TopProxyLab Methodology: How We Review & Rate Proxy Services

Last updated: February 2026

Rankings on TopProxyLab are not random numbers. They are the result of a rigorous process: we buy every proxy service with our own money, run it through standardized technical tests, and publish the results. No provider pays for placement. No free accounts are accepted. This page explains exactly how we do it.

The Rating Formula

Every service receives a final score from 0 to 5, calculated using a hybrid model:

R = (E x 80%) + (U x 20%)

R – Final Service Rating | E – Expert Assessment (our technical tests) | U – User Rating (community feedback from verified reviews on our site).

Expert Assessment: What We Test (80% of the score)

We manually verify each provider against 5 key parameters. We purchase proxy plans as a regular customer (“mystery shopper” approach), run automated test scripts, and cross-check provider claims against real performance data.

1. Speed and Latency (weight: 25%)

We measure response time (latency in ms) and download throughput (Mbps) by sending 500-1000 sequential requests through each proxy to a controlled target server. Tests run from two locations: a EU server (Germany) and a US server (Virginia). We record minimum, average, median, and P95 latency. Uptime is monitored over a 24-hour period with requests every 60 seconds. Any proxy that drops below 95% uptime or exceeds 3000ms average latency receives a penalty.

Tools used: custom curl-based bash script, Speedtest.net, Fast.com.

2. Anonymity and Leak Detection (weight: 25%)

Every proxy is checked for DNS leaks, WebRTC leaks, and HTTP header leaks. We verify whether the proxy is detected as a proxy, VPN, or datacenter IP by third-party scanners. We also check the Fraud Score, which indicates how likely the IP is to be associated with fraudulent activity. Clean residential IPs typically score 0-15; datacenter IPs often score 30-100.

Tools used: Scamalytics (Fraud Score), Spamhaus (blacklist check), whoer.net (anonymity and disguise level), iphey.com (fingerprint and fraud analysis), pixelscan.net (proxy detection and browser fingerprint), ipleak.net (DNS/WebRTC leak test), ip2location.com (IP type classification: ISP, DCH, residential).

3. IP Pool Quality and Coverage (weight: 20%)

We evaluate the actual size of the IP pool (not just the number claimed by the provider), the number of available GEO locations, and subnet diversity. We request 100-500 rotating IPs and check how many unique /24 subnets they cover. A larger number of subnets means less risk of mass bans. We also verify that the GEOs advertised by the provider match the real location reported by ip2location.com.

Tools used: ip2location.com, MaxMind GeoIP2, custom Python script for subnet analysis.

4. Pricing and Value (weight: 15%)

We compare the price per GB (residential/mobile) or price per IP (datacenter/ISP) against the quality of service delivered. We check the availability of short-term plans (1-3 days), pay-as-you-go models, free trials, and the refund policy. A provider that charges $8/GB but delivers Fraud Score 0 and 95% success rate may score higher than a provider at $3/GB with Fraud Score 40 and 78% success rate.

5. Customer Support (weight: 15%)

We contact support as a new customer with a basic question (“I need proxies for web scraping, which plan do you recommend?”) and a technical question (“My proxy shows a DNS leak, can you help?”). We measure first response time, whether we reach a human or a bot, and the technical accuracy of the response. Providers with 24/7 live chat and sub-5-minute human response times score highest.

Testing Environment

All tests are conducted from two dedicated VPS servers to ensure consistent and reproducible results:

Browser-based tests (whoer.net, pixelscan.net, iphey.com) are conducted manually using a clean Chrome profile or via Dolphin{anty} anti-detect browser with default fingerprint settings.

Testing Process in Practice

Step 1: Purchase

We register on the provider’s website as a regular customer using a personal email and pay with our own card. No promo codes from the provider, no special deals. The goal is to get the same experience as any new user. Below is an example of a standard order confirmation:

Step 2: Terminal Testing

Once we receive proxy credentials, we connect to our test VPS via SSH and run the curl-based latency script. A typical test session sends 500-1000 requests through the proxy and logs response time, HTTP status code, and the returned IP for each request. Here is what a live test session looks like:

Step 3: Fraud Score and Blacklist Check

We take 5-10 IPs from the provider’s pool and check each one on Scamalytics and Spamhaus. We record the Fraud Score (0-100) and whether the IP appears on any blacklist. These screenshots go directly into the review:

Step 4: Browser-Based Verification

We open a clean Dolphin{anty} profile with default fingerprint settings and visit whoer.net, iphey.com, and pixelscan.net through the proxy. This checks for DNS leaks, WebRTC leaks, and whether the IP is detected as a proxy or datacenter address:

Step 5: Scraping Success Rate

We run 1000 requests to Google Search and Amazon product pages through the proxy and count successful responses (HTTP 200). The success rate is calculated as a percentage. Anything below 80% is a red flag for scraping use cases:

Sample Raw Output

Here is an example of what our raw CSV test log looks like for a single provider:

request_id,timestamp,proxy_ip,latency_ms,http_status,target
001,2026-02-20T10:00:01,131.108.17.24,570,200,google.com
002,2026-02-20T10:00:02,131.108.17.24,570,200,google.com
003,2026-02-20T10:00:03,131.108.17.24,564,200,google.com
004,2026-02-20T10:00:04,131.108.17.24,558,200,google.com
005,2026-02-20T10:00:05,131.108.17.24,572,200,google.com
006,2026-02-20T10:00:06,131.108.17.24,561,200,google.com
007,2026-02-20T10:00:07,131.108.17.24,569,200,google.com
008,2026-02-20T10:00:08,131.108.17.24,555,200,google.com
009,2026-02-20T10:00:09,131.108.17.24,573,200,google.com
010,2026-02-20T10:00:10,131.108.17.24,566,200,google.com

Full CSV exports are available upon request at editor@toproxylab.com.

Metrics We Record for Every Provider

User Rating: How Community Feedback Works (20% of the score)

20% of each provider’s score comes from verified user reviews submitted on our website. We calculate the average score from all approved reviews.

Review Moderation

Every review undergoes manual moderation. We reject reviews that are submitted via temporary email addresses or proxy/VPN IP addresses, contain text copied from other websites, include baseless accusations or spam links, or appear to be paid advertisements. We understand that competitors may attempt to sabotage each other and providers may try to boost their own scores. Our moderation process is designed to prevent both.

Raw Test Data

We believe in full transparency. Each review on TopProxyLab includes specific test results: speed measurements, Fraud Scores, blacklist counts, and screenshots from third-party verification tools. Here is a summary of what we publish in every review:

If you need access to raw test logs (CSV exports, full curl output, complete Scamalytics/Spamhaus screenshots) for any specific provider review, contact us at editor@toproxylab.com. We provide raw data upon request for fact-checking, research, or journalistic purposes.

Update Schedule

Proxy services change constantly: providers update their infrastructure, adjust pricing, and expand or shrink their IP pools. To keep our data relevant, we follow this update schedule:

The “Updated” date at the top of each review reflects the last time we verified or re-tested the provider’s data.

Independence and Disclosure

TopProxyLab earns revenue through affiliate commissions. This does not influence our rankings or scores. A provider with a generous affiliate program but poor test results will rank below a provider with no affiliate program but strong performance. Full details are available in our Affiliate Disclosure.

All testing is conducted by Max K., founder and lead reviewer of TopProxyLab. Questions about our methodology? Contact editor@toproxylab.com.