Bulk register devices with predefined AppKey

Hi,
I want to register several nodes using a bulk registers devices. Each node have its own app key, and when I try to register them in TTN I only have two options, the same app key for all nodes or a random app key, but the app key is predefined in the node.

Is it possible to register several nodes with different predefined app key using bulk register option?

Thank you.
Best

Did you see the command line ttnctl? I don’t think it has a bulk option like the TTN Console GUI does, but of course running a CLI command multiple times is easily done.