Find subnet, command line, windows

Batch file:

Paste directly from command prompt:

@echo off & (for /f "delims=: tokens=2" %i in ('ipconfig ^| find "Address" ^| find /V "Link" ^| find "10.0."') do for /f "delims=. tokens=3" %b in ('echo %i') do echo %b)

Replace 10.0. to satisfy your own needs.