Cloudflare redirection

Example: redirect from old.com to new.com, and www.old.com to www.new.com

Add redirect rule

• Go to Rules / Redirect Rules page
• Create a new rule
• Select Custom filter expression
• Add matching rules
  • Field Hostname, operator equals, value old.com, or
  • Field Hostname, operator equals, value www.old.com
• Add URL redirect rule
  • Type Dynamic, expression concat("https://www.new.com", http.request.uri.path), status code 301
• Check Preserve query string
• Click Deploy

Set up DNS

• Type A, name @, content 192.0.0.1, enable Proxy
• Type A, name www, content 192.0.0.1, enable Proxy

The key is to enable Cloudflare proxy. The actual address for the content field does not matter. Can also set up CNAME records with arbitrary content values.