Reposted - originally in the Newbie questions (sticky) thread so I doubt many posters read there - my apologies if this breaches forum etiquette!

Have searched elsewhere but no info, perhaps because the EK service to IAD is relatively new (started last month).

What lounge do EK use for C and F passengers at Washington Dulles airport, if any?

One of their own (unlikely - only one EK flight per day) or on contract from another airline?

And if there is a lounge, is it near the gate they usually use for EK 232?