[masomenos]

Unless there are multiple secured domains hosted on that IP address, in which case knowing the domain would be extra information.

[richardwhiuk]

You can't have multiple secure domains on a single host which don't require the user to know a non-standard port without exposing the domain in plain text as part of SNI.

[RKearney]

You can if you have a certificate with multiple domain names in the SAN[0] field.

[0] http://en.wikipedia.org/wiki/SubjectAltName