how to find a tablespace for the table?

Hi team,
how to find a tablespace for the table?
See my comments below:
I have created a database with default tablespace like below:

edb=# CREATE DATABASE conndb WITH TABLESPACE = conn_s_tables;

After that I have created a table

CREATE TABLE COMPANY_new(
ID INT PRIMARY KEY NOT NULL,
NAME TEXT NOT NULL,
AGE INT NOT NULL,
ADDRESS CHAR(50),
SALARY REAL,
JOIN_DATE DATE
) ,

CREATE TABLE COMPANY_new(
ID INT PRIMARY KEY NOT NULL,
NAME TEXT NOT NULL,
AGE INT NOT NULL,
ADDRESS CHAR(50),
SALARY REAL,
JOIN_DATE DATE
)
tablespace conn_s_tables ;

But I am unable to search the tablespace name where tablespace exist , tablespace column is blank.

conndb=# select schemaname,tablename,tableowner,tablespace from pg_tables where tablename='company';
schemaname | tablename | tableowner | tablespace
------------+-----------+--------------+------------
conndb | company | enterprisedb |
(1 row)

conndb=# select schemaname,tablename,tableowner,tablespace from pg_tables where tablename='company_new';
schemaname | tablename | tableowner | tablespace
------------+-------------+--------------+------------
conndb | company_new | enterprisedb |