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Online Proxy Checker — Free Bulk Proxy IP Checker

Use our free online proxy checker to quickly test and verify proxy IPs in bulk. No registration or software installation is required. Simply paste your proxy list into the tool to check proxy availability, ports, protocols, and response times directly in your browser.

Proxy List

Type or paste proxies, one per line

ip:port / user:pass@ip:port / ip:port:user:pass / protocol://IP : port / protocol://user : pass@ip : port

Concurrent checks500

Retries per batch3

Max response timeout3,000 ms

Protocol:

HTTP HTTPS Socks5

✓Free & No Registration Required
✓Bulk & Parallel Proxy Checking
✓Automatic Protocol Detection
✓No Proxy Check Data Stored

How to Use ZooProxy Proxy Checker: Check Proxies in 3 Steps

Paste or Upload Your Proxy List

Paste your proxy list in the IP:Port format, with one proxy per line, or upload a .txt file to start the check.

Select the Protocol and Start Checking

Choose the proxy protocol you want to check, including HTTP, HTTPS, or SOCKS5, then start the proxy check.

Review the Results and Filter Working Proxies

Once the check finishes, the table shows proxy IP status. Review speed and pick available proxies.

ZooProxy Online Proxy Checker: Key Features and Benefits

Multi-Protocol Support

Supports the four major proxy protocols — HTTP, HTTPS,and SOCKS5,allowing you to check different types of proxies in one place for a variety of use cases.

Bulk & Concurrent Checking

Import a large proxy IP list and run multiple checks concurrently to verify an entire proxy list quickly, reducing the time required for manual, one-by-one testing.

IPv4 & IPv6 Support

Supports both IPv4 and IPv6 proxy addresses, making it easy to check and filter proxy IPs across different address types and network environments.

Privacy & Data Protection

Your submitted proxy data is protected throughout the checking process. Proxy IP information is not stored, reused, or publicly disclosed, helping reduce the risk of data exposure.

No Installation Required

No client download or environment setup is needed. Simply open the online proxy checker in a browser on any device and start checking proxy IPs whenever you need.

Clear & Visual Results

View the status and protocol information of each proxy in an easy-to-read results table. Quickly identify unavailable or timed-out proxies, filter the results, and export the selected proxies for later use.

Typical Use Cases of an Online Proxy Checker

Bulk Proxy Screening for Data Collection and AI Training

Data collection teams may need thousands of IPs daily, but fewer than 30% are consistently usable.When receiving a new proxy list, teams can use an online proxy checker to test connectivity, response times, and proxy protocols in bulk. Unresponsive, slow, or incompatible proxies can then be filtered out before the remaining IPs are added to data collection or crawler tasks. Pre-checking proxies helps reduce failed requests and unnecessary bandwidth consumption.

Testing for Overseas E-Commerce and Account Operations

Overseas e-commerce teams often manage multiple stores or accounts across different platforms. When region-specific access is required for legitimate testing or account operations, proxy availability and connection quality can affect the testing process. Bulk proxy checking makes it easier to identify unavailable or slow proxies before they are used, helping teams maintain a more consistent testing environment across different platforms and regions.

Global Brand Protection and Content Monitoring

Brand protection and compliance teams may regularly monitor product listings, user-generated content, and potential counterfeit or infringement-related pages across third-party platforms. A proxy list containing unavailable or slow IPs can interrupt monitoring tasks and reduce coverage. Checking proxies before a monitoring session helps teams identify unreliable nodes and maintain more consistent global monitoring workflows.

Regional Ad and SEO Performance Testing

Advertising and SEO teams often need to verify how webpages, search results, or advertisements appear in different geographic markets. For example, a team may compare search results for the same keyword in Germany and the UK, or verify whether an advertisement is displayed consistently across different U.S. regions. Using proxies associated with the target regions can help teams perform more representative geo-specific SEO and advertising tests, while an online proxy checker helps verify proxy availability before testing begins.

Need More Stable Proxy Resources?

Free proxies suit lightweight testing and short-term tasks. For more stable, larger-scale business needs, explore ZooProxy's professional proxy services.

Dynamic Residential Proxies

A flexible traffic-based plan with real residential IPs and automatic IP rotation.

Global coverage
City-level targeting
Rotating & sticky sessions
Traffic for sub-accounts

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Static ISP Proxies

Static residential IPs billed per IP, with top speed and stability.

Dedicated IP resources
Per-IP billing, unlimited traffic
No session time limit
Quality ASIN providers

$ 1.80 /IP From

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Unlimited Traffic - Port Plan

No speed or traffic limits — handle heavy workloads with long-term stability.

Multi-port mode
6 Mbps per port
Unlimited traffic and IPs
High-concurrency support

$ 0.38 /Port/Day From

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Unlimited Traffic - Bandwidth Plan

High bandwidth caps with massive unlimited traffic for a fast, stable dedicated channel.

Rotating & sticky sessions
Exclusive resource servers
Custom bandwidth options
High-concurrency, high-volume support

$ 19.67 /day From

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· Frequently Asked Questions

FAQ

This section covers common issues you may encounter during use, and you can independently refer to it for assistance in efficiently conducting your business

How does the proxy testing tool verify whether a proxy is working? ＋－

The verification process consists of three steps: 1. The tool first attempts to establish a connection with the proxy. 2. It then uses the handshake response to identify the supported protocol, such as HTTP, HTTPS, SOCKS4, or SOCKS5. 3. Finally, the tool sends a real request through the proxy IP and measures the response time. A proxy is marked as available only when all three steps are completed successfully. Please note that a proxy may connect successfully but still be unable to access a specific website. If you need to verify whether a proxy can access a particular target, we recommend testing it again during your actual task.

What types of proxies can this tool test? ＋－

The tool supports four major proxy protocols: HTTP, HTTPS, SOCKS4, and SOCKS5, as well as both IPv4 and IPv6 proxy addresses. IPs purchased through any ZooProxy plan can be tested with the tool. Simply paste the proxy information in the required format to start checking.

Does ZooProxy provide a proxy testing API? ＋－

Currently, the ZooProxy Online Proxy Checker is primarily available as a web-based tool and does not provide a dedicated proxy testing API. Developers can use the online tool to perform bulk proxy verification. If you need to integrate proxy checking into your own system, please contact our online customer support and provide details about your use case. We can evaluate the requirements for potential future API availability.

Why do different proxy checker tools show different results? ＋－

Differences between proxy checker results are normal and can be caused by factors such as the testing location, timeout threshold, test target, and testing time. Different tools may use servers in different locations, resulting in different network paths and latency when connecting to the same proxy. Different timeout settings can also cause slower proxies to be classified differently.

Can I test multiple proxies at the same time? ＋－

Yes. The bulk testing mode allows you to paste multiple proxy entries and check them together. The current maximum number of proxies per test is 5000. If your proxy list exceeds this limit, we recommend submitting it in multiple batches. All results are displayed in a single results table and can be filtered and exported based on proxy status.

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