Where can I find a good proxy checker?

Question

Computer networks

Good afternoon, ladies and gentlemen. In principle, the subject, please tell me where to find a good http proxy checker that would determine: the level of anonymity, country, ping, the ability to work with https. Which would be multi-threaded and precise. Until today, I used a proxy checker from proxy.org, but it stopped displaying the country correctly.
Thank you.

Answer 1

An excellent proxy checker is available in the ZennoPoster software goo.gl/tZRM2U

Answer 2

incloak.com/proxy-checker have you tried this?

Answer 3

hideme.com