443/tcp
TLS
first 2026-09-23 · last 2026-09-23
- TLS
- TLSv1.2
- Certificate for
- *.chinaunicom.cn, chinaunicom.cn
- Issued by
- SHECA OV TLS RSA CA A1
- Valid
- 2026-09-03 → 2027-03-20
Raw response
HTTP/1.1 400 Bad Request Date: Wed, 23 Sep 2026 18:23:22 GMT Content-Type: text/html Content-Length: 256 Connection: close <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html> <head><title>400 The plain HTTP request was sent to HTTPS port</title></head> <body bgcolor="white"> <h1>400 Bad Request</h1> <p>The plain HTTP request was sent to HTTPS port.</body> </html>