Proxy Checkers 2025: Ranking of Tools for Testing Proxy Pool Liveness and Quality

Introduction: Why You Even Need a Proxy Checker

Any proxy pool degrades over time. Addresses drop out of rotation, some IPs end up on blacklists, latency grows on certain nodes, and geolocation unexpectedly changes. If you use mobile proxies for ad accounts, scraping, or multi-accounting, each of these problems turns into concrete losses: a banned account, wasted budget, or a failed data collection run. That's why a proxy checker long ago stopped being a toy for enthusiasts and became an essential part of the workflow.

This article is dedicated to third-party testing tools: online services, desktop apps, console utilities, and IP reputation services. We deliberately don't cover built-in checks inside антидетект browsers and don't touch on configuring proxies in specific programs, because there are already separate articles about that on the blog. Here there's only one question: what to use to verify that your pool is alive and fit for work.

Who needs this? Marketers and SMM specialists managing dozens of accounts. Media buyers, for whom proxy stability directly affects how long ad accounts survive. Developers embedding checks into their pipelines. Business owners who buy proxies from multiple providers and want to objectively compare quality.

When compiling this ranking, we considered six parameters: features, price, support for different proxy types, limits, usability, and quality of tech support. Looking ahead: first place went to A-Parser as the most flexible tool for professionals, second — the free desktop ZennoProxyChecker, third — the online checker hidemy.name for its balance of simplicity and informativeness. Data is current as of Q1 2025.

Methodology for Compiling the Proxy Checker Ranking

We selected nine tools that are actually used in Russian-speaking and international communities for proxy testing. The selection includes different classes of solutions, because the task of "checking a pool" looks different for a marketer and a developer. Some want to paste a list into a browser and see the result a minute later; others need a utility in CI/CD with JSON output.

The weighting of criteria was distributed as follows:

• Features — 25%. What exactly the tool can check: availability, type, anonymity level, speed, geolocation, and functionality with a target website.
• Proxy type support — 15%. HTTP, HTTPS, SOCKS4, SOCKS5, login/password authorization, IPv6.
• Limits — 15%. List size, number of threads, restrictions on run frequency.
• Price — 15%. Cost of license or subscription relative to capabilities.
• Usability — 15%. Learning curve, interface, result export, documentation.
• Quality of support and community — 15%. Response speed, presence of a forum, documentation, update activity.

We collected information from official websites and documentation, from niche forums, GitHub discussions, reviews in specialized communities, and our own testing on a mixed pool of mobile, residential, and server proxies. Each tool was run on the same list of several hundred addresses to compare speed and completeness of results.

What we didn't consider. We didn't evaluate the quality of proxies sold by some of these services — only their checkers. We didn't factor in marketing claims unconfirmed in documentation. We didn't compare tools by website design. Scores reflect the average across criteria weighted and rounded to one decimal place. Prices can change, so double-check them on the official pages before buying.

Criteria for Choosing and Comparing Proxy Checkers

Checking Features

The bare minimum is an answer to the question "is the proxy alive." But that's not enough for work tasks. A good proxy checker determines the protocol, anonymity level (transparent, anonymous, elite), measures response time, and shows the country and city of the exit IP. Advanced tools can check the availability of a specific target website through a proxy, which is critical for media buyers: a proxy can be alive, but a specific ad network or marketplace may already be serving it a captcha or a 403 error. We tested each point in practice.

Proxy Type and Authorization Support

Mobile proxies are almost always issued with login/password authorization, sometimes with IP binding. A tool that doesn't understand the ip:port:login:password format is useless for our audience. SOCKS5 support is also important, because many scraping and messenger-related scenarios use exactly that. Checkers that correctly work with IPv6 got bonus points.

Limits

Online checkers usually limit the list size per run and the number of concurrent threads. For a pool of 20 addresses, this doesn't matter; for a pool of 5,000, it's the deciding factor. We recorded claimed and actual limits, as well as how the service behaves when they're exceeded.

Price

The range is huge: from fully free open-source utilities to licenses costing several hundred dollars. We evaluated not the absolute cost but the ratio of price to capabilities received. A free tool with limited functionality could get either a 10 or a 6 depending on what it delivers for those zero dollars.

Usability

How many steps from installation to the first result. Whether there's a clear export in the needed format. How readable the reports are. Whether repeat checks can be automated. We also looked at localization: part of the audience prefers a Russian-language interface.

Support and Community

For commercial products, we evaluated support response speed and documentation completeness. For open-source projects — repository activity, issue closure speed, availability of examples. A tool that hasn't been updated in three years lost points even with good functionality, because proxy protocols and detection methods change.

Threshold Values

The main ranking included tools that: support bulk list checking, work with login/password authorization, were updated or maintained in 2024–2025, and have a confirmed user base. Tools that check only one IP at a time are placed in the alternatives section.

#1. A-Parser — Best Proxy Checker for Professionals and Teams

General Information

A-Parser is a multi-threaded parser combine developed since 2011 by a team from the Russian-speaking segment. The product targets SEO specialists, media buyers, and developers who need to collect large volumes of data. Proxy checking here isn't a separate program but a built-in ProxyChecker module tightly integrated with the entire system: checking results immediately flow into working pools used by other parsers.

Key Features

• Multi-threaded checking of lists of any size, with thread count limited only by machine resources.
• Automatic proxy type detection: HTTP, HTTPS, SOCKS4, SOCKS5.
• Support for login/password authorization, loading lists by URL with automatic updates.
• Checking against an arbitrary target URL with a configurable success condition — you can verify the availability of a specific site or API.
• Flexible scheduler: rechecking every N minutes, automatic exclusion of dead addresses.
• Distributing working proxies through a built-in local server, allowing external programs to connect to a live pool.
• API for managing tasks and exporting results to JSON, CSV, TXT.

The unique feature is the checker's linkage with other modules. You check the pool once, and all scraping tasks automatically use only working addresses. This is especially convenient for mobile proxies with rotation: you can set rechecks every few minutes and track how the exit IP changes.

Plans and Pricing

Licenses are perpetual and paid once. Lite costs about $179, Pro about $279, Enterprise about $479. Differences relate to the number of concurrent tasks, API access, and some parsers. There's no free tier, but there's a limited demo version and an active forum where you can ask questions before buying. Update terms depend on the license; check before paying. If you only need a proxy checker, the purchase is overkill. If you already scrape data, the module comes practically for free.

Pros

• The most flexible tool reviewed: any checking conditions, any target sites, any output formats.
• Performance: hundreds of thousands of addresses in reasonable time on an ordinary server.
• Automation out of the box: scheduler, auto-updating lists, local proxy server.
• Russian-language documentation and an active forum with fast developer responses.
• Regular updates; the product has been evolving for over a decade without long pauses.
• One-time payment instead of a subscription.

Cons

• Steep learning curve: the interface is packed with settings, and a beginner will need time to master it.
• The price is unjustified if you only need proxy checking without scraping.
• Windows and Linux only; no native macOS version.
• No cloud version — everything runs on your machine or server.

Who It's For

The ideal user is a team of media buyers or a developer managing a pool of thousands of proxies and already using A-Parser for data collection. A typical scenario: a pool of mobile and residential proxies from multiple providers, hourly rechecks, and automatic export of live addresses to external scripts. For a solo marketer with twenty proxies, this is overkill.

Best choice for: professional teams that need automated checking of large pools with custom conditions.

Main advantage: proxy checking is integrated into the data collection workflow rather than existing separately.

Overall score: 8.7/10

• Features: 10/10
• Price: 6/10
• Usability: 7/10
• Tech support: 9/10
• User reviews: 9/10

#2. ZennoProxyChecker — Best Free Desktop Proxy Checker

General Information

ZennoProxyChecker was developed by ZennoLab, known for the ZennoPoster automation platform. The program appeared in the early 2010s as a paid product and later became free for registered users. It's a classic desktop checker for Windows, tailored for bulk checking and subsequent distribution of working addresses to other applications.

Key Features

• Checking lists across hundreds and thousands of threads with automatic proxy type detection.
• List sources: files, URLs, FTP — with a configurable auto-update interval.
• Detection of anonymity level, country, and response time.
• Checking by custom rules: availability of a given URL, presence of a string in the response.
• Built-in proxy server that distributes live addresses to external programs via a local port with rotation.
• Export by filters: only elite, only SOCKS5, only a specific country.
• Recheck schedule and removal of addresses after a given number of failures.

The local port distribution feature is the main highlight. You point any program to 127.0.0.1 and a port, and ZennoProxyChecker substitutes a live proxy from the pool. For those working with ZennoPoster, integration is native.

Plans and Pricing

At the time of writing, the program is free: just register on the ZennoLab website. There are no paid features inside. Given that a similar feature set from competitors costs dozens of dollars, the price-to-quality ratio here is one of the best in the ranking.

Pros

• A completely free tool with commercial-grade functionality.
• High speed: thousands of threads on an average laptop.
• Flexible checking rules, including work with specific target sites.
• Automation: scheduling, auto-updating lists, auto-cleaning.
• Russian-language interface and documentation, and a large community on the ZennoLab forum.
• Pool distribution via a local proxy server without third-party utilities.

Cons

• Windows only; macOS and Linux users will need a virtual machine.
• The interface looks dated, and updates are infrequent — the product is more in maintenance mode than active development.
• Requires registration in the ZennoLab ecosystem, which isn't convenient for everyone.
• No API for integration into custom scripts, only file exchange.

Who It's For

Marketers and media buyers on Windows who want a serious proxy checker for free. Well-suited to owners of small teams where several people share a common pool: the program runs on one machine and distributes working addresses. Less convenient for developers due to the lack of an API.

Best choice for: Windows users who need bulk automated checking with no software budget.

Main advantage: paid-checker functionality at zero cost.

Overall score: 8.5/10

• Features: 9/10
• Price: 10/10
• Usability: 7/10
• Tech support: 7/10
• User reviews: 8/10

#3. hidemy.name Proxy Checker — Best Online Tool for Quick Checks

General Information

hidemy.name is a service operating since 2006, primarily known as a source of free public proxy lists. Its online proxy checker is one of the oldest and most recognizable in the Russian-speaking internet. The tool requires no installation: paste a list into the form, click a button, get a results table.

Key Features

• Bulk checking of address lists in ip:port format, supporting HTTP, HTTPS, SOCKS4, SOCKS5.
• Detection of proxy type, anonymity level, country and city, response time.
• Filtering results by type, country, speed, and anonymity.
• Export of working addresses to a text list.
• Russian and English interfaces.

We should separately note its clarity: results are displayed in a table with color coding, and filters let you select the needed subgroup in a couple of clicks. By comparison, many online checkers just output a wall of text.

Plans and Pricing

The online checker is free. Limits relate to list size per run and run frequency — the service protects itself from automated loads. The exact limits aren't published, and they change periodically; in practice, lists of several hundred addresses are checked without issues. There are no paid tiers specifically for the checker.

Pros

• No installation or registration required, works from any browser.
• A clear table with filters — convenient for quick visual auditing of a pool.
• Full support for all major protocols.
• Stability: the service has been running for nearly twenty years without long outages.
• A Russian-speaking audience and interface without a language barrier.

Cons

• Support for login/password authorization is limited — the online form often isn't suitable for private mobile proxies with auth.
• No target URL checks: you'll know a proxy is alive, but not whether it works with the site you need.
• No automation or API; each check is launched manually.
• Opaque limits that can unexpectedly change.

Who It's For

Beginners and marketers who need a quick daily glance at a pool of a few dozen addresses. Convenient for checking lists before loading them into an antidetect browser or parser. Not enough for media buying teams with large pools and authorized proxies.

Best choice for: quick manual checks of small lists without installing software.

Main advantage: the simplest path from a list to a clear results table.

Overall score: 8.2/10

• Features: 7/10
• Price: 10/10
• Usability: 10/10
• Tech support: 7/10
• User reviews: 8/10

#4. proxy-scraper-checker — Best Open-Source Proxy Checker for Developers

General Information

proxy-scraper-checker is an open-source Python utility distributed under the MIT license on GitHub. The project has been actively developed since 2021, regularly receives updates, and has gathered several thousand stars. It's not a service nor a program with buttons, but a console tool that you run yourself and embed into your processes.

Key Features

• Asynchronous checking of HTTP, SOCKS4, and SOCKS5 with configurable concurrent connection count.
• Checking through an arbitrary target URL specified in the configuration.
• Geolocation detection via a built-in database, output of country, region, city.
• Response time measurement, sorting by speed.
• Output to TXT and JSON, breakout by protocol and anonymity level.
• A public-list scraping module that can be disabled if you want to check only your own pool.
• A ready-made Docker image for server deployment.

The unique advantage is transparency. You see all the code, can change the checking logic, add your own checks for header leaks, or integrate output into a Telegram bot. For mobile proxies with rotation, it's easy to write a wrapper that runs a check every five minutes and logs IP changes.

Plans and Pricing

Completely free. Costs are only your setup time and server resources if you run it in the cloud. In terms of price-to-capability ratio, this is the leader of the ranking, with a caveat: the price is paid in your skill.

Pros

• Open code, any modifications for your needs.
• Active development: updates come regularly, issues close quickly.
• Cross-platform: Windows, macOS, Linux, Docker.
• Checking against a target URL, which most online checkers lack.
• JSON output that's easy to parse and pass down the pipeline.
• High speed thanks to its asynchronous architecture.

Cons

• No graphical interface; requires basic command-line and Python knowledge.
• Login/password authorization support is implemented through URL format, which isn't always obvious to beginners.
• No official support, only GitHub issues and documentation.
• No scheduler out of the box — automation must be set up via cron or system tasks.

Who It's For

Developers and technically savvy media buyers who want to embed proxy checking into their own infrastructure. A typical scenario: a server with a cron job that every ten minutes checks the pool, writes results to a database, and sends a notification when the share of live addresses drops below a threshold. For a marketer without a technical background, the tool isn't suitable.

Best choice for: developers who need an embeddable and modifiable check.

Main advantage: full control over checking logic and zero cost.

Overall score: 8.0/10

• Features: 8/10
• Price: 10/10
• Usability: 5/10
• Tech support: 7/10
• User reviews: 8/10

#5. GSA Proxy Scraper — Proxy Checker with Scheduler and Built-in Server

General Information

GSA Proxy Scraper is a product of the German company GSA Software, known for SEO automation tools. The program has existed for over a decade, runs on Windows, and combines public proxy scraping with a powerful checking module. Despite the name, the checker here is fully featured and suitable for checking your own private lists.

Key Features

• Multi-threaded checking with configurable thread counts and timeouts.
• Tests: availability, type, anonymity, speed, country.
• Custom URL tests — you set the site and expected response, and the program checks the proxy against exactly that.
• A scheduler with automatic repeat checks and result export by schedule.
• Built-in proxy server to distribute live addresses to other programs with rotation.
• Export to TXT, CSV, XML, sending lists via FTP or email.
• Tags and groups for organizing a pool by provider or task.

An interesting feature is custom tests, where you can set several target sites at once and get a matrix: which proxy works with which site. For a media buyer running campaigns on several platforms, this saves hours of manual checking.

Plans and Pricing

A one-time license costs around €79–99 depending on promotions; there's no subscription. A free five-day trial with full functionality is available. The license is bound to one user, but updates are included. Price-wise, this is the middle of the ranking: more expensive than free alternatives, significantly cheaper than A-Parser.

Pros

• Custom tests against several target sites at once.
• Scheduler and auto-export let you fully automate pool monitoring.
• Built-in server for distributing proxies to external applications.
• One-time payment and included updates.
• Responsive support via tickets and forum; the developer responds personally.
• Stable performance on large lists — tens of thousands of addresses.

Cons

• Windows only, no native support for other systems.
• The interface is overloaded and not translated into Russian.
• The main focus is on public proxies — some features are redundant for private pool owners.
• No API; integration only via files and the local server.

Who It's For

Media buyers and SEO specialists on Windows who work with several platforms and want to see which proxies are compatible with which sites. Optimal for small and medium businesses where one person is responsible for proxy infrastructure. The learning curve will be steep for beginners due to the English interface and abundance of settings.

Best choice for: those who need a compatibility matrix of proxies with multiple target sites.

Main advantage: custom tests and full scheduled automation for a one-time fee.

Overall score: 7.8/10

• Features: 9/10
• Price: 7/10
• Usability: 6/10
• Tech support: 8/10
• User reviews: 8/10

#6. ProxyScrape Proxy Checker — Online Proxy Checker with API

General Information

ProxyScrape is an international service operating since 2018, offering both free proxy lists and paid residential and server proxies. Its online checker is free for everyone and stands out among web tools for having a documented API, which is rare for this class.

Key Features

• Bulk checking of HTTP, SOCKS4, SOCKS5 through a web form.
• Detection of type, anonymity, country, response time.
• API for programmatic list checking and retrieving JSON results.
• Configurable timeout and protocol selection before checking.
• One-click export of working addresses.

The API is the main differentiator from hidemy.name and checkerproxy.net. You can send a list from a script and get a structured response without standing up your own checking infrastructure. For small pipelines, this is a convenient compromise between an online checker and a console utility.

Plans and Pricing

The checker is free, including basic API access. Limits relate to addresses per request and call frequency; for intensive use, the service suggests contacting them. Paid tiers relate to proxy sales, not the checker, so we don't evaluate them here.

Pros

• A free API — rare among online checkers.
• No installation required, works in a browser.
• English documentation is clearly written, with request examples.
• Fast checking of medium lists; results appear within tens of seconds.
• Support for all major protocols.

Cons

• No Russian-language interface.
• Login/password authorization support in the web form is limited; checking private proxies is inconvenient.
• No target URL checks.
• API limits aren't always transparent and can change without notice.
• Support responds slower than paid products — the service focuses on clients buying proxies.

Who It's For

Developers and marketers with basic technical skills who want to automate checks without installing their own tools. Convenient for checking lists before loading them into a parser. For large private pools with authorization, better to look at desktop or console solutions.

Best choice for: lightweight check automation via API without your own infrastructure.

Main advantage: programmatic access to a free online checker.

Overall score: 7.6/10

• Features: 7/10
• Price: 10/10
• Usability: 8/10
• Tech support: 6/10
• User reviews: 7/10

#7. checkerproxy.net — Bulk Online Proxy Checker for Large Lists

General Information

checkerproxy.net is a highly specialized online service that does one thing: checks large proxy lists. It appeared in the mid-2010s, has Russian-speaking roots, and is popular among those working with public and semi-private pools. The interface is austere, but the limits on list size are noticeably more generous than most web checkers.

Key Features

• Checking lists of several thousand addresses per run.
• Detection of proxy type, anonymity level, country, response time.
• Archive of previous checks with the ability to revisit results.
• List statistics: share of live addresses, distribution by country and type.
• Export of working addresses to text with format choice.

The check archive is a useful detail. You can compare the state of your pool today and a week ago without saving results manually. For assessing pool degradation from a specific provider, it works as simple monitoring.

Plans and Pricing

The service is free. No registration required. Limits are on run frequency from a single IP and total checks per day; exact values aren't published. There's no paid version.

Pros

• Some of the most generous list-size limits among online checkers.
• Check history lets you track pool dynamics.
• Clear summary statistics for the list.
• Completely free, no registration.
• Russian-language interface.

Cons

• Minimalist design without filters or sorting in the table.
• No target URL checks and no API.
• Authorized proxies are checked incorrectly or not at all.
• Speed of large-list checking is not high — you have to wait.
• No support as such, only a feedback form.

Who It's For

Users who regularly filter large lists of public or server proxies without authorization. Suitable for quick preliminary cleaning before more detailed checking with another tool. Practically useless for mobile proxy owners with login and password.

Best choice for: mass preliminary filtering of large lists without authorization.

Main advantage: large limits and check history at zero cost.

Overall score: 7.4/10

• Features: 6/10
• Price: 10/10
• Usability: 7/10
• Tech support: 5/10
• User reviews: 7/10

#8. FOGLDN Proxy Tester — Measuring Proxy Speed to a Specific Site

General Information

FOGLDN Proxy Tester is a free desktop program for Windows and macOS, created in the community of limited-item purchase automation, where latency to the target site decides the outcome. The tool focuses not on determining type or anonymity but on measuring the actual response time of a specific site through each proxy.

Key Features

• Testing a list of proxies against a given URL with response time measured in milliseconds.
• Full support for the ip:port:login:password format — authorized proxies are checked without issues.
• Multi-threaded checking with configurable thread count.
• Color coding: fast, medium, slow, dead.
• Export of a list sorted by speed.
• Native builds for Windows and macOS.

For the mobile proxy audience, this is one of the most practical tools in the ranking: it answers the question "how fast will the site I need open through this proxy" rather than the abstract "is the proxy alive." The difference is significant because a mobile node might respond to ping in 200 ms but serve a marketplace page in three seconds.

Plans and Pricing

Completely free, with no registration or paid features. The developers monetize other products and distribute the tester as a community helper tool.

Pros

• Checking against a real target site, not a test endpoint.
• Correct handling of login/password authorization out of the box.
• There's a macOS version, which is rare among desktop checkers.
• Simple interface: list, URL, button, result.
• Free.

Cons

• Doesn't detect proxy type, anonymity level, or geolocation.
• No scheduler, list auto-updates, or API.
• Updates infrequently; support is community-limited.
• English-only interface.

Who It's For

Media buyers and e-commerce project owners who care about the response speed of a specific platform through each proxy. Pairs well with a full proxy checker: first filter your pool by liveness and type in another tool, then rank by speed to the target site here. As a sole tool, it's insufficient.

Best choice for: ranking a pool by speed to a specific target site.

Main advantage: measuring real latency to the needed resource with authorization support.

Overall score: 7.3/10

• Features: 6/10
• Price: 10/10
• Usability: 9/10
• Tech support: 5/10
• User reviews: 7/10

#9. IPQualityScore — IP Reputation and Pool Quality Checking

General Information

IPQualityScore is an American risk assessment service founded in 2011. It's not a proxy checker in the classic sense: it doesn't check liveness but evaluates the reputation of the exit IP. The service determines whether an address is listed as a proxy, whether it's on spam lists, its risk score from 0 to 100, and which carrier and network type it belongs to. For pool owners, this is a second level of control: a proxy can be alive and fast but have a reputation that makes ad systems treat it warily.

Key Features

• Fraud score for each IP on a 0 to 100 scale.
• Flags: proxy, data center, mobile network, recent abuse, botnet participation.
• Detection of carrier, ASN, connection type, geolocation.
• REST API with JSON responses and bulk checking via CSV upload.
• Integrations with popular analytics and anti-fraud platforms.
• Web interface for spot checks without code.

For mobile proxies, the risk score should be interpreted cautiously: mobile IPs are inherently shared, hundreds of subscribers exit through one address, so a moderate score is normal, not an alarm signal. The service's value is in showing outliers: addresses with abnormally high risk that should be excluded from rotation.

Plans and Pricing

The free plan gives about 5,000 checks per month after registration. Paid tiers start at around $99 per month and scale by request volume up to tens of thousands of dollars for corporate clients. For auditing a pool of several hundred addresses, the free limit is more than enough.

Pros

• The only tool in the ranking that evaluates reputation, not just liveness.
• Generous free limit for small pools.
• Detailed API with good documentation and SDKs for popular languages.
• Correctly identifies mobile networks and carriers.
• Fast support via tickets; the knowledge base is updated regularly.

Cons

• Doesn't check proxy availability, speed, or type — needs to be paired with a regular checker.
• Paid tiers are expensive for individual users.
• Risk assessment is a probabilistic model, not a verdict; requires context understanding.
• Interface and documentation are English-only.

Who It's For

Media buying teams and business owners who compare the quality of pools from different providers and want to exclude addresses with bad history. Developers can easily embed the API into their monitoring. For beginners with a dozen proxies, the service is excessive.

Best choice for: assessing pool reputation and comparing providers by IP quality.

Main advantage: a risk score and abuse flags that regular proxy checkers don't have.

Overall score: 7.2/10

• Features: 8/10
• Price: 6/10
• Usability: 7/10
• Tech support: 8/10
• User reviews: 8/10

Comparison Table of Proxy Checkers

Below is a summary of key parameters. Format: tool, solution class, platform, price, target URL check, login/password authorization, API, automation.

• A-Parser — desktop/server; Windows, Linux; from ~$179 one-time; target URL — yes; authorization — yes; API — yes; scheduler — yes. Overall score 8.7.
• ZennoProxyChecker — desktop; Windows; free; target URL — yes; authorization — yes; API — no; scheduler — yes. Overall score 8.5.
• hidemy.name — online; any browser; free; target URL — no; authorization — limited; API — no; scheduler — no. Overall score 8.2.
• proxy-scraper-checker — console; Windows, macOS, Linux, Docker; free; target URL — yes; authorization — yes; API — via code; scheduler — via cron. Overall score 8.0.
• GSA Proxy Scraper — desktop; Windows; ~€79–99 one-time; target URL — yes, multiple; authorization — yes; API — no; scheduler — yes. Overall score 7.8.
• ProxyScrape — online; any browser; free; target URL — no; authorization — limited; API — yes; scheduler — no. Overall score 7.6.
• checkerproxy.net — online; any browser; free; target URL — no; authorization — no; API — no; scheduler — no. Overall score 7.4.
• FOGLDN Proxy Tester — desktop; Windows, macOS; free; target URL — yes; authorization — yes; API — no; scheduler — no. Overall score 7.3.
• IPQualityScore — cloud API; any; free up to ~5,000 checks per month, then from ~$99; target URL — not applicable; authorization — not applicable; API — yes; scheduler — via code. Overall score 7.2.

Pay attention to the authorization column. For mobile proxy users, this is filter number one: three online checkers out of nine handle login and password poorly or not at all. Desktop and console tools are more reliable in this regard.

Alternatives Not Included in the Main Ranking

2ip.ru — a popular Russian-language service with a proxy checking section. Convenient for spot-checking one or two addresses and determining anonymity, but bulk checks are limited, so it didn't make the top. Worth considering if you need to quickly check one proxy before an important session.

Pixelscan and similar fingerprint-checking services — show how your connection looks through the eyes of anti-fraud systems: whether the time zone matches the IP geolocation, whether there are leaks via WebRTC and DNS. These aren't pool checkers but tools for a final check of a single connection. Useful in combination with any tool from the ranking, but they won't check a pool on their own.

mubeng — an open-source Go utility combining proxy checking and rotation through a local port. Fast and lightweight, but develops slower than proxy-scraper-checker and has less detailed documentation. A good option for developers who need a single binary without dependencies.

ProxyBroker — once the most famous Python library for finding and checking proxies. The original project hasn't been updated since 2019; forks exist, but their stability varies. We mention it as a historical reference point: if you come across it in old guides, better to look at modern analogs right away.

Built-in checkers of antidetect browsers — almost all popular solutions check a proxy when adding a profile. This is convenient, but the check happens for one address and doesn't give a picture of the pool. The topic of configuring proxies in antidetect browsers is covered in detail in other blog articles, so we won't expand on it here.

Recommendations for Choosing a Proxy Checker

Best for beginners: the online checker hidemy.name. Nothing to install, the result is clear, and the interface is in Russian. When you hit authorization limitations, move on to the next item.

Best for professionals: A-Parser, if you already scrape data and are ready for a one-time investment. If not — ZennoProxyChecker covers most professional tasks for free, but only on Windows.

Best value: pair ZennoProxyChecker for bulk checking with FOGLDN Proxy Tester for measuring speed to the target site. Both are free and complement each other.

Best features: A-Parser by a noticeable margin. Second place goes to GSA Proxy Scraper thanks to its test matrix against multiple sites.

Best for developers: proxy-scraper-checker as the foundation plus IPQualityScore for the reputation layer. Both parts are easily combined into a single monitoring script.

Best for small business: ZennoProxyChecker on a single workstation with pool distribution via a local port. For medium business — GSA Proxy Scraper with scheduler and auto-export. For large — A-Parser on a dedicated server plus IPQualityScore for provider audits.

Best for macOS users: proxy-scraper-checker for those comfortable with the terminal, and FOGLDN Proxy Tester for those who prefer a graphical interface.

General advice: don't rely on a single tool. Liveness, speed to the target site, and reputation are three different quality dimensions, and no proxy checker in the ranking covers all three equally well.

FAQ: Common Questions About Proxy Checkers

What's the Difference Between Liveness Checking and Quality Checking?

Liveness is a proxy's ability to accept a connection and pass a request. Quality is a set of parameters: speed to the needed site, stability, conformance to the claimed geolocation, IP reputation. A proxy can be alive but unsuitable for a specific task, which is why professionals check both levels.

Why Doesn't an Online Proxy Checker See My Mobile Proxies?

Most often it's about authorization. Most web forms expect ip:port format and can't pass a login and password. The second variant is IP authorization: the proxy accepts connections only from your address, while the checker's server is located elsewhere. In both cases, use a desktop or console tool that runs from your machine.

How Often Should a Pool Be Checked?

Depends on the proxy type and task. For mobile proxies with rotation, a reasonable interval is from five to thirty minutes, because the exit IP changes and it's useful to track the shift. For static addresses, an hourly check and a mandatory check before an important session are enough.

Can You Trust the Anonymity Score from a Checker?

As a guideline — yes, as a guarantee — no. The anonymity level is determined by the headers the proxy passes to a test server. Real anti-fraud systems analyze far more parameters. Treat an "elite" mark as a necessary but not sufficient condition.

Why Check a Proxy Against a Target URL If It's Alive Anyway?

Because the target site may serve a captcha, access error, or empty page specifically to that IP. The checker's test endpoint won't show this. Tools with URL checking — A-Parser, ZennoProxyChecker, GSA Proxy Scraper, proxy-scraper-checker, FOGLDN — save time figuring out the causes of failures.

What Does a High Fraud Score on a Mobile IP Mean?

Mobile addresses are used by hundreds of subscribers simultaneously, so a moderate risk score is typical for them. Pay attention not to the absolute value but to outliers within your pool and to specific flags like recent abuse. An address with a score noticeably above the pool average is reasonable to temporarily exclude from rotation.

Is It Worth Paying for a Proxy Checker If There Are Free Ones?

For most marketing and media buying tasks with a pool of up to several hundred addresses — no. ZennoProxyChecker and proxy-scraper-checker cover the needs for free. Paying makes sense for automation in a large team, for integration with scraping, or for reputation data that can't be obtained for free.

How Many Threads Should You Set When Checking?

For public lists — hundreds; for private mobile proxies — be careful. Too aggressive checking creates load on the node and may be perceived by the provider as abuse. Start with 10–20 threads on a private pool and increase if the provider doesn't object.

How Do You Objectively Compare Two Proxy Providers?

Take equally sized samples, check them with one tool and identical settings at the same time of day over a week. Record the share of live addresses, average speed to the target site, and the distribution of reputation scores. A single check tells you nothing: pool quality fluctuates throughout the day.

Conclusion

The proxy checker market in 2025 has split into three classes, and each has a worthy leader. Among desktop solutions, A-Parser and ZennoProxyChecker offer maximum automation; among online tools, hidemy.name remains the most convenient for quick checks; and among open source, proxy-scraper-checker sets the bar for developers. The reputation layer is covered by IPQualityScore, and speed measurement to a specific site — by FOGLDN Proxy Tester.

The final recommendation is simple. Determine what's more important to you: checking speed, working with authorized proxies, automation, or reputation. Then choose one primary tool and one auxiliary. For mobile proxy users, we recommend starting with a desktop or console checker, because online services handle login and password poorly.

Trends of 2024–2025 are visible to the naked eye. Liveness checking is no longer sufficient: platform anti-fraud systems are getting more complex, and target-site checking and reputation assessment are coming to the fore. Open-source projects in Python and Go are developing faster than commercial desktop programs, some of which have moved into maintenance mode. Demand is growing for APIs and integration into custom pipelines instead of manual checks.

In the coming years, we should expect classes to converge: online services will add APIs and authorization support, while reputation services will add basic availability checks. Tools will appear that evaluate proxies from the perspective of specific platforms rather than abstract anonymity. Until that happens, combine tools from the ranking and regularly recheck your pool. A good proxy checker won't make bad proxies good, but it will save you from unpleasant surprises at the worst possible moment.