rcosecurity.dk

📜 Historical scan 2026-09-23 12:04:51 · ← Latest scan

⬇ Zone File 📜 Timeline & History ⚡ Scan Now

rcosecurity.dk is a .dk domain served by 4 nameservers (dns01.dipcon.com, dns02.ports.se, dns03.ports.se and 1 more). It was registered on 29 December 2011 (WHOIS) and was already in the .dk zone when our tracking began on 16 June 2026. Its website address 193.14.90.203 is hosted by Tele2 SWIPnet (AS1257) in Sweden. Mail is handled by mailfilter.itsnordic.se, mailfilter2.itsnordic.se. 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#

4 records 57ms

Nameserver	IP addresses	PTR	ASN / ISP
dns01.dipcon.com	193.14.90.50 2a00:801:fb:253::4	dns01.dipcon.com dns01.dipcon.com	AS1257 Tele2 SWIPnet AS1257 Tele2 SWIPnet
dns02.ports.se	2001:19f0:5001:2a:5400:ff:fe38:1e6f 45.63.42.179	dns02.ports.se dns02.ports.se	AS20473 The Constant Company, LLC AS20473 The Constant Company, LLC
dns03.ports.se	2a04:3540:1000:310:287e:f6ff:fe1d:4789 94.237.33.102	dns03.ports.se dns03.ports.se	AS202053 UpCloud Ltd AS202053 UpCloud Ltd
dns04.ports.net	158.255.211.116 2a03:f80:ed15:3ec8::1	dns04.ports.net dns04.ports.net	AS57169 EDIS GmbH AS57169 EDIS GmbH

🌍 A Records#

1 records 47ms

IP	TTL	PTR	ASN	ISP / Org	CIDR	Country	City
193.14.90.203	3600s	redirect.portsit.se	AS1257	Tele2 SWIPnet	193.12.0.0/14	🇸🇪 Sweden	Malmö

📧 MX Records#

2 records 56ms

Priority	TTL	Mail Server	IP addresses	PTR	ASN
10	3600s	mailfilter.itsnordic.se	185.45.120.10	—	AS1257 Tele2 SWIPnet
10	3600s	mailfilter2.itsnordic.se	—	—	—

🔷 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#

Policy	Record (_dmarc.rcosecurity.dk)
p=none (monitor only)	v=DMARC1; p=none; rua=mailto:isdtvlhs@ag.eu.dmarcadvisor.com;

📬 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 2026-10-08 02:19:02

www	193.14.90.203 (AS1257) (address records, no CNAME)
www vs bare domain	Same network rcosecurity.dk: 193.14.90.203 (AS1257) www.rcosecurity.dk: 193.14.90.203 (AS1257)
Wildcard	No

🔗 TLSA / DANE#

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

🔐 DNSSEC#

81ms

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	2022090900
Primary NS (MNAME)	dns01.dipcon.com
Responsible (RNAME)	registry@ports.net
Refresh	1800s
Retry	900s
Expire	1814400s
Minimum (neg-cache TTL)	3600s

📋 Registration#

WHOIS fetched 2026-10-15 11:53:04

Field	Value
Registrar	Abion AB
Registered	2011-12-29
Expires	2026-12-31 (75d)

🔗 Same registrant#

0 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).

No other domain with this registrant in our WHOIS data yet

📋 WHOIS#

⏱️ Lookup Timing#

57ms

47ms

56ms

AAAA

44ms

TXT

528ms

CAA

33ms

HTTPS

62ms

TLSA

122ms

SOA

0ms

MTA-STS

96ms

DNSSEC

81ms

SRV

588ms

Total

1106ms

🕐 Scan History#

Scanned At	Duration	Records	DNSSEC
2026-10-08 02:19:02	820ms	4 NS 1 A 2 MX	🔓 Insecure
2026-09-23 12:04:51 shown	1106ms	4 NS 1 A 2 MX	🔓 Insecure
2026-06-18 08:11:45	829ms	4 NS 1 A 2 MX	🔓 Insecure