔗 TLSA / DANE#

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

🔐 DNSSEC#

784ms
CheckResult
Validation Status🔓 Insecure
AD Flag (resolver validates)✗ Not set
DS Record✗ Not found
DNSKEY Record✓ Found
Flagsunsigned answer

🏷️ SOA#

0ms
FieldValue
Serial2026061718
Primary NS (MNAME)ns.inwx.de
Responsible (RNAME)info@rkmc.dk
Refresh1800s
Retry300s
Expire1209600s
Minimum (neg-cache TTL)10800s

📋 Registration#

WHOIS fetched 2026-10-09 19:15:05
FieldValue
RegistrarASCIO TECHNOLOGIES, CORP. DANMARK - FILIAL AF ASCIO TECHNOLOGIES, CORP. CANADA
Registered2022-04-19
Expires2027-04-18 (181d)
📋 WHOIS#

⏱️ Lookup Timing#

NS
448ms
A
579ms
MX
572ms
AAAA
565ms
TXT
1090ms
CAA
566ms
HTTPS
573ms
TLSA
901ms
SOA
0ms
MTA-STS
600ms
DNSSEC
784ms
SRV
582ms
Total
3849ms

🕐 Scan History#

Scanned AtDurationRecordsDNSSEC
2026-10-16 09:26:41 1250ms 3 NS 1 A 2 MX 🔓 Insecure
2026-10-14 04:53:27 936ms 3 NS 1 A 2 MX 🔓 Insecure
2026-10-12 03:16:01 2803ms 3 NS 1 A 2 MX 🔓 Insecure
2026-10-10 00:47:48 1172ms 3 NS 1 A 2 MX 🔓 Insecure
2026-10-08 13:27:50 1409ms 3 NS 1 A 2 MX 🔓 Insecure
2026-10-06 01:04:25 2597ms 3 NS 1 A 2 MX 🔓 Insecure
2026-10-04 00:35:10 1015ms 3 NS 1 A 2 MX 🔓 Insecure
2026-09-24 23:08:41 1697ms 3 NS 1 A 2 MX 🔓 Insecure
2026-09-23 22:25:00 1829ms 3 NS 1 A 2 MX 🔓 Insecure
2026-09-17 19:30:24 1699ms 3 NS 1 A 2 MX 🔓 Insecure
2026-09-13 17:57:19 7942ms 3 NS 1 A 2 MX 🔓 Insecure
2026-09-06 17:26:24 2700ms 3 NS 1 A 2 MX 🔓 Insecure
2026-08-29 17:24:51 2128ms 3 NS 1 A 2 MX 🔓 Insecure
2026-08-28 16:13:33 3484ms 3 NS 1 A 2 MX 🔓 Insecure
2026-08-27 14:52:26 2042ms 3 NS 1 A 2 MX 🔓 Insecure
2026-08-26 13:57:07 1497ms 3 NS 1 A 2 MX 🔓 Insecure
2026-08-21 16:06:05 2863ms 3 NS 1 A 2 MX 🔓 Insecure
2026-08-19 09:59:32 10304ms 3 NS 1 A 2 MX 🔓 Insecure
2026-08-18 09:59:07 6349ms 3 NS 1 A 2 MX 🔓 Insecure
2026-08-07 03:53:59 3168ms 3 NS 1 A 2 MX 🔓 Insecure
2026-08-05 18:17:21 shown 3849ms 3 NS 1 A 2 MX 🔓 Insecure
2026-08-01 09:43:54 3564ms 3 NS 1 A 2 MX 🔓 Insecure
2026-07-30 00:48:03 11550ms 3 NS 1 A 2 MX 🔓 Insecure
2026-07-28 13:42:28 1718ms 3 NS 1 A 2 MX 🔓 Insecure
2026-07-18 00:17:04 2145ms 3 NS 1 A 2 MX 🔓 Insecure
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