We are tracking Redirect Chains and show all the links from sites that are linking to your site via a redirect. 

For example, before if someone (someone.com) linked to your site (yoursite.com) through a redirect (bit.ly), we only showed that:

 someone.com links to bit.ly

 bit.ly links to yoursite.com

Starting from November 2015, we began to show that someone.com links to yoursite.com through a redirect bit.ly

For more info, please, refer to this post on Ahrefs Blog. 

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