Official Sources.List file for Ubuntu Lunar ?
 

Hello,

Is there maybe a reliable official Sources.List file for Ubuntu Lunar ?
(US Server)

(Gnome desktop, libreoffice, Calligra... - standard packages).

Kind regards,
X.

I'm confused. The sources.list file created at time of install should be the "official" (that is, default) file, unless you have edited it in someway.

If you are asking about a list of mirrors, this article should help.