Block/Unblock sites without software

You can block or even unblock sites without any software. Just follow these steps and you can continue acessing the file.
Go to Start >>> RUN .
Type C:\WINDOWS\system32\drivers\etc
Open the file "HOSTS" in a notepad
Under "127.0.0.1 localhost" . Add IP NameIP - IP of the site to be blockedName - Name of the site (see the pic below for example Example :127.0.0.1 localhost210.210.19.82 www.sifymall.comSifymall is now unaccessable . For every site after that you want block , just add "1" to the last number in the internal ip (127.0.0.2) and then the add like before.