Mbone question: the multicast addresses

Hello:

Sorry, I could not find an answer or a pointer through 

          http://www.ietf.org/meetings/multicast.html

My provider said that it supports mbone, but only enable it on demand
for specific addresses. Therefore, could anyone please inform me the 
multicast group addresses of the coming 47th IETF?

thanks,

-- 
- Rahmat M. Samik-Ibrahim --  VLSM-TJT --  http://rms46.vlsm.org/ -
2000:Year of the Information Snooper Highway - CathyGuisewite 25Feb