Use the below command to find an IP address within vCenter:

  
add-pssnapin vmware.vimautomation.core
  
connect-visserver <vcenter>

Get-VM | Select Name, @{N="IP Address";E={@($_.guest.IPAddress[0])}}
  

To filter, pipe the details to a where-object cmdlet, like so:

Get-VM | Select Name, @{N="IP Address";E={@($\_.guest.IPAddress[0])}} | ? {$\_."IP Address" -like "\*192.168.\*"}