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Who links to radboudumc.nl?
2,885 domains link to radboudumc.nl 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 · 2,885 referring domains
Strongest referring domains
| # | Referring domain | Domains linking to it |
|---|---|---|
| 1 | google.com | 15,904,056 |
| 2 | apple.com | 2,526,600 |
| 3 | wikipedia.org | 2,226,572 |
| 4 | microsoft.com | 1,341,331 |
| 5 | europa.eu | 1,227,455 |
| 6 | amazon.com | 1,225,528 |
| 7 | cloudfront.net | 1,153,342 |
| 8 | amazonaws.com | 1,047,764 |
| 9 | blogspot.com | 880,829 |
| 10 | github.com | 792,509 |
| 11 | nih.gov | 673,479 |
| 12 | github.io | 464,772 |
| 13 | weebly.com | 456,220 |
| 14 | jotform.com | 248,892 |
| 15 | outlook.com | 233,817 |
| 16 | stanford.edu | 172,882 |
| 17 | mayoclinic.org | 162,888 |
| 18 | mail.ru | 151,316 |
| 19 | prnewswire.com | 147,597 |
| 20 | mdpi.com | 133,989 |
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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. Adult-content domains are left out of the list, so a page can show fewer than 20. Spam and link-network domains are shown as they are.
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