8443/tcp
TLS
first 2026-09-23 · last 2026-09-23
- TLS
- TLSv1.2
- Certificate for
- *.coocon.co.kr, coocon.co.kr
- Issued by
- Sectigo Public Server Authentication CA DV R36
- Valid
- 2026-03-10 → 2027-03-31
Raw response
HTTP/1.1 400 Bad Request Date: Wed, 23 Sep 2026 14:45:18 GMT Server: Apache Content-Length: 523 Connection: close Content-Type: text/html; charset=iso-8859-1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <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> <p>Additionally, a 400 Bad Request error was encountered while trying to use an ErrorDocument to handle the request.</p> </body></html>