Free backlink checker
See which domains link to any website, measured on the open Common Crawl web graph. Enter a domain to get its referring-domain count, top backlinks, and how many links it gained or lost in the latest release.
How this backlink checker works
Most backlink tools charge for lookups against a proprietary index. This checker runs on the open Common Crawl web graph — a public crawl covering 100M+ domains, refreshed several times a year. We ingest each release and compute domain-to-domain link relationships from it, so the numbers you see are measured, not estimated.
A referring domain is a website with at least one page linking to the domain you checked. Referring-domain count is the metric most correlated with search visibility — more distinct sites linking to you generally means more authority.
Want this for every client you manage? Linkwake tracks whole portfolios of domains and shows you new, lost, and persistent backlinks each release — plus which domains link to your competitors but not you. Plans start at $29/mo, with a free tier for 5 domains.