Host
Tags: Expired certificate
As of our latest check on 2026-05-24, 81.91.92.41 (Web4U s.r.o., AS39790, Czechia) had 2 open ports (80, 443) and 2 known CVEs, 1 known to be exploited.
Open ports and CVEs as of our latest check of this host, 2026-05-24.
CVEs by severity: HIGH 1 MEDIUM 1
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 a Tor relay, not a VPN or privacy relay address, and not on a current public blocklist.
HTTP/1.1 404 Not Found
Server: nginx/1.22.1
Date: Sun, 24 May 2026 02:32:13 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Content-Encoding: gzip
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HTTP/1.1 400 Bad Request Server: nginx/1.22.1 Date: Sun, 24 May 2026 02:32:13 GMT Content-Type: text/html Content-Length: 657 Connection: close <html> <head><title>400 The plain HTTP request was sent to HTTPS port</title></head> <body> <center><h1>400 Bad Request</h1></center> <center>The plain HTTP request was sent to HTTPS port</center> <hr><center>nginx/1.22.1</center> </body> </html> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page -->
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.