[whitemask]

i want source code vb.net to grab proxy and check if this proxy is working or avilabe , can any one help me ?

[iFeelLiFe]

you would not get a random proxy grabber.
the proxy grabber need to grab proxyes from an site.
So just code it by yourself, Good luck :D

[frawg]

You could check this out mate:
https://hackforums.net/showthread.php?tid=4215874
I don't know how you would check if they are working though bud