How to check Oracle Table tablespace used

SELECT
OWNER, segment_name,segment_type,TABLESPACE_NAME, sum(bytes/1024/1024/1024) GB
 from dba_segments
 where SEGMENT_TYPE = 'TABLE'
 AND TABLESPACE_NAME = 'CLAIM_DATA'
 AND owner = 'CLAIM'
group by OWNER, segment_name,segment_type,TABLESPACE_NAME;