Host
As of our latest check on 2026-05-25, 83.240.30.200 (O2 Czech Republic, a.s., AS31246, Czechia) had 1 open port (80) and 4 known CVEs.
Open ports and CVEs as of our latest check of this host, 2026-05-25.
CVEs by severity: CRITICAL 1 HIGH 1 MEDIUM 2
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/1.1 401 Unauthorized Date: Tue, 28 Oct 2014 19:28:01 GMT Server: Boa/0.94.14rc21 Accept-Ranges: bytes Content-encoding: gzip Connection: close WWW-Authenticate: Basic realm="WF2411" user" Content-Type: text/html; charset=ISO-8859-1 <HTML><HEAD><TITLE>401 Unauthorized</TITLE></HEAD> <BODY><H1>401 Unauthorized</H1> Your client does not have permission to get URL /welcome.htm from this server. </BODY></HTML>
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.