The UNSPSC taxonomy lets publishers collect categories for Providers (Businesses) that reflect the Providers fields of service, expertise and activity. This is a checked taxonomy arranged like a tree with classes and subclasses. It can therefore be explored like one.
If you are not already on the Browse control click the Browse tab at the upper left corner of the console
In the left navigation panel expand the Usages node, then the Providers node and finally the UNSPSC v6.0501 node by clicking their expansion icons. This is the box with the cross inside.
With the UNSPSC v6.0501 usage categorization continue to expand categories into sub-categories until you find the one you are looking for. If the navigation pane seems too narrow slide it wider by clicking and dragging the textured tab on its right.
To view a list of all providers classifying themselves under a given category, click the category name and key value. This loads a Common view of the Browse Taxonomies list.