Host
Tags: Self-signed certificate Expired certificate End-of-life software
As of our latest check on 2026-08-09, 81.177.3.63 (JSC RTComm.RU, AS8342, Russia) had 4 open ports (21, 25, 80, 443) and 87 known CVEs, 2 known to be exploited.
Open ports and CVEs as of our latest check of this host, 2026-08-09.
CVEs by severity: CRITICAL 17 HIGH 45 MEDIUM 22 LOW 3
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
Not counted: 2 only affect a particular platform; this host's is not known (nginx 1.0.0). See them
Not a Tor relay, not a VPN or privacy relay address, and not on a current public blocklist.
220 ProFTPD 1.3.3e Server ready. 500 GET not understood 500 HOST: not understood 500 ACCEPT: not understood 500 ACCEPT-ENCODING: not understood 500 USER-AGENT: not understood 500 Invalid command: try being more creative
554 SMTP synchronization error
HTTP/1.1 200 OK Server: nginx/1.0.0 Date: Sun, 09 Aug 2026 14:16:06 GMT Content-Type: text/html Connection: keep-alive Last-Modified: Mon, 02 May 2011 15:09:05 GMT ETag: "18c2444-2c-4a24c6787a640" Accept-Ranges: bytes Vary: Accept-Encoding,User-Agent Content-Encoding: gzip Content-Length: 61 ���(�ͱs,HL�HU�,VH+�K.�����KW��/�M�ɩ��+��j,
<!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 /> <blockquote>Hint: <a href="https://www.example.com/"><b>https://www.example.com/</b></a></blockquote></p> <p>Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.</p> <hr> <address>Apache/2 Server at www.example.com Port 443</address> </body></html>
These CVEs only apply when the software runs on a particular platform (for example Windows), and this host's platform is not known. They are not counted.
CVEs by severity: HIGH 1 MEDIUM 1
| CVE | Software |
|---|---|
| CVE-2016-1247 HIGH 7.8 | nginx 1.0.0 · port 80 |
| CVE-2011-4963 MEDIUM 5.0 | nginx 1.0.0 · port 80 |
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.