Public/Test-PrivateIP.ps1
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function Test-PrivateIP { <# .SYNOPSIS Use to determine if a given IP address is within the IPv4 private address space ranges. .DESCRIPTION Returns $true or $false for a given IP address string depending on whether or not is is within the private IP address ranges. .PARAMETER IP The IP address to test. .EXAMPLE Test-PrivateIP -IP 172.16.1.2 .EXAMPLE '10.1.2.3' | Test-PrivateIP #> param( [parameter(Mandatory,ValueFromPipeline)] [string] $IP ) process { if ($IP -Match '(^127\.)|(^192\.168\.)|(^10\.)|(^172\.1[6-9]\.)|(^172\.2[0-9]\.)|(^172\.3[0-1]\.)') { $true } else { $false } } } |