rsmdk.dk

📜 Historical scan 2026-08-27 06:16:25 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rsmdk.dk is a .dk domain served by 2 nameservers (ns1.alco.dk, ns2.alco.dk). It was registered on 11 June 2015 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 216.24.57.1 is hosted by Render (AS397273) in United States. Mail is handled by rsmdk-dk.mail.protection.outlook.com. The zone is not DNSSEC-signed, publishes a DMARC policy and has no IPv6 address. 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#

2 records 48ms

Nameserver	IP addresses	PTR	ASN / ISP
ns1.alco.dk	46.225.229.1	ns1.alco.dk	AS24940 Hetzner Online GmbH
ns2.alco.dk	89.167.94.156	ns2.alco.dk	AS24940 Hetzner Online GmbH

🌍 A Records#

1 records 76ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
216.24.57.1	3600s	ip-216-24-57-1.ingress.render.com	AS397273	Render	216.24.57.0/24	🇺🇸 United States	—

📧 MX Records#

1 records 47ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	3600s	rsmdk-dk.mail.protection.outlook.com	2a01:111:f403:ca04::10 2a01:111:f403:ca04::a 2a01:111:f403:ca04::e 2a01:111:f403:ca38::8 52.101.103.137 52.101.68.32 52.101.68.39 52.101.73.1	mail-dbapr03cu00100.inbound.protection.outlook.com mail-du0pr03cu00102.inbound.protection.outlook.com mail-db8pr02cu00106.inbound.protection.outlook.com mail-wa4pr04cu00100.inbound.protection.outlook.com mail-miypr02cu00101.inbound.protection.outlook.com mail-db3pr0202cu00200.inbound.protection.outlook.com mail-db7pr03cu00607.inbound.protection.outlook.com mail-am3pr04cu00501.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 → 40.104.116.24

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

2 records 290ms

TXT Record
MS=ms92240135
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

Policy	Record (rsmdk.dk)
-all (hard fail)	v=spf1 include:spf.protection.outlook.com -all

📨 DMARC#

Policy	Record (_dmarc.rsmdk.dk)
p=reject	v=DMARC1; p=reject; rua=mailto:DMARC@rsmdk.dk; ruf=mailto:DMARC@rsmdk.dk; fo=1;

📬 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 18:59:56

www CNAME	rsmdk.dk (all on rsmdk.dk) → 216.24.57.1 (AS397273)
www vs bare domain	Same network rsmdk.dk: 216.24.57.1 (AS397273) www.rsmdk.dk: 216.24.57.1 (AS397273)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-rsmdk-dk._domainkey.brandtrevision.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: 1/10 · policy: -all

No problems found

🔗 TLSA / DANE#

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

🔐 DNSSEC#

93ms

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

🏷️ SOA#

0ms

Field	Value
Serial	2025121815
Primary NS (MNAME)	ns1.alco.dk
Responsible (RNAME)	hostmaster@alco.dk
Refresh	28800s
Retry	7200s
Expire	604800s
Minimum (neg-cache TTL)	43200s

📋 Registration#

WHOIS fetched 2026-10-17 19:56:07

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2015-06-11
Expires	2027-06-30 (251d)

🔗 Same registrant#

15 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
brandt-revision.dk	Punktum dk A/S (direct)
brandtadministration.dk	Punktum dk A/S (direct)
brandtrevision.dk	Punktum dk A/S (direct)
brandtrevisor.dk	Punktum dk A/S (direct)
bsp.dk	Punktum dk A/S (direct)
jh-revision.dk	Punktum dk A/S (direct)
moorestephens.dk	Punktum dk A/S (direct)
revisionbrandt.dk	Punktum dk A/S (direct)
revisionskontoretvest.dk	Punktum dk A/S (direct)
rgkbh.dk	Punktum dk A/S (direct)
rrcj.dk	Punktum dk A/S (direct)
rsm.dk	CURANET A/S
rsmregnskab.dk	Punktum dk A/S (direct)
rsmrevision.dk	Punktum dk A/S (direct)
vprevision.dk	Punktum dk A/S (direct)

📋 WHOIS#

⏱️ Lookup Timing#

48ms

76ms

47ms

AAAA

51ms

TXT

290ms

CAA

72ms

HTTPS

80ms

TLSA

550ms

SOA

0ms

MTA-STS

80ms

DNSSEC

93ms

SRV

104ms

Total

1217ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-08-31 12:09:56	1392ms	2 NS 1 A 1 MX	🔓 Insecure
2026-08-27 06:16:25 shown	1217ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-24 11:32:09	2727ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-20 04:34:51	4676ms	2 NS 1 A 1 MX	🔓 Insecure
2026-06-18 00:22:35	2321ms	2 NS 1 A 1 MX	🔓 Insecure