How many proxies can be checked at once?

Up to 1000 proxies can be checked.

How long is the check result stored?

The result is stored indefinitely. On the server, it is replaced by newer check results when storage space runs out.

Which proxies can be checked?

You can check proxies that support http, https, socks4, or socks5 protocols.

What is the outgoing IP?

This is the IP address from which the proxy operates. This IP address will be seen by the target resource.

What does HTTPS availability mean?

If you need to access a site that works only over HTTPS, the proxy must support HTTPS tunneling. Otherwise, you will not be able to connect via HTTPS.

How to check availability of a specific site?

In the check settings, you can select the site you want. If it is not in the list, you can enter the domain manually and check it using a special parameter.

Online proxy checking

Check your list of proxies for functionality, geolocation, custom URL access, and many other parameters.

Check parameters

GeoOutgoing IPWebsite access

HTTPS availabilityData modification (MITM)Proxy typeAnonymity

Proxy listPaste proxies (one per line)

Check result

Filters

▸ Filter proxies

No result yet

Run the scan to get the proxy check result

Online proxy server checking for business, development, and security

Proxy Checker by ATMLAB is a professional online tool for in-depth proxy server analysis. Designed for developers, security specialists, SEO experts, and teams who need to understand the real proxy behavior, not just connection success.

Unlike simple checkers, ATMLAB Proxy Checker analyzes anonymity, traffic integrity, HTTPS access, possible MITM interference, and compliance of proxy features with reality.

What ATMLAB Proxy Checker checks

Proxy geolocation (GEO)

Determines the real geographic location of the proxy IP: country, region, city, and compliance with declared GEO.

Real outgoing IP address

Shows the actual IP from which the external service sees the request. Helps detect IP substitution and opaque proxy chains.

Website accessibility via proxy

Checks access to HTTP and HTTPS resources, response correctness, and connection stability.

HTTPS and SSL certificate checking

Detects TLS handshake issues, certificate substitution, and proxies compromising HTTPS security.

MITM detection (Man-in-the-Middle)

Proxy Checker analyzes data integrity, detects header modifications and traffic interference.

Proxy anonymity checking

Determines proxy anonymity level: Transparent, Middle, or High.

Proxy type determination

Classifies proxies by type: Datacenter, Residential, or Mobile.

Additional checks

ATMLAB platform is constantly evolving. Soon, speed, stability, IP reputation, and block analysis checks will be added.

Why ATMLAB Proxy Checker

Most online checkers limit themselves to availability checks. ATMLAB Proxy Checker is created by engineers and focuses on real-world usage: security, transparency, and technical accuracy.

Who should use Proxy Checker

- SEO specialists
- Traffic arbitrage professionals
- Developers
- Cybersecurity specialists
- SaaS and service owners

Use ATMLAB Proxy Checker

Check proxies right now and get a complete technical picture of their real behavior.

ATMLAB — engineering approach to infrastructure, security, and network tools.

FAQ

How many proxies can be checked at once?: Up to 1000 proxies can be checked.
How long is the check result stored?: The result is stored indefinitely. On the server, it is replaced by newer check results when storage space runs out.
Which proxies can be checked?: You can check proxies that support http, https, socks4, or socks5 protocols.
What is the outgoing IP?: This is the IP address from which the proxy operates. This IP address will be seen by the target resource.
What does HTTPS availability mean?: If you need to access a site that works only over HTTPS, the proxy must support HTTPS tunneling. Otherwise, you will not be able to connect via HTTPS.
How to check availability of a specific site?: In the check settings, you can select the site you want. If it is not in the list, you can enter the domain manually and check it using a special parameter.