On Windows, use PowerShell to get a list of open ports and the process and service names (sometimes with paths) that are holding them open

ShowListeners.ps1

# Script: ShowListeners.ps1 
# Author: MotoX80 and Evgenij Smirnov on MS forums
# pmarreck note: If you get a security block, you may need to run the following first:
# Set-ExecutionPolicy -ExecutionPolicy Unrestricted -Scope Process
# (or use CurrentUser for the -Scope if you want it to apply outside the current session, less secure though)
# For more, see: https://docs.microsoft.com/en-us/powershell/module/microsoft.powershell.security/set-executionpolicy?view=powershell-7.2

$rpt = @()
$services = Get-CimInstance -Class Win32_Service -Filter 'State="Running"' | Select Name, ProcessID
$Listeners = Get-NetTCPConnection | Where-Object {$_.State -eq "Listen"}
foreach ($l in $Listeners){
    $proc =  Get-Process -ID $l.OwningProcess
    $rpt +=  [PSCustomObject]@{                                                           
                    Port = $l.LocalPort
                    Pid = $l.OwningProcess
                    ProcessName = $proc.ProcessName
                    Service = (-join (($services.Where({$_.ProcessID -eq $l.OwningProcess})) | foreach {"$($_.name), "})).trimend(', ')
                    Path = $proc.Path
               }
}
$rpt | Sort-Object -property Port | Format-Table