After hours trading

["Liu,Marshall,GLENkkkk,Finance" <marshall.liu@xxxxxxxxxxxxx>]

This is my first time submitting to this post and this question may have
been answered already so bear with me.

Is it possible for an individual to trade after hours ?

If so where for:

 1) Stock equity on all exchanges
 2) Stock options
 3) Major indices (i.e. SPX, OEX, etc...)
 
Please provide the name, phone number and website if available.

Thanks in advance.

Marshall