Language: English · Français · Deutsch · Español · Nederlands
Who links to duo.nl?
2,558 domains link to duo.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 · 2,558 referring domains
Strongest referring domains
| # | Referring domain | Domains linking to it |
|---|---|---|
| 1 | wikipedia.org | 2,226,572 |
| 2 | europa.eu | 1,227,455 |
| 3 | nih.gov | 673,479 |
| 4 | github.io | 464,772 |
| 5 | wixsite.com | 340,110 |
| 6 | outlook.com | 233,817 |
| 7 | mdpi.com | 133,989 |
| 8 | zendesk.com | 107,073 |
| 9 | vercel.app | 102,669 |
| 10 | vice.com | 78,160 |
| 11 | ycombinator.com | 41,258 |
| 12 | rijksoverheid.nl | 34,371 |
| 13 | colorado.edu | 31,914 |
| 14 | arbeitsagentur.de | 25,480 |
| 15 | atlassian.net | 20,668 |
| 16 | belastingdienst.nl | 18,410 |
| 17 | overheid.nl | 17,059 |
| 18 | uu.nl | 16,348 |
| 19 | fu-berlin.de | 16,188 |
| 20 | uva.nl | 15,735 |
Look up another domain
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.
Can search engines and AI assistants read duo.nl?
Links get a site noticed. Access and clean markup get it cited. We crawl your site up to your plan's page limit and give you the exact fix for each issue. Free check first; full audits from €9, 14-day money-back guarantee.