rkmc.dk

📜 Historical scan 2026-10-14 04:53:27 · ← 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 78ms

Nameserver	IP addresses	PTR	ASN / ISP
ns.inwx.de	192.174.68.104 2001:67c:1bc::104	ns.inwx.ch ns.inwx.ch	AS1921 ipcom GmbH AS1921 ipcom GmbH
ns2.inwx.de	176.97.158.104 2001:67c:10b8::104	ns2.inwx.com ns2.inwx.ch	AS207021 ipcom GmbH AS1921 ipcom GmbH
ns3.inwx.eu	2a02:d500::53 45.87.158.53	c.xnameserver.de ns3.inwx.eu	AS48596 InterNetworX Management GmbH AS48596 InterNetworX Management GmbH

🌍 A Records#

1 records 109ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
157.90.1.81	3600s	www.koehlercloud.it	AS24940	Hetzner Online GmbH	157.90.0.0/16	🇩🇪 Germany	Falkenstein

📧 MX Records#

2 records 88ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
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 54ms

IPv6 Address	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
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 304ms

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

✉️ SPF#

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

📨 DMARC#

Policy	Record (_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 89ms

Flags	Tag	Value
0	iodef	caa@koehlercloud.it
0	issue	letsencrypt.org

🧩 Web & zone#

latest probe, not this scan · checked 2026-10-16 09:26:41

www CNAME	rkmc.dk (all on rkmc.dk) → 157.90.1.81 2a01:4f8:251:292f::18 (AS24940)
www vs bare domain	Same network rkmc.dk: 157.90.1.81 2a01:4f8:251:292f::18 (AS24940) www.rkmc.dk: 157.90.1.81 2a01:4f8:251:292f::18 (AS24940)
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
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#

Type	Name	Value
TXT	_acme-challenge.rkmc.dk	M1xCh32bnA5hedoxRqzBk6YgDhI6FTVMd2S-PU0Tp_M

🔗 TLSA / DANE#

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

🔐 DNSSEC#

176ms

Check	Result
Validation Status	🔓 Insecure
AD Flag (resolver validates)	✗ Not set
DS Record	✗ Not found
DNSKEY Record	✓ Found
Flags	unsigned answer

🏷️ SOA#

56ms

Field	Value
Serial	2026081621
Primary NS (MNAME)	ns.inwx.de
Responsible (RNAME)	info@rkmc.dk
Refresh	1800s
Retry	300s
Expire	1209600s
Minimum (neg-cache TTL)	10800s

📋 Registration#

WHOIS fetched 2026-10-09 19:15:05

Field	Value
Registrar	ASCIO TECHNOLOGIES, CORP. DANMARK - FILIAL AF ASCIO TECHNOLOGIES, CORP. CANADA
Registered	2022-04-19
Expires	2027-04-18 (180d)

📋 WHOIS#

⏱️ Lookup Timing#

78ms

109ms

88ms

AAAA

54ms

TXT

304ms

CAA

89ms

HTTPS

92ms

TLSA

218ms

SOA

56ms

MTA-STS

125ms

DNSSEC

176ms

SRV

176ms

Total

936ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-16 09:26:41	1250ms	3 NS 1 A 2 MX	🔓 Insecure
2026-10-14 04:53:27 shown	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	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