hosts - weakish/cheat GitHub Wiki
Android
On a rooted android device:
su
mount -o rw,remount -t yaffs2 /dev/block/mtdblock3 /system
You may omit -t yaffs2.
After remounting /system to be read/write, edit the file /system/etc/hosts.
Linux
Edit /etc/hosts/.
Windows
Edit C:\WINDOWS\system32\drivers\etc. (Suppose your Windows installed on C:.)