Firefox Network ID

In the Mozilla forum for firefox it was described that a Network ID telemetry is required for DNS over Https. When about:networking#networkid is entered in the URL of firefox a large alpha numeric value is displayed.

I use cloudflare D.O.H. and do not see how this value is associated with DOH. Does anyone have an explanation?

Hello,

https://support.mozilla.org/en-US/kb/firefox-dns-over-https

https://support.mozilla.org/en-US/kb/dns-over-https-doh-faqs

I am looking on a confirmation that Firefox Network ID is required and if so all D.O.H. browsers must have this value.