What is a clean proxy?

Have you ever wondered what makes a proxy "clean" or how to ensure that your proxy doesn't land you on a website's blacklist? Clean proxies are an essential component of a seamless online experience for those who access the web through proxies. In this post, we'll delve into the world of clean proxies and explore the factors that determine their quality.

What is a clean proxy?

In simple terms, a clean proxy is one whose IP address is not listed on the blacklist of major proxy detection systems employed by prominent websites and platforms you visit. These detection systems are deployed by internet giants like Google and Cloudflare, who, due to their massive web traffic, possess the data to distinguish and identify irregular proxy behavior. They then provide APIs to share this data with other websites and platforms.


When a website detects a suspicious IP, it may either block traffic from that IP range or display a captcha to reduce server load caused by that proxy traffic.

How to check if your proxy is clean or blacklisted?

You can determine whether  your proxy is blacklisted by using these following methods:

  • Google Search: If you consistently encounter captchas while conducting searches on Google, this is a warning sign that your proxy may be blacklisted by Google.

  • Forum Access: Trying to access forums like blackhatworld.com, which utilize Cloudflare for security measures, can also uncover potential proxy issues. If you are a verified human but still cannot bypass the security check, this is an indication of a problem.

  • Creating new accounts: You can also try creating new accounts on different platforms to see if you run into continuous captcha or your new account got suspended right away. That could be a sign of a blacklisted IP. 
  • IP Checking Websites: There are online tools such as IPFighter, Whoer, f.vision, iphey, etc that allow you to check if your IP is on the blacklist of any detection systems. 

If you can't bypass Google and Cloudflare checks, it's likely that your proxy has problems. However, it is important to recognize that the websites or platforms you are using may not exclusively rely on these specific detection systems. Therefore, it is crucial to conduct your own tests on the proxies to determine if they meet your requirements.

No proxy stays clean forever

Keep in mind that even initially trustworthy proxies can deteriorate over time, especially if subjected to heavy traffic or multiple users. No proxy remains "clean" indefinitely; they tend to perform well initially but might eventually degrade. This is why IPs from places like hotels, cafes, or internet cafes are often not reliable since many people use them.


As you continue to use a proxy, even if your cookies remain valid, accounts linked to IPs that have raised suspicions may face lockouts or repeated login requests. To regain access, you will likely need to change your IP address. For valuable accounts, it's advisable to invest in high-quality proxies from reputable sources, even though they may cost a bit more.


Some proxy providers have ways to refresh IPs (like 911 proxy), although they don't always explain how it works. They might also work with big systems to remove IPs from blacklists.


Proxies from regular homes are usually better than ones from data centers because they're meant for normal people to use.


IPv6 has lots of IP addresses, and big systems often don't pay much attention to it. But some websites, like Gleam, Etsy, and eBay, don't work with IPv6, so using these proxies might not work there.


In conclusion, the importance of clean proxies cannot be overstated. A thorough comprehension of the factors influencing their quality equips you with the knowledge to elevate your proxy usage with greater proficiency.


If you're interested in learning more about selecting a dependable proxy service, you can refer to our previous blog posts.

Read more
ISP proxies are the best type of proxy for your account!
What is the best proxy for Antidetect Browsers?