CitedBy / Backlinks / challenges.fr
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Who links to challenges.fr?
8,990 domains link to challenges.fr in the latest Common Crawl web graph (Aug-Oct 2026). Below are the 20 strongest. Strength is how many domains link to that referrer.
Common Crawl graph cc-main-2026-aug-sep-oct · read 2026-10-23 · 8,990 referring domains
Strongest referring domains
| # | Referring domain | Domains linking to it |
|---|---|---|
| 1 | google.com | 15,904,056 |
| 2 | wikipedia.org | 2,226,572 |
| 3 | europa.eu | 1,227,455 |
| 4 | amazonaws.com | 1,047,764 |
| 5 | blogspot.com | 880,829 |
| 6 | bit.ly | 767,766 |
| 7 | wix.com | 570,161 |
| 8 | github.io | 464,772 |
| 9 | wikimedia.org | 369,850 |
| 10 | substack.com | 272,627 |
| 11 | harvard.edu | 268,680 |
| 12 | bing.com | 229,926 |
| 13 | tinyurl.com | 226,506 |
| 14 | mail.ru | 151,316 |
| 15 | indeed.com | 114,564 |
| 16 | deloitte.com | 105,658 |
| 17 | free.fr | 100,713 |
| 18 | google.fr | 100,431 |
| 19 | netlify.app | 91,544 |
| 20 | constantcontact.com | 90,893 |
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Method and limits
Source: Common Crawl's public domain web graph, built from three monthly crawls (134,979,706 domains, 1,817,202,146 links). We count distinct linking domains, not pages, and do not use any third-party backlink index. Common Crawl samples the web, so counts are lower than a full index such as Ahrefs or Semrush; use them to compare sites and spot big referrers, not as an exact total. Updated each quarter, last graph: cc-main-2026-aug-sep-oct. Nofollow and link position are not in this data.
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