Agent Grade / AI bots by site / fbcdn.net
Does fbcdn.net block ChatGPT?
fbcdn.net blocks Google too. ChatGPT search is blocked, and OpenAI's training bot is blocked. From its public robots.txt, checked 23 to 24 October 2026. It ranks #10 on the Tranco list of top sites.
| Bot | What it does | Home page | Deciding rule |
|---|---|---|---|
| Googlebot | Google Search | Blocked | User-agent: Googlebot / Disallow: / |
| Bingbot | Bing / Copilot | Blocked | User-agent: Bingbot / Disallow: / |
| OAI-SearchBot | ChatGPT search | Blocked (blanket rule) | User-agent: * / Disallow: / |
| ChatGPT-User | ChatGPT (user asks) | Blocked (blanket rule) | User-agent: * / Disallow: / |
| GPTBot | OpenAI training | Blocked | User-agent: GPTBot / Disallow: / |
| Claude-SearchBot | Claude search | Blocked (blanket rule) | User-agent: * / Disallow: / |
| Claude-User | Claude (user asks) | Blocked (blanket rule) | User-agent: * / Disallow: / |
| ClaudeBot | Anthropic training | Blocked | User-agent: ClaudeBot / Disallow: / |
| PerplexityBot | Perplexity search | Blocked | User-agent: PerplexityBot / Disallow: / |
| Perplexity-User | Perplexity (user asks) | Blocked (blanket rule) | User-agent: * / Disallow: / |
| Google-Extended | Gemini training | Blocked | User-agent: Google-Extended / Disallow: / |
| Applebot-Extended | Apple AI training | Blocked | User-agent: Applebot-Extended / Disallow: / |
| CCBot | Common Crawl | Blocked (blanket rule) | User-agent: * / Disallow: / |
| meta-externalagent | Meta AI | Blocked (blanket rule) | User-agent: * / Disallow: / |
| Bytespider | ByteDance | Blocked (blanket rule) | User-agent: * / Disallow: / |
"Blanket rule": fbcdn.net never names that bot; a rule for every bot (User-agent: *) applies. llms.txt: No. robots.txt is what a site asks bots to do; some sites also block bots at the network edge.
Questions
Does fbcdn.net block ChatGPT search?
Yes. fbcdn.net's robots.txt keeps OAI-SearchBot, the crawler behind ChatGPT search, off its home page (User-agent: * / Disallow: /), as checked 23 to 24 October 2026.
Does fbcdn.net block GPTBot?
Yes. fbcdn.net blocks GPTBot, OpenAI's training crawler (User-agent: GPTBot / Disallow: /).
Does fbcdn.net block Claude?
ClaudeBot (Anthropic training): blocked. Claude-SearchBot (Claude search): blocked. Claude-User (fetches for a person): blocked.
Does fbcdn.net have an llms.txt file?
We did not find an llms.txt file on fbcdn.net, or its robots.txt did not allow us to fetch it.
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