443/tcp
TLS
first 2026-06-08 · last 2026-06-08
- TLS
- TLSv1.2
- Certificate for
- mail.bkdat.com
- Issued by
- YR1
- Valid
- 2026-05-30 → 2026-08-28
Raw response
HTTP/1.1 400 Bad Request Server: nginx Date: Mon, 08 Jun 2026 00:06:12 GMT Content-Type: text/html Content-Length: 650 Connection: close X-Frame-Options: sameorigin X-Content-Type-Options: nosniff X-XSS-Protection: 1; mode=block X-Download-Options: noopen X-Permitted-Cross-Domain-Policies: none Content-Security-Policy: default-src https: ws: wss: data: 'unsafe-inline' 'unsafe-eval' Referrer-Policy: strict-origin <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 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 disab