Research scan for SNI proxies

This web server is part of a research scan to find SNI proxies on the web. An SNI proxy is a TLS server that proxies traffic to any destination given in the Server Name Indication (SNI).

If you are seeing this page, chances are that one of your TLS servers was contacted by our scan. The scan works by performing a TLS handshake with an SNI of In response, most TLS servers will send default content or an error message. SNI proxies will instead send the server certificates of this web page.

If you have any questions about this scan, or want to be excluded from future scans, contact

David Fifield <>