If the link won't work for whatever reason, google "Virginia State Corporation Commission" and find the "clerk's information system." From there, you can access "entity information" to find the RA. You may have to do some looking around, because the SCC groups entities by entity type -- Corporations, LLC's, etc. I imagine Fannie Mae is a "corporation." Good luck!
Scott J. Golightly
Disclaimer: I am a VA attorney and only licensed in that state. This answer is general in nature and should not be relied on as legal advice. Nothing in this answer creates an attorney-client relationship.