StoreHippo hosting website lets you buy domains of your choice. To buy a domain from StoreHippo, you need to go to StoreHippo hosting store (hosting.storehippo.com). You can search and buy your desired domain here.
If you have already purchased your domain from another registrar then you can manage your domain on StoreHippo Admin Panel.
Please follow these steps to buy a domain on StoreHippo.