Host

217.28.63.71

Tags: Self-signed certificate Expired certificate

As of our latest check on 2026-06-08, 217.28.63.71 (RETN Limited, AS28886, Latvia) had 2 open ports (22, 443) and 29 known CVEs.

Known CVEs on this host

2open ports
0names pointing here
29known CVEs
0known exploited

Open ports and CVEs as of our latest check of this host, 2026-06-08.

CVEs by severity: HIGH 8 MEDIUM 11 LOW 10

A match is an indication, not proof: it is based on the software version a service reported, and fixes are often backported without changing the version. See the list

Network
RETN Limited AS28886
Open ports
22, 443 · at our latest check, 2026-06-08
Location
Riga, LV-RIX · Latvia LV
Route
217.28.48.0/20 · announced by RETN Limited AS28886 RPKI valid
Organisation
RETN Limited
Registry network
OPTRON · 217.28.63.0 - 217.28.63.255 · RIPE
Abuse contact
[email protected] · for OPTRON
First seen
2026-06-08 06:40 UTC
Last seen alive
2026-06-08 06:41 UTC
Hosted domains
No host name points here

Reputation

Not a Tor relay, not a VPN or privacy relay address, and not on a current public blocklist.

Services (2)

22/tcp SSH OpenSSH_10.0 29 CVEs first 2026-06-08 · last 2026-06-08
Server
SSH-2.0-OpenSSH_10.0
Host key
ssh-ed25519 cf98aaf87cdb67e9…
Raw response
SSH-2.0-OpenSSH_10.0
443/tcp TLS first 2026-06-08 · last 2026-06-08
TLS
TLSv1.2
Certificate for
QNAP NAS
Issued by
QNAP NAS
Valid
2016-03-11 → 2026-03-09
Note
self-signed certificate
Raw response
HTTP/1.1 400 Bad Request
Date: Mon, 08 Jun 2026 06:40:55 GMT
Server:  
Strict-Transport-Security: max-age=0
X-Frame-Options: SAMEORIGIN
Content-Security-Policy: script-src 'self' 'unsafe-inline' 'unsafe-eval' ; object-src 'self' ; worker-src 'self' blob:
Content-Length: 362
Connection: close
Content-Type: text/html; charset=iso-8859-1

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>400 Bad Request</title>
</head><body>
<h1>Bad Request</h1>
<p>Your browser sent a request that this server could not understand.<br />
Reason: You're speaking plain HTTP to an SSL-enabled server port.<br />
 Instead use the HTTPS scheme to access this URL, please.<br />
</p>
</body></html>

Vulnerabilities

Port history

Every port that has answered a connection on this address, and when. A port is listed as open above only when a service was identified on it. Times are UTC.