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Last updated: 07/06/2018
Server Name Indication is an extension of the TLS protocol that allows one to host multiple SSL certificates at the same IP address. Nowadays it is pretty common and implemented in most modern browsers, but older versions may lack SNI support! In-depth info on Server Name Indication internals to be found on the « What is Server Name Indication? » page.
Internet Explorer 7 starting with Windows Vista (not XP!)
Mozilla Firefox 2.0+
Opera 8.0+ (TLS protocol support must be enabled)
Android browser on Android 3.0+
Mobile Safari on iOS 4.0+
Windows Phone 7+
Opera Mobile 10.1+ on Android
Internet Explorer, all versions, on Windows XP
Android browser on Android 1.x and 2.x