Weekly report · 2009-W51
The state of AI crawling
Measured on 30,142 reachable domains for the week ending 2009-12-20. Every figure is the result of an automated audit run the same way on every domain: read robots.txt, resolve the rules for 48 tracked agents, then send live requests as four of them.
30,142
domains measured
7%
block an answer engine
19%
refuse AI agents at the edge
14%
publish an llms.txt
Block rate by crawler with change on the previous week
| Crawler | Operator | Content used for | Block rate | Sites | Week on week |
|---|---|---|---|---|---|
| GPTBot | OpenAI | training | 7.1% | 2,128 of 30,138 | new |
| CCBot | Common Crawl Foundation | archive | 6.8% | 2,056 of 30,138 | new |
| Bytespider | ByteDance | training | 6.4% | 1,934 of 30,138 | new |
| ClaudeBot | Anthropic | training | 5.8% | 1,735 of 30,138 | new |
| Meta-ExternalAgent | Meta | training | 4.7% | 1,411 of 30,138 | new |
| Amazonbot | Amazon | training | 4.6% | 1,395 of 30,138 | new |
| Google-Extended | training | 4.6% | 1,377 of 30,138 | new | |
| Applebot-Extended | Apple | training | 4.5% | 1,364 of 30,138 | new |
| anthropic-ai | Anthropic | training | 4.3% | 1,310 of 30,138 | new |
| omgilibot | Webz.io | training | 4.2% | 1,274 of 30,138 | new |
| cohere-ai | Cohere | live retrieval | 4.0% | 1,214 of 30,138 | new |
| Diffbot | Diffbot | training | 4.0% | 1,205 of 30,138 | new |
| omgili | Webz.io | training | 3.8% | 1,159 of 30,138 | new |
| SemrushBot-OCOB | Semrush | training | 3.7% | 1,116 of 30,138 | new |
| ChatGPT-User | OpenAI | live retrieval | 3.5% | 1,044 of 30,138 | new |
| PerplexityBot | Perplexity | answer index | 3.5% | 1,043 of 30,138 | new |
| FacebookBot | Meta | training | 3.2% | 967 of 30,138 | new |
| YouBot | You.com | answer index | 2.9% | 882 of 30,138 | new |
| ImagesiftBot | ImageSift (Hive) | training | 2.8% | 847 of 30,138 | new |
| Timpibot | Timpi | training | 2.7% | 823 of 30,138 | new |
| Scrapy | Zyte (open-source framework) | training | 2.5% | 740 of 30,138 | new |
| AI2Bot | Allen Institute for AI | training | 2.3% | 694 of 30,138 | new |
| OAI-SearchBot | OpenAI | answer index | 2.1% | 640 of 30,138 | new |
| cohere-training-data-crawler | Cohere | training | 2.0% | 610 of 30,138 | new |
| Meta-ExternalFetcher | Meta | live retrieval | 1.8% | 551 of 30,138 | new |
| DuckAssistBot | DuckDuckGo | live retrieval | 1.7% | 510 of 30,138 | new |
| PanguBot | Huawei | training | 1.7% | 509 of 30,138 | new |
| Claude-User | Anthropic | live retrieval | 1.6% | 487 of 30,138 | new |
| Claude-SearchBot | Anthropic | answer index | 1.6% | 469 of 30,138 | new |
| Kangaroo Bot | Kangaroo LLM | training | 1.5% | 460 of 30,138 | new |
| Perplexity-User | Perplexity | live retrieval | 1.5% | 458 of 30,138 | new |
| MistralAI-User | Mistral AI | live retrieval | 1.4% | 437 of 30,138 | new |
| Google-CloudVertexBot | live retrieval | 1.4% | 413 of 30,138 | new | |
| GoogleOther | training | 1.2% | 375 of 30,138 | new | |
| Meta-WebIndexer | Meta | answer index | 1.2% | 357 of 30,138 | new |
| Applebot | Apple | answer index | 1.1% | 335 of 30,138 | new |
| TikTokSpider | ByteDance | live retrieval | 0.8% | 251 of 30,138 | new |
| Amzn-SearchBot | Amazon | answer index | 0.7% | 226 of 30,138 | new |
| Amzn-User | Amazon | live retrieval | 0.5% | 160 of 30,138 | new |
| MistralAI-Training | Mistral AI | training | 0.4% | 134 of 30,138 | new |
| MistralAI-Index | Mistral AI | answer index | 0.2% | 75 of 30,138 | new |
| facebookexternalhit | Meta | live retrieval | 0.2% | 52 of 30,138 | new |
| Bingbot | Microsoft | answer index | 0.1% | 38 of 30,138 | new |
| Googlebot-News | answer index | 0.1% | 37 of 30,138 | new | |
| Meta-ExternalAds | Meta | training | 0.1% | 22 of 30,138 | new |
| msnbot | Microsoft | answer index | 0.1% | 21 of 30,138 | new |
| Googlebot | answer index | 0.1% | 18 of 30,138 | new | |
| OAI-AdsBot | OpenAI | live retrieval | 0.0% | 10 of 30,138 | new |
Trend share of measured sites
Where the blocking is share blocking an answer engine, by top-level domain
Only TLDs with at least 40 measured domains are shown, and each bar carries its sample size. A TLD is a weak proxy for jurisdiction. Full segmentation.
Changes recorded this week 0 total
No crawler policy changes were recorded in this week.
Cite this CC BY 4.0
The figures on this page are frozen to the week shown and will not be edited after publication. Corrections are appended, not overwritten.
Crawl Census, "The state of AI crawling, 2009-W51", 2009-12-20. https://crawlcensus.com/report/2009-W51Machine-readable: census totals, full corpus, crawler registry. Method: methodology.