add more networks

[jjhesk]

please added this resourceful website as well.
http://free-proxy.cz/zh/proxylist/country/CN/all/ping/all

[dlebedinsky]

This is a good suggestion. If you want to prioritize security and response speed over country of origin, I think the best implementation is as follows:

1. Get all highly secure (level1) HTTPS proxies on the first page, sorted for by ping. http://free-proxy.cz/en/proxylist/country/all/https/ping/level1. Drop any that have an unacceptably slow speed, or test them for speed yourself.
2. Do the same thing but with level2 secure HTTPS proxies. http://free-proxy.cz/en/proxylist/country/all/https/ping/level2
3. Stack the two tables
   This would result in a table of HTTPS (which is the most useful protocol these days) proxies, with acceptable security levels, and are reasonably fast/responsive. You can then filter that table by country/region if you really want to.