Looks like you have not so good router. He can't loop the request back to in to your computer.
You can use the method jwpatser told you. That is the only way to see the website for you.
Well it isn't the only way, you can edit your hosts file, and add a new line :
127.0.0.1 intenserose.no-ip.org
All it does is mapping that address to that IP.
You can find the file in c:/Windows/System32/drivers/etc.
You can open it with any text editor, and make sure you have full administrator rights to edit this file.
It will not affect any other website or IP or whatever on your computer.