443/tcp
TLS
first 2026-06-08 · last 2026-06-09
- TLS
- TLSv1.2
- Certificate for
- portal.die-steuer-berater.de
- Issued by
- R12
- Valid
- 2026-04-24 → 2026-07-23
Raw response
HTTP/1.1 400 Bad Request Server: nginx Date: Tue, 09 Jun 2026 00:19:27 GMT Content-Type: text/html; charset=utf-8 Content-Length: 650 Connection: close Referrer-Policy: same-origin X-XSS-Protection: 1; mode=block Strict-Transport-Security: max-age=63244800; includeSubDomains; preload Content-Security-Policy: default-src 'none'; script-src 'unsafe-inline' 'unsafe-eval' 'self' https://da7xgjtj801h2.cloudfront.net https://stackpath.bootstrapcdn.com https://ajax.aspnetcdn.com https://kendo.cdn.telerik.com; img-src 'self' https://da7xgjtj801h2.cloudfront.net; style-src 'unsafe-inline' 'self'; font-src data: 'self'; form-action 'self'; connect-src 'self'; <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</center> </body> </html> <!-- a padding to disable MSIE and Chrome friendly