Check Proxy Quality

IP quality score or scamlytics is a good place to start
 
scamalytics, ipqualityscore, ip-score, ip-lookup, etc., can be used as references for various perspectives.
 
Check IPQualityScore to see if it’s flagged, do speedtests to check response time, websites like browserleaks could also be helpful to see if your IP is being masked correctly, AbuseIPDB can also be used to see if the IP is blacklisted.
 
There's two main considerations when checking proxy quality: how well the proxy performs technically and how clean the IPs are that it allows you to use. These are both important and only the combination of the two results in a high quality proxy.

To check proxy technical quality:
Browserleaks.com
Whoer.net
Pixelscan.net
FV.pro

To check IP quality:
Scamalytics.com
IPQualityscore.com

Whilst just a guide, if a proxy reports back clean on all of the above sites it's a good indication of overall proxy quality.
 
Check location, timezone, WebRTC leak, speed, captcha compatibility, and blacklist status - these are the key factors you need to focus on when assessing proxy quality
 
Quality of what? Someone needs to ask not to be on blacklists. Someone so that they would not be banned from a certain service. For some, the purity of the proxy is not important, the main thing is the quantity. Some people want certain countries. You can have many clean and fast proxies, but for example, Vietnam or Brazil, which are less in demand than Europe or the USA.
 
We are adspower, have cooperated with some top proxies with premium residential proxies suppliers, for their excellent Success Rate and Response time as follow:
1. SmartProxy.com: A. Success Rate: 99.68%; Response Time: 0.54s;
2. Brightdata.com A. Success Rate: 98.96%; Response Time: 1.12s;
3. MoMoProxy.com A. Success Rate: 100%; Response Time: 0.51s;
4. oxylabs.io A. Success Rate: 99.82%; Response Time: 0.41s;
ip-success-rate-2.png
 
The best way to check proxy quality is by using tools and performing tests to evaluate its reliability, speed, and trustworthiness. Here’s a step-by-step guide:
1. IP Reputation Check
Use tools like IPQualityScore or FraudGuard to verify if the proxy IP is flagged or blacklisted.
2. Browser Fingerprint Testing
Tools like PixelScan or Whoer.net can help determine if the IP is detected as a proxy or VPN. Look for results indicating a residential or mobile IP with high anonymity.
3. Speed Test
Use services like Speedtest.net to measure latency and download/upload speeds to ensure the proxy doesn’t significantly impact performance.
4. Leak Testing
Run tests for DNS, WebRTC, and IP leaks using tools like IPLeak.net to confirm the proxy protects your actual IP address.
5. Consistency Check
Verify if the proxy maintains a stable connection over time and doesn’t frequently switch IPs (unless it’s a rotating proxy).
6. Target-Specific Testing
If you’re using the proxy for specific platforms (like TikTok, Instagram, or e-commerce), test it directly on those platforms to ensure compatibility and avoid bans.
7. Proxy Type Verification
Use tools to confirm whether the proxy is residential, mobile, or data center. Ensure it matches your needs (e.g., mobile proxies for apps like TikTok).

If you’re looking for a reliable solution, NodeMaven offers high-quality proxies tailored for these use cases, with a free trial to test performance and compatibility.
 
Check ASN, speed, and leaks. Then test the proxy on actual platforms.
 
We are adspower, have cooperated with some top proxies with premium residential proxies suppliers, for their excellent Success Rate and Response time as follow:
1. SmartProxy.com: A. Success Rate: 99.68%; Response Time: 0.54s;
2. Brightdata.com A. Success Rate: 98.96%; Response Time: 1.12s;
3. MoMoProxy.com A. Success Rate: 100%; Response Time: 0.51s;
4. oxylabs.io A. Success Rate: 99.82%; Response Time: 0.41s;
View attachment 401671
I am curious. You've tested against what? What is the criteria you choose to test it or better, what technology you're using that allows you to ?

If I would be a proxy checker, first thing I would say that your DNS is not good, let me recommend you a better supplier. Then I would add your IP to a databases where we are a group of "IP checkers" clique, and we all have the same thing in common, we will say your IP/DNS is not good, here's a better alternative. Bro, common!

So this is what ChatGPT is saying that you can use as 'technologies':
Code:
Criteria to Test Proxy Quality
To determine a proxy’s quality, test the following:

Connectivity (Basic Test)

Does the proxy respond to requests?
Is it reachable or timing out?
Speed & Latency

Measure response time (ping, request-response time).
Compare proxy speed to a direct connection.
Anonymity Level

Transparent Proxy (reveals real IP).
Anonymous Proxy (hides real IP but reveals proxy usage).
Elite Proxy (fully masks real IP).
Geo-location Check

Identify the country and city of the proxy.
Compare advertised location vs actual location.
DNS Leak Test

Ensure the proxy does not leak DNS requests.
Check against known DNS resolvers.
Protocol Support

Does it support HTTP, HTTPS, SOCKS4, SOCKS5?
If HTTPS, is SSL/TLS properly configured?
Reliability & Uptime

Test multiple times to check consistency.
Log failures and timeouts over different intervals.
IP Reputation

Check if the proxy IP is blacklisted (Spamhaus, AbuseIPDB).
Identify if the IP is a data center or residential proxy.
Concurrency & Rate Limits

How many requests can it handle simultaneously?
Does it block or throttle after multiple requests?
Streaming & CAPTCHA Bypass

Can it access services like YouTube, Netflix?
Does it trigger CAPTCHAs on Google, Cloudflare?

adn this is from DeepSeek:

Code:
Speed (Latency):
Measure the time it takes for the proxy to respond to a request.
Use tools like ping or measure the time taken for an HTTP request to complete.

Anonymity Level:
Check if the proxy reveals the user's IP address or identifies itself as a proxy.
Test headers like HTTP_X_FORWARDED_FOR, HTTP_VIA, and REMOTE_ADDR.

Uptime and Reliability:
Test if the proxy is consistently available and functional over time.

Geolocation:
Verify if the proxy is located in the expected country or region using IP geolocation APIs.

Protocol Support:
Test if the proxy supports HTTP, HTTPS, SOCKS4, or SOCKS5 protocols.

Bandwidth and Throughput:
Measure the data transfer speed and capacity of the proxy.

Blacklist Status:
Check if the proxy IP is blacklisted by popular services or websites.

Security:
Ensure the proxy does not inject malicious scripts or modify requests/responses.

Location, really? I don't trust those services 100%!
 
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Some anti-detect browsers do that per proxy you apply, at least a simple check like on Dolphin. There's also sites like Scamalytics and Pixelscans that offer rudimentary connection checks, whether it's IP quality or if you want to see if your connection leaks in some aspect.
 
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