Cloudflare is an anycast network and has many servers around the World, meaning the network/web traffic would go through the closest possible and fastest available Cloudflare Edge point (datacenter) to the website visitor (you) to serve the web content.
Regarding checking through which Cloudflare colocation you are connecting and being routed while visiting some website on the Cloudflare network, or your own, there is a simple way to check this.
Kindly, I would like you to double-check and reply here with the output results by opening your domain in your Web browser, therefore adding the /cdn-cgi/trace/ to the URL. The end URL should look like mydomain.com/cdn-cgi/trace/. Paste the output here in a reply.
The “colo=” parameter, which contains the three-letter, indicates one of the Cloudflare network edges through which you are being routed now regarding multiple facts.
The three letters are a name for the city, which could be checked by visiting the Cloudflare Status Page.
Furthermore, it might depend a bit which plan you’re using, Free or some higher paid plan, therefore the better routes/DCs might be selected and being prioritized for the delivery.
I believe Cloudflare is choosing it’s route based on a multiple different factors.
It could happen that our network traffic is being differently routed, but that could depend on the peering of our local ISP provider. More about it in the article from below: