How can these IP segments be merged into one or more segments?

[BadDeveloper2022]

How can these IP segments be merged into one or more segments?
I have hundreds of thousands of city level IP segments here.
I want to shorten these at the national or provincial level.

[janvanbesien]

I don't understand what you want to achieve. These are non consecutive networks (segments), so merging would imply making them larger?

Describe your desired output if you want me to help you figure it out.

(and please use text rather than images, so that I can copy/paste the addresses when writing an example)