Is this proxy checker tool completely free?

Yes. ProxyCrown Proxy Checker is 100% free with no registration, credit card, or subscription required. You can test single or bulk proxies anytime.

What proxy protocols are supported?

Our verification engine supports HTTP, HTTPS (via SSL CONNECT tunnels), SOCKS4, and SOCKS5 proxies with or without username/password authentication.

What are the differences between Elite, Anonymous, and Transparent proxies?

Elite (Level 1) proxies conceal your real IP and do not send proxy identification headers (Via or X-Forwarded-For). Anonymous (Level 2) proxies conceal your real IP but identify themselves as a proxy. Transparent (Level 3) proxies expose your real IP to target web servers.

Why do free public proxies fail or die so quickly?

Public proxy lists are scraped by thousands of automated bots simultaneously, causing severe bandwidth overload, IP bans by Cloudflare/Akamai, and frequent server shutdowns. For production workloads, dedicated or residential proxies like ProxyCrown provide 99.9% uptime.

What proxy formats can I paste into the tool?

You can paste standard formats including ip:port, ip:port:user:pass, user:pass@ip:port, and protocol://user:pass@ip:port.

Free Real-time Diagnostic Utility

Free Online Proxy Checker

Test and validate bulk HTTP, HTTPS, SOCKS4, and SOCKS5 proxies in real time. Inspect live ping latency, exit IP geolocation, ISP network, and anonymity level with zero rate-limits.

Looking for your own IP address?Check What Is My IP

Protocol:

Timeout:

Paste Proxies (One per line — up to 50 at a time)

Formats supported: ip:port, user:pass@ip:port, ip:port:user:pass0 proxies entered

Live Code Snippet Generator

Integrate Checked Proxy in 1-Click

Testing proxy target: gw.proxycrown.com:8080 (HTTP)

# Test connection and print exit IP
curl -x http://gw.proxycrown.com:8080 https://httpbin.org/ip -v

Performance Benchmark

Public Free Proxies vs. ProxyCrown Enterprise

Why scraping and data teams replace unstable public proxies with residential pools.

Feature / Metric	Free Public Proxies	ProxyCrown Network
Connection Uptime	~15% (Dies within minutes)	99.9% SLA Guaranteed
Average Speed	< 1 Mbps (High congestion)	Up to 10 Gbps Unthrottled
Anonymity & Security	High Risk (Traffic Snooping)	100% Elite Anonymity, Encrypted
IP Pool Size	< 3,000 blacklisted IPs	32M+ Clean Residential IPs
Scraping Success Rate	~12% (Blocked by Cloudflare)	99.4% Anti-Bot Bypass Rate

Start testing with 32M+ clean residential proxies from $3/GB.

View Plans & Pricing Residential Proxies

Complete Guide to Proxy Checking & Anonymity

What is a Proxy Checker?

A proxy checker is an automated testing tool that connects to proxy server endpoints (IP and port) to verify whether they accept TCP traffic, establish HTTP/HTTPS tunnels, or route SOCKS5 packets. It records latency in milliseconds and verifies if the exit IP differs from the origin.

Elite vs. Transparent

Elite (Level 1): Never leaks your IP address and sends zero proxy headers.
Anonymous (Level 2): Conceals your IP but reveals that a proxy is being used.
Transparent (Level 3): Passes your real IP in the X-Forwarded-For header, offering zero privacy.

HTTP vs. SOCKS5

HTTP/HTTPS: Ideal for web scraping, browser automation, and standard web requests.
SOCKS5: Operates at OSI Layer 5, supporting any protocol (UDP, TCP, FTP, SMTP, VoIP, gaming), lower latency, and higher flexibility for raw socket connections.

Explore ProxyCrown Proxy Types

Dedicated infrastructure engineered for high-throughput enterprise applications.

Residential Proxies

Global pool of real residential IPs with precise geo-targeting and zero contracts.

$2.00 /GBExplore

Datacenter Proxies

Top speeds with zero bandwidth limits. Best for speed-critical use cases.

$1.39 /proxyExplore

Mobile Proxies

Real mobile devices from top carriers. Perfect for social platforms and mobile app testing.

$10.11 /dayExplore

ISP Proxies

Static residential IPs with datacenter speed. Ideal for long sessions and ecommerce.

$2.00 /proxyExplore

Got Questions?

Frequently Asked Questions

Everything you need to know about proxy testing, validation algorithms, and anonymity standards.

Yes, absolutely. ProxyCrown Proxy Checker is completely free without any signup, credit card, or email requirements. You can test your personal, public, or enterprise proxies directly in your browser.

Developer Diagnostic Suite

Interconnected Network & Proxy Utilities

Switch seamlessly between our free diagnostic utilities to audit proxies, inspect headers, and ensure zero fingerprint leakage.

Code Generator

Generate ready-to-run proxy snippets in Python, Node, cURL, Go, and Playwright.

Launch Tool

Current Tool

Proxy Checker

Bulk test HTTP & SOCKS5 proxies for latency, anonymity tiers, and real-time uptime.

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What Is My IP

Instantly inspect your public IP, exact geolocation, ISP, ASN, and WebRTC leak risks.

Launch Tool

HTTP Header Checker

Audit HTTP request & response headers, OWASP security grades, and proxy header leaks.

Launch Tool

Chrome Extension

1-click browser proxy switcher with automated WebRTC leak shield & live diagnostics.

Launch Tool

Deploy production-ready proxies with zero header leaks:

Residential Proxies (32M+ Clean IPs)•Datacenter Proxies (10Gbps)•Mobile 4G/5G Proxies•How It Works•View Pricing

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