Ironically, that is a node where I do not recommend the module for that particular problem (but at least mention it so the OP here could have at least looked into it).
Also, if the OP googled for the right stuff (or even some other stuff) he could have also found help (though it seems the word "merge" is much more helpful than "collapse").

In reply to Re^2: Collapse IP Ranges by runrig
in thread Collapse IP Ranges by rethaew

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