cls-c.dk

📜 Historical scan 2026-06-16 21:26:15 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

cls-c.dk is a .dk domain served by 3 nameservers (ns01.procopa.dk, ns02.procopa.dk, ns05.procopa.dk). It was registered on 18 August 2021 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 185.237.124.53 is hosted by Procopa IT ApS (AS210939) in Denmark. Mail is handled by clsc-dk0i.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#

3 records 85ms

Nameserver	IP addresses	PTR	ASN / ISP
ns01.procopa.dk	—	—	—
ns02.procopa.dk	—	—	—
ns05.procopa.dk	—	—	—

🌍 A Records#

1 records 73ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
185.237.124.53	—	linux01.hosting.procopa.dk	AS210939	Procopa IT ApS	185.237.124.0/22	🇩🇰 Denmark	Copenhagen

📧 MX Records#

1 records 85ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
0	—	clsc-dk0i.mail.protection.outlook.com	52.101.68.12 52.101.68.16 52.101.68.5 52.101.68.8	mail-db9pr02cu00204.inbound.protection.outlook.com mail-db4pr02cu00400.inbound.protection.outlook.com mail-du2pr03cu00105.inbound.protection.outlook.com mail-du0pr03cu00100.inbound.protection.outlook.com	AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation AS8075 Microsoft Corporation

🔷 AAAA Records (IPv6)#

✗ No AAAA records — IPv6 not configured

🔐 HTTPS Records#

✗ No HTTPS RR — no SVCB/HTTPS service binding

📝 TXT Records#

3 records 157ms

TXT Record
apple-domain-verification=MfAMD66wGUXccuXw
MS=ms50451016
v=spf1 include:spf.protection.outlook.com -all

✉️ SPF#

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

📨 DMARC#

Policy	Record (_dmarc.cls-c.dk)
p=reject	v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; pct=100

📬 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 2026-10-10 01:21:29

www CNAME	cls-c.dk (all on cls-c.dk) → 185.237.124.53 (AS210939)
www vs bare domain	Same network cls-c.dk: 185.237.124.53 (AS210939) www.cls-c.dk: 185.237.124.53 (AS210939)
Wildcard	No

✍️ DKIM keys#

1 found

Selector	CNAME	Key
selector1	selector1-clsc-dk0i._domainkey.clcasdk.q-v1.dkim.mail.microsoft	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#

179ms

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

🏷️ SOA#

78ms

Field	Value
Serial	1743166184
Primary NS (MNAME)	ns01.procopa.dk
Responsible (RNAME)	hostmaster@cls-c.dk
Refresh	3600s
Retry	600s
Expire	1209600s
Minimum (neg-cache TTL)	600s

📋 Registration#

WHOIS fetched 2026-10-05 21:11:21

Field	Value
Registrar	Punktum dk A/S (direct)
Registered	2021-08-18
Expires	2027-08-31 (318d)

📋 WHOIS#

⏱️ Lookup Timing#

85ms

73ms

85ms

AAAA

68ms

TXT

157ms

CAA

93ms

HTTPS

82ms

TLSA

145ms

SOA

78ms

MTA-STS

72ms

DNSSEC

179ms

SRV

0ms

Total

678ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-09-30 23:08:59	934ms	3 NS 1 A 1 MX	🔓 Insecure
2026-09-25 18:28:31	9600ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-20 03:27:01	740ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-20 01:58:47	697ms	3 NS 1 A 1 MX	🔓 Insecure
2026-06-16 21:26:15 shown	678ms	3 NS 1 A 1 MX	🔓 Insecure