How can i make my backlinks get indexed by google

Hi ..
i am doing some link building and most of the link back pages are not yet indexed by google ..all of them are good sites and most niche related sites and i believe these link backs will give my site a very good ranking in serps
my question is how do i make these urls to get indexed by google ..any way or any tool …
i know slow and steady thing but these are links which are created long back and atleast a month old

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