Where are the Winpcap / Network Packet filter drivers located?

I'm wondering this primarily for educational purposes. I installed Winpcap, but can't actually find reference to it on the system.

In services.msc I see no reference to Winpcap or NTP.

I'm able to start the service by typing "net start ntp", and it confirms that the NetGroup Packet Filter has started. However if I type "net start" again, it generates a list of the windows services that are running, and I see no reference to the NetGroup Packet Filter which I just started and is running, nor a reference to winpcap.

So basically, I can start and stop it, and it works, but I can't actually find record of it running, as if its invisible. So how can I find it?

note: wireshark works just fine, I'm just wondering purely for my own knowledge of understanding how this service or driver can be seemingly invisibly running.