1.simply go here http://checkerproxy.net/
2.copy and paste your scraped proxy list or get a free proxylist on the site I just mentioned , choose your proxy type, check on "do not save or publish my proxies", and click "check list" after.( only 1000 at a time )
3. wait until list is done checking
4. scroll down to list of working proxies
5. use the sorter to sort them out into any type of proxy you were looking for and also only the elite/anonymous ones (:
6. done use those proxies for cracking!