The Funny Truth About Proxies - What I did wrong?

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I recently bought some static ISP residential proxies. I ran them through IPQualityScore and a few other tools. They all showed up as clean. No flags, no signs of proxy usage, no datacenter labels — just fresh, legit-looking IPs.


Feeling confident, I used one of those “clean” proxies to sign up for an account on IPQualityScore’s own website because I just run out of free credits, I need to check more. I use anti-detect browsers for sure, all green pass on iphey.com of course


And here's the punchline: they blocked the registration, saying I needed to disable my proxy.


Wait... what?


I double-checked everything. The IP still looked clean on all the major checkers, and it was supposedly residential. But the site clearly knew I was behind a proxy — even though all public indicators said otherwise.

What did I do wrong?? What can I do completely anonymous with google, X,...
 
Enable your paranoia and you will come up with a fresh idea - these checkers are de facto honeypots and they dumped your IP.
It worths thinking - normal people NEVER visit no kinds of IP checkers before browsing.
Yes , then how would I check quality proxy ?
 
Yes , then how would I check quality proxy ?

Check if the IP is on any blacklists but IP quality score largely means nothing and is very likely a honey pot meaning, if someone checks an IP through the website it is likely a proxy.

I don't know how IP quality scores became gospel but it's annoying lol
 
Check if the IP is on any blacklists but IP quality score largely means nothing and is very likely a honey pot meaning, if someone checks an IP through the website it is likely a proxy.

I don't know how IP quality scores became gospel but it's annoying lol
okay but how do I check blacklist if I dont use IPquality or sites like this
 
It seems like the website you tried to sign up for is using advanced detection methods to identify proxies, even if they appear clean on public checkers. Sometimes, certain websites have more sophisticated ways to detect proxies that may not be visible on standard tools. You can try rotating your proxies or using different ones to see if that helps you get past the detection. Additionally, make sure your anti-detect browsers are set up correctly and that you're not leaking any identifying information that could be giving away the fact that you're using a proxy.
 
I gave up manual testing. I usually test directly with a fingerprint browser( MultiLoginPro), it can catch 90% of bad proxies before I risk my accounts. Plus, this makes no more copy-pasting proxies into different validators.️♂️
multilogin has their own proxy tester ?
 
The target website employs advanced detection systems. The only solution in this case is to try a different proxy.
 
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