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Who links to tu-sofia.bg?
937 domains link to tu-sofia.bg 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 · 937 referring domains
Strongest referring domains
| # | Referring domain | Domains linking to it |
|---|---|---|
| 1 | wikipedia.org | 2,226,572 |
| 2 | microsoft.com | 1,341,331 |
| 3 | europa.eu | 1,227,455 |
| 4 | blogspot.com | 880,829 |
| 5 | github.io | 464,772 |
| 6 | weebly.com | 456,220 |
| 7 | wixsite.com | 340,110 |
| 8 | b-cdn.net | 173,129 |
| 9 | mdpi.com | 133,989 |
| 10 | ieee.org | 74,758 |
| 11 | moodle.org | 40,114 |
| 12 | siemens.com | 35,374 |
| 13 | iop.org | 33,680 |
| 14 | proquest.com | 25,729 |
| 15 | hawaii.edu | 23,519 |
| 16 | britishcouncil.org | 20,589 |
| 17 | uni-heidelberg.de | 18,039 |
| 18 | repec.org | 16,781 |
| 19 | kit.edu | 14,325 |
| 20 | ucr.edu | 14,252 |
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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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