edge interface bits

[Petri Helenius]

Does anyone know, either on the east coast US, London, Stockholm,
Copenhagen, Amsterdam or Helsinki transit providers which would allow
edge/handoff interface control to different traffic classes using BGP 
communities?
(for example to announce DDoS destinations and/or sources with different 
community
which would drop the precedence of those packets to a lower level and 
thus de-prioritize
them and allow legitimate traffic to have better performance)

Pete