Most citations remain unclassified by source type | Trakkr Research
Most citation volume sits outside the hand-maintained named source map.
Methodology: Built from 48,422,016 citation appearances across 529,165 unique domains in the latest valid snapshot for 1,643 tracked brands, observed from October 3, 2025 to August 18, 2026.
Claim
The “other” category accounts for 86.75% of citation appearances in the current index.
Why it matters
Category shares are partial and should not be treated as a complete ranking of the web.
Supporting metrics
| Metric | Value | Context |
|---|---|---|
| Unclassified share | 86.75% | Domains outside the current named source map remain in “other”. |
| Unique domains | 529,165 | Distinct normalized domains in the current brand snapshots. |
Related pages
Continue through the same study cluster.
- why does wikipedia still win so often - Related answer page
- how big is the competitive set for ai citations - Related answer page
- source category share tracker - Related tracker page
Data & Sources
- AI Citation Index - Flagship study behind this page
- Page JSON - Machine-readable companion file