How Accurate Is ProxyCheck for Detecting Proxies and VPNs? or Does ProxyCheck Really Block All Proxy

I've been using proxycheck for about 6 months now, and yeah, it’s *good* but not perfect.

Noticed some residential proxies slipping through, especially those rotating IPs.

For better coverage, I paired it with IPQualityScore—kinda fills the gaps.

Site speed? Eh, a tiny hit, but worth it for the extra security.

Anyone else tried combining tools?