Ping the site and use the IP to access it.
Example:
Veoh.com: http://8.3.211.49/
Youtube.com: http://208.65.153.253/
4chan.org (I don't know if this one would work since the boards are hosted on different sub domains): http://66.207.165.166/
/b/ @ 4chan: http://66.207.165.181/b/imgboard.html
DON'T CLICK THE LINK TO /B/ IF YOU DON'T KNOW WHAT /B/ IS! xD
