Backlink information for your site

While searching the internet to find the site where I can find the number of backlinks to my site, I stumbled upon an excellent site where you can exactly know the URL of the sites which are pointing to your sites , I was indeed fascinated by this site, because It exactly gave me the number of backlinks to my site, to whichever blog/sites , I exchanged links I was able to see them. The name of the site is http://www.alltheweb.com/ . Please have a look and input sites URL to find the number of backlinks to your site.