Which government and institutions
block AI crawlers?
Public bodies and international organisations. 100 domains measured; 9 block at least one of the 36 tracked AI crawlers.
9of 100 government and institutions block at least one AI crawler · median access 100%
The AI crawlers these sites block most
Amazonbot is blocked most often here, by 4 of 100 sites. What blocking each one means is in the AI crawler directory.
| User-agent | Operator | Purpose | Sites blocking |
|---|---|---|---|
Amazonbot | Amazon | model training | 4 of 100 |
Bytespider | ByteDance | model training | 4 of 100 |
CCBot | Common Crawl | training dataset | 4 of 100 |
Meta-ExternalFetcher | Meta | on-demand fetch | 3 of 100 |
PerplexityBot | Perplexity | search indexing | 3 of 100 |
PetalBot | Huawei | search indexing | 3 of 100 |
AI2Bot | Allen Institute for AI | model training | 2 of 100 |
Amzn-User | Amazon | on-demand fetch | 2 of 100 |
Every domain in this category
Sorted by the share of tracked AI crawlers permitted, lowest first. Each report shows all 36 verdicts and the robots.txt rule behind them.
Method and caveats are described on the full study page: one robots.txt fetch per domain, resolved against 36 published AI user-agents, reported as the voluntary policy it is.