# The current index tracks more than 700,000 cited URLs | Trakkr Research

Canonical URL: https://trakkr.ai/trakkr-research/citation-sources/facts/the-current-index-tracks-more-than-seven-hundred-thousand-cited-urls
Published: 2026-04-17
Last updated: 2026-04-17
Author: Mack Grenfell

AI systems do not just cite domains. They return to a large but finite set of pages.

## Methodology

Built from the live citation index backing Trakkr Research, using 8,777,687 citations across 208,567 unique domains observed between October 3, 2025 and April 17, 2026.

## Claim

Trakkr currently tracks 744,579 unique cited URLs in the public citation index.

## Why it matters

Winning citations often means earning inclusion in a repeat-cited URL set, not just a domain-level presence.

## Supporting metrics

| Metric | Value | Context |
| --- | --- | --- |
| Unique cited URLs | 744,579 | AI systems repeatedly converge on a relatively small URL set. |
| Citations analyzed | 8.78M | Current live citation index as of April 17, 2026. |

## Related pages

Continue through the same study cluster.

- [how big is the competitive set for ai citations](https://trakkr.ai/trakkr-research/citation-sources/answers/how-big-is-the-competitive-set-for-ai-citations) - Related answer page
- [what source categories show up most in ai answers](https://trakkr.ai/trakkr-research/citation-sources/answers/what-source-categories-show-up-most-in-ai-answers) - Related answer page
- [top cited domain tracker](https://trakkr.ai/trakkr-research/citation-sources/trackers/top-cited-domain-tracker) - Related tracker page

## Data And Sources

- [Where AI Gets Its Answers](https://trakkr.ai/trakkr-research/citation-sources) - Flagship study behind this page
- [Page JSON](https://trakkr.ai/data/research-answers/citation-sources/facts/the-current-index-tracks-more-than-seven-hundred-thousand-cited-urls.json) - Machine-readable companion file