Cloudflare zero trust access URL (CDN-CGI) does not show my domain name as a subdomain

Cloudflare zero trust access URL does not show my domain name as a subdomain. It shows https://hafenx.cloudflareaccess.com. Where this hafenx comes from. I want ot change this word.

This is the “team domain” - you can change it in the Zero Trust dashboard (https://one.dash.cloudflare.com/), under Settings > General. There’s a little more info on the docs (https://developers.cloudflare.com/cloudflare-one/faq/teams-getting-started-faq/#whats-a-team-domain%2fteam-name) too.