Outgoing port tester

This server listens on all TCP ports, allowing you to test any outbound TCP port.

You have reached this page on port 3875 (from http host header).

Your network allows you to use this port. (Assuming that your network is not doing advanced traffic filtering.)

Network service: unknown
Your outgoing IP: 52.14.178.241

Test a port using a command

$ telnet portquiz.net 3875 
Trying ...
Connected to portquiz.net.
Escape character is '^]'.

$ nc -v portquiz.net 3875 
Connection to portquiz.net 3875 port [tcp/daytime] succeeded!

$ curl portquiz.net:3875 
Port test successful!
Your IP: 52.14.178.241

$ wget -qO- portquiz.net:3875 
Port test successful!
Your IP: 52.14.178.241

# For Windows PowerShell users
PS C:\> Test-NetConnection -InformationLevel detailed -ComputerName portquiz.net -Port 3875

Test a port using your browser

In your browser address bar: http://portquiz.net:XXXX

Examples:
http://portquiz.net:8080
http://portquiz.net:8
http://portquiz.net:666

Your browser can block network ports normally used for purposes other than Web browsing. In this case you should use the telnet or netcat commands to test the port.

Please also note that this server uses some port for real services (22, 25), so testing with your browser on those ports will not work.

Rate limiting

05/06/2020 : I had to set up Rate limiting on new connections by IP, otherwise the charge was too high for the small portquiz VM. Sorry for that.

Contact/feedback:

Marc MAURICE

See also:

Blog post on this topic and How it works
Firebind, a commercial tester. javascript test
outPorts, a tiny program to test a range of ports using portquiz