On the ads list of a campaign, you can see the spaces that are associated to each ad.

The complete name of each space is specified: Site - Zone - (Subzone) - Space.

If the ad is associated to more than 1 space, the names will appear separated by a semicolon (;).

If the ad is associated to more than 25 spaces, the first 25 names will be listed followed by ellipsis (...), in order to indicate that there are more associated spaces.

If you do not wish to see this or other column on the list, you can use the icon at the end of the table to unmark the necessary column(s):