Half a Million Sites Block AI Crawlers: How to Check Your Training Data Status

VeryWellVersed · x · 2026-08-03

Common Crawl released a manual to help sites stay visible to AI, but over half a million sites currently block its crawler. Many site owners may be unaware of their status due to default blocking by services like Cloudflare.

The author developed a free tool that reads Common Crawl archives and checks if a website is included in AI training data within 15 seconds.

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