[6bone] What AS to use in BGP

[Michal Ludvig]

Hi all,
we're running a public WiFi network in Prague (Czech Republic) that serves 
(for now) several hundreds of people and is still growing. Now all our 
nodes use IPv4 10.0.0.0/8 network and we are doing NAT on the border 
router. Currently we're doing some experiments with IPv6 with prefix 
allocated from a tunnelbroker. However we'd like to become pTLA sometime 
in the future. I have read the requirements for becoming pTLA and I 
believe we could meet all of them, but I've found one thing that isn't 
clear to me: for BGP4+ peering I need an AS number. What should I use for 
it or how to get an official one? 

Thanks
Michal Ludvig