Source CIDR

Perplexity

Perplexity publishes IP prefix lists for PerplexityBot and Perplexity-User on perplexity.com - those feeds are authoritative for allowlisting.

Documentation

OpenAI GPTBot, SearchBot, and ChatGPT-User feed split. Anthropic Claude API ranges and crawler policy context. GoogleBot Crawler and user-triggered Google JSON feeds. Common Crawl CCBot feed for open web crawl traffic.