Sponsorship - how to contact with all organizers?


Is there any place where I could contact all meetups organizers?? I am looking for some active groups, to form sponsorships.
Unfortunately, meet-up box is not the best option - they banned me after sending 30 similar messages to organizers :frowning: .
Is .net foundation looking for some global sponsor for all meetups? Who to ask about it?

I will be very grateful for the help :wink:

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