Sometimes it's beneficial to be able to retrieve your public routable IP address via the command line so that you can use it in scripts. Using only native tools in Windows this is not possible. I do have an old script that uses a hybrid batch and VBScript solution that uses telnet to connect to a PHP script that dumps back the REMOTE_ADDR super global, but it was clunky and didn't always work reliably. Below is a hybrid batch and powershell script that can do it. Of course this could be done with only powershell, but I wrote it this way so I could use it in both powershell and batch scripts.
Here is the code:
@echo off
powershell -encodedcommand KABuAGUAdwAtAG8AYgBqAGUAYwB0ACAAcwB5AHMAdABlAG0ALgBuAGUAdAAuAHcAZQBiAGMAbABpAGUAbgB0ACkALgBkAG8AdwBuAGwAbwBhAGQAcwB0AHIAaQBuAGcAKAAiAGgAdAB0AHAAOgAvAC8AYwBoAGUAYwBrAGkAcAAuAGEAbAB0AGUAcgB2AGkAcwB0AGEALgBvAHIAZwAvAGkAcAAuAHAAaABwACIAKQA=
Here is the decoded base64 powershell code:
(new-object system.net.webclient).downloadstring("http://checkip.altervista.org/ip.php")
