Anthropic

Anthropic documents fixed addresses for Claude API and Console traffic, and separate guidance for web crawlers (ClaudeBot and related). Crawler egress may use provider IPs not identical to the published API ranges.

Autonomous systems

Network background

Anthropic documents fixed API/Console ranges on their IP addresses page. Web crawlers may use other provider address space - use crawl policy docs and robots.txt for crawler control.

Claude API & Console IP addresses Official feed

Official sources

https://platform.claude.com/docs/en/api/ip-addresses

Web crawlers (ClaudeBot, Claude-User, Claude-SearchBot) Documentation

Official sources

Anthropic - web crawling & blocking
Anthropic Help - crawling FAQ