umono.dev does not keep the IP address of anyone who makes a request to it.
There are no access logs. No log of the web server or of the registry server, error logs included, contains the IP address of a request.
There are no cookies.
Pages load nothing from other servers. Your browser makes no request to a third party because of umono.dev.
Who makes requests
An Umono site, when its owner activates a theme whose contract version the site has not seen before. The request is a plain GET of the contract. It carries no query parameters, no cookie, no site address, no installation ID and no Umono version. Its User-Agent is Umono.
The Umono CLI, when it fetches a contract into its cache on the developer's machine.
Editors, when they load a JSON Schema.
Why
The content is static and read-only. Watching for abuse or debugging does not need the address of whoever made a request.