https://ahrefs.com/backlink-checker
Free Backlink Checker by Ahrefs: Check Backlinks to Any Site
With the world's biggest index of live backlinks (over 15 trillion), Ahrefs Backlink Checker will show you the most complete backlink profile for any website.
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https://pl.majestic.com/backlink-checker
The Majestic Free Backlink Checker
Free backlink checker data from one of the first search-engine independent SEO tools for SEO Professionals and Digital Marketers alike.
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