I usually find the RIC on this search page.

Tom

Is your query about how to determine what RIC to use to request specific data ?

If no: please give us more detail about what you are trying to achieve.

If yes:

If you have access to an Eikon application, you can open a quote windows (press the F4 key to open one). Then either:

• Enter the name of a company in the search box. As you type, suggestions (including the corresponding RIC) will appear.
• Use the speed guide: enter THOMSONREUTERS in the search box, and drill down by selecting the type of information you want (market, country, company ...).

If you don't have an Eikon application you can use the speed guide available under the Tools section here.