How do I determine who the listing agent is?

[Holly Scott]

I get listings from a realtor I have worked with on my last flip. But I have no way of seeing who the listing agent is. Sometimes she is not able to get me info right away (I am not her only client:) and I would like to start making offers directly to the selling agent when necessary. How do I get this info? When I search the listing online I get many different realty sites but no way to tell who is the listing office

[Russell Brazil]

So these properties are brought to your attention by your agent, and you want to go around your agent and cut them out of the deal? Doesnt seem all that ethical to me.