Free network tool

Does your SOCKS5 proxy support UDP?

Paste your SOCKS5 proxy below. Get a clear answer about connectivity and UDP, with the full test log a click away.

Your SOCKS5 proxies

One per line. Check up to 50 at a time.

0 / 50

All entries are tested as SOCKS5. See input formats.

Advanced options Login, import

Shared login is added to plain host:port entries. Entries with their own login keep it.

Import replaces the list above. Public HTTP and HTTPS URLs on ports 80 or 443 only.

Checks run from Localtonet’s server. Use a publicly reachable proxy address.

Getting started

Paste. Check. Choose.

For a single check, paste one address. For a bulk check, put each proxy on its own line. Login can be included in the address or added under Advanced options.

Local addresses such as 127.0.0.1 and private network IPs cannot be checked by this public tool. Use the external address supplied by your proxy provider.

Check HTTP and other proxy types

Accepted formats

Address
host:port
Address with login
host:port:user:password
Login before address
user:password@host:port
Explicit protocol
socks5://user:password@host:port
IPv6 address
[2001:db8::1]:1080

Formats are examples, not working proxies. Use percent encoding for special characters in URL credentials.

Read your results

The answer first. Details when you need them.

Online or failed

Online means the proxy completed the connectivity check. Failed can mean a wrong address, rejected login, firewall, timeout, or an unavailable proxy. Open its details for the reason.

UDP confirmation

“UDP confirmed” means the SOCKS5 relay returned a response. “Relay accepted” means it accepted UDP ASSOCIATE, but a round trip was not confirmed. These are different results.

IP, location & speed

Response time is measured from this server. Location uses the exit IP when available; an approximate location comes from the proxy host. An unknown value means that check could not be verified.

Why can TCP work while UDP fails?

SOCKS5 handles TCP and UDP separately. A proxy may accept TCP connections while UDP is disabled, filtered, or unable to return a response. Expand a result to see the relay and test log.

What is included in the download?

The text file includes the working entries in your current result filter, using the addresses and any login you submitted. Keep that file private if your proxies require credentials.

One quick verification

Complete this check to continue testing proxies.

Verification code
support