Browsers that do support SNI include: IE7+ (unless running on Windows XP) Firefox 2.0 and later Opera 8.0 and later Chrome 6 and later (unless running on Wi

Browsers that do support SNI include: IE7+ (unless running on Windows XP) Firefox 2.0 and later Opera 8.0 and later Chrome 6 and later (unless running on Windows XP) Safari 3.0 and later Android default browser on Android 3.0 and later (this is probably the biggest chunk of users) Windows Phone 7 So, realistically, you're looking at people who still use Windows XP (unless they're using Firefox) and people with really old Android phones that'll never receive a manufacturer firmware update.