proxycheck.io is a site which provides an easy to query, accurate and reliable API for the purposes of proxy blocking.
Signup for free with your email address below and receive 1,000 free queries per day and full access to all our features.
Query packages above 1,000 can be purchased from the dashboard by signed up users.
You can try our API (with or without an API key) within your web browser on our web interface page.
Please note the TLS url will give results slower due to the extra time it takes to setup an encrypted connection.