Use ad distribution to select where you want your ads to show. You can choose to have your ads shown on the entire Microsoft Advertising Network or subsets of it.
Within the search network, you have several ad distribution options depending on where you're advertising. You can choose to have your ads shown on the following:
Ads on the search network may also be displayed in the Bing Smart Search results.
When you run the Publisher Performance report, you'll see websites based on these ad distribution rules. To learn how ad language and location targeting affects who sees your ads, see How does ad language and location targeting affect who can see my ads?
Although you set ad distribution when you create a new campaign, it is an ad group level setting. Here's how to adjust your ad distribution settings:
To see how to exclude websites that aren't giving you the results you want, see How to prevent your ads from showing to certain people.