SQL> create table t (val number) 
  2  partition by range (val) 
  3  ( partition p1 values less than (10) tablespace ts_d01,
  4  partition p2 values less than (maxvalue) tablespace ts_i01 )
  5  /

Table created.

SQL> insert into t values (1);

1 row created.

SQL> insert into t values (11);

1 row created.

SQL> select val, tablespace_name       
  2  from t, dba_data_files
  3  where dbms_rowid.rowid_to_absolute_fno(t.rowid,user,'T') = file_id
  4  /
       VAL TABLESPACE_NAME
---------- ------------------------------
         1 TS_D01
        11 TS_I01

2 rows selected.