Subject: Why is my site coming from California?

Hi there,

Great question! Cloudflare uses a global Anycast network to serve content from the nearest data center to the client. Normally, a user in London should be routed to a London or nearby European Cloudflare edge server.

However, a few reasons why you might see a California IP:

• Your ISP's DNS resolver is routing you to a US POP due to its peering.
• Your site might not be cached yet at a local POP, so the request goes upstream.
• If you're testing from a VPN or proxy, that could affect routing.

To verify, I’d use the CF-Ray header on your response — the suffix of that ID tells us which Cloudflare POP served your request. You can also run a traceroute to your domain to see the path your traffic is taking.

Tools I’d use: cURL with -I, CF-Ray analysis, traceroute, Cloudflare Analytics

Let me know your site and I can help check where you’re really being routed from!