Hi,
database sysmaster;
select tabname, dbinfo('dbspace', tn.partnum)
from systabnames tn, systabinfo ti
where ti.ti_partnum = tn.partnum
and tn.dbsname = "your_database_name"
and tn.tabname = "your_table_name"
order by tabname
would give you the dbspace name where your table resides.
Murat