Who links to darwin-online.org.uk?

1,931 domains link to darwin-online.org.uk 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 · 1,931 referring domains

Strongest referring domains

#	Referring domain	Domains linking to it
1	google.com	15,904,056
2	wikipedia.org	2,226,572
3	cloudfront.net	1,153,342
4	amazonaws.com	1,047,764
5	blogspot.com	880,829
6	nih.gov	673,479
7	github.io	464,772
8	weebly.com	456,220
9	wikimedia.org	369,850
10	substack.com	272,627
11	hatena.ne.jp	270,725
12	harvard.edu	268,680
13	nature.com	231,025
14	tinyurl.com	226,506
15	mit.edu	174,349
16	stanford.edu	172,882
17	oup.com	147,221
18	nasa.gov	135,422
19	cornell.edu	134,299
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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