Use nodetool ring
and pay attention to the Owns column.
lyubent:bin lyubentodorov$ ./nodetool ring
Note: Ownership information does not include topology, please specify a keyspace.
Address DC Rack Status State Load Owns Token
127.0.0.1 datacenter1 rack1 Up Normal 9.1 KB 100.00% 38783122578811068034129545515711073918
On a side note, if you are starting out with C* you should target more up-to-date versions.