how to find out if kernel or udev created a device node?

Is there any way I can tell if the origin/creater of an device node has been udev or the kernel itself?

In the specific case of mine I have two webcams. Nodes created to them are /dev/video0 and /dev/video1. Unfortunatelly it is not a constant assignment. Now I though that is exactly the case to use udev for but when I create an udev rule it seems to me that the video0 and video1 nodes are already created prior to udev being able to assign a more constant node like /dev/videoLogitech.

I hope to receive as an answer some suggestion regarding which log-file or which command my help me to find out about what happens here