How CDN Configurations Can Block AI Crawlers Like GPTBot From Your Site

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Websites that rank well on Google may still be invisible to AI platforms like ChatGPT due to hidden CDN-level blocks that standard robots.txt checks won't reveal. Crawlers such as GPTBot, ClaudeBot, and PerplexityBot can be silently blocked by CDN rules that operate independently of a site's robots.txt file. A developer guide published on DEV Community on July 19 outlines how to test whether these AI bots can access your content. The process covers detecting hidden crawler blocks across multiple bots, including Bingbot, and is described as achievable in under five minutes. Making content accessible to AI crawlers is increasingly important as platforms like ChatGPT become significant sources of traffic and visibility.

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