AI Crawler Atlas / domains
yaesu.com: AI crawler policy in robots.txt
robots.txt as fetched on 2026-10-10: yaesu.com disallows 7 of 22 AI and search crawlers from the site root: Google-Extended, Amazonbot, omgili, Claude-SearchBot, DuckAssistBot, Perplexity-User, Claude-User. That includes crawlers behind AI answers (Claude-SearchBot, DuckAssistBot, Perplexity-User, Claude-User).
The file refuses training crawlers and also some crawlers that power AI answers, so the site is likely to be missing from AI citations and the referral traffic that follows.
This reports what the file asks. It does not show whether a crawler can actually reach the site: many sites also block crawlers at their CDN or firewall, and some crawlers ignore robots.txt.
Training crawlers
Disallowing these keeps a site's content out of future model training. It does not remove what was already collected.
| Crawler | Operator | Status | How the file treats it |
|---|---|---|---|
| GPTBot | OpenAI | not disallowed | named in the file |
| ClaudeBot | Anthropic | not disallowed | named in the file |
| Google-Extended | disallowed | covered by the default rule | |
| CCBot | Common Crawl | not disallowed | named in the file |
| meta-externalagent | Meta | not disallowed | named in the file |
| Bytespider | ByteDance | not disallowed | named in the file |
| Applebot-Extended | Apple | not disallowed | named in the file |
| Amazonbot | Amazon | disallowed | named in the file |
| cohere-ai | Cohere | not disallowed | named in the file |
| Diffbot | Diffbot | not disallowed | named in the file |
| omgili | Webz.io | disallowed | covered by the default rule |
| Timpibot | Timpi | not disallowed | named in the file |
Search and citation crawlers
These feed AI answer engines that cite and link their sources. Disallowing them can take a site out of AI answers and out of the referral traffic that comes with them.
| Crawler | Operator | Status | How the file treats it |
|---|---|---|---|
| OAI-SearchBot | OpenAI | not disallowed | named in the file |
| PerplexityBot | Perplexity | not disallowed | named in the file |
| Claude-SearchBot | Anthropic | disallowed | covered by the default rule |
| DuckAssistBot | DuckDuckGo | disallowed | covered by the default rule |
User-action fetchers
These fetch a page live when a person asks an assistant about it. Disallowing them stops the assistant reading the page for that person.
| Crawler | Operator | Status | How the file treats it |
|---|---|---|---|
| ChatGPT-User | OpenAI | not disallowed | named in the file |
| Perplexity-User | Perplexity | disallowed | covered by the default rule |
| Claude-User | Anthropic | disallowed | covered by the default rule |
| meta-externalfetcher | Meta | not disallowed | named in the file |
Classic search crawlers
Classic search crawlers, shown as the baseline.
| Crawler | Operator | Status | How the file treats it |
|---|---|---|---|
| Googlebot | not disallowed | named in the file | |
| Bingbot | Microsoft | not disallowed | named in the file |
How yaesu.com compares
Among 33,383 readable sites in the Top 50,000, 13.9% disallow GPTBot, 11.8% ClaudeBot, 6.0% OAI-SearchBot and 8.6% PerplexityBot. Among 32,014 readable .com sites: 12.5% disallow GPTBot, 10.6% ClaudeBot.
History
First read 2026-10-10; the file has not changed since. Read the file itself.
The AI-related lines in the file
User-agent: Amazonbot User-agent: Googlebot User-agent: Googlebot-Image User-agent: Googlebot-Video User-agent: Googlebot-News User-agent: bingbot User-agent: GPTBot User-agent: ChatGPT-User User-agent: OAI-SearchBot User-agent: ClaudeBot User-agent: anthropic-ai User-agent: cohere-ai User-agent: PerplexityBot User-agent: YouBot User-agent: Diffbot User-agent: Omgilibot User-agent: Applebot-Extended User-agent: Meta-ExternalAgent User-agent: Meta-ExternalFetcher User-agent: Bytespider User-agent: PetalBot User-agent: AI2Bot User-agent: Timpibot User-agent: CCBot
Check it live. This page shows the file as read on 2026-10-10. Run a live check of yaesu.com and get told when it changes, or get the dataset for a segment.