How do I block specific web sites?

How do I remove a block to most web sites?

• After a bout with malware,which put a block on most of my web sites; the block still remains after getting rid of the malware help

• Answer:

  are you talking about the block that google has posed on to your website then you need to go to the webmaster tools of Google and there you had to mail to Google informing them about the removal of the malware and requesting to lift the ban on the sites