Hi pinsdorf,
thanks for your reply, here are some answers to your questions:
putting the lookup in a own module.
=> Feel free, you just have to tell me, how i can grant write permissions to you (maybe via PN)
i closed my own pull request, as i didnt find any other option
Maybe you can also help in fixing this issue: https://github.com/paviro/MMM-FRITZ-Box-Callmonitor/issues/30
Regards
AxLED