You can check the same by following the below steps:

1) Login to your Smartech panel
2) Click on Admin->Account Configuration

3) Click on Edit against Image Hosting Domain.

4) Enter the image hosting sub-domain in the text box. Please note the A record for the sub-domain should point to 202.162.244.9, i.e. the A record for img.yourdomainname should point to 202.162.244.9
Example:  Point the A record for the img.netcore.co.in to 202.162.244.9


5) Click on Save