Powershell function to check an IP against the public API of Greynoise

Test-Greynoise.ps1

function Test-Greynoise
{
    [CmdletBinding()]
Param (
    [Parameter(Mandatory = $false, ValueFromPipeline = $true)]
    [ValidatePattern({\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}})]
    [String]
    $IP)

    if(-not $IP)
    {
        #Try to get IPs from clipboard
        $c = Get-Clipboard
        if($c)
        {
            $IPList = ($c | sls -Pattern "\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}" -AllMatches).matches.value
            $result = @()
            foreach($i in $IPList)
            {
                $result += irm https://api.greynoise.io/v3/community/$($i)  
            }
            $result | Format-Table
        }
    }
    else {
        irm https://api.greynoise.io/v3/community/$($IP)       
    }

}